The Leadership Quarterly 21 (2010) 308–323 Contents lists available at ScienceDirect The Leadership Quarterly j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / l e a q u a Exploring the link between integrated leadership and public sector performance Sergio Fernandez a,⁎, Yoon Jik Cho b, James L. Perry a a b Indiana University, Bloomington, United States Georgia State University, United States a r t i c l e i n f o Keywords: Public sector leadership Integrated leadership Shared leadership Performance a b s t r a c t This study develops the concept of integrated leadership in the public sector. Integrated leadership is conceived as the combination of five leadership roles that are performed collectively by employees and managers at different levels of the hierarchy. The leadership roles are task-, relations-, change-, diversity-, and integrity-oriented leadership. Using data from the Federal Human Capital Survey and Program Assessment Rating Tool, we analyze the relationship between integrated leadership and federal program performance. The findings from the empirical analysis indicate that integrated leadership has a positive and sizeable effect on the performance of federal sub-agencies. The study concludes with a discussion of the implications of the findings and limitations of the study. © 2010 Elsevier Inc. All rights reserved. For nearly a century, scholars have labored to understand leadership and its influence on subordinates and organizations. Despite the proliferation of leadership theories and empirical studies, scholars continue to lament our weak understanding of leadership effectiveness (Bass, 1990; Van Wart, 2005; Yukl, 2002). The need for rigorous empirical research on leadership is particularly acute in public administration, where little research on the topic is reported in the journals (Van Wart, 2003; notable exceptions include Fernandez, 2005, 2008; Moynihan & Ingraham, 2004; Trottier, Van Wart, & Wang, 2008). The dearth of research is more startling given the investments public organizations make in leadership development and the emphasis placed on performance management and improvement, including the federal Government Performance and Results Act (GPRA) and the Program Assessment Rating Tool (PART). Throughout most of its history, the study of leadership has been characterized by disparate clusters of theories, approaches and models, each focusing on different pieces of the leadership puzzle, with few efforts at synthesis and integration. More recently, however, leadership scholars have begun to develop and test integrated leadership models that synthesize existing knowledge regarding leadership effectiveness (e.g., Fernandez, 2005; Hunt, 1991; Van Wart, 2005; Yukl, 2002). These models incorporate leadership skills, traits, behaviors and styles along with situational and moderating variables in unified theoretical models to explain leadership effectiveness. The recent emergence of shared leadership theory represents another effort by leadership scholars to seek integration, but one of a different kind. Challenging the traditional paradigm in leadership theory that favors top-down influence and views leadership as a role performed by an individual, these scholars have argued for the need to treat leadership as a shared endeavor broadly distributed among members of organizations, networks or communities (Crosby & Bryson, 2005; Ensley, Hmieleski, & Pearce, 2006; Hiller, Day, & Vance, 2006; Meindl, 1990; Pearce & Conger, 2003; Pearce & Sims, 2000, 2002). As Fletcher and Kaüfer (2003) explain, “New models conceptualize leadership as a more relational process, a shared or distributed phenomenon occurring at different levels and dependent on social interactions and networks of influence” (p. 21). ⁎ Corresponding author. Tel.: +1 812 325 0981; fax: +1 812 855 7802. E-mail address: [email protected] (S. Fernandez). 1048-9843/$ – see front matter © 2010 Elsevier Inc. All rights reserved. doi:10.1016/j.leaqua.2010.01.009 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 309 This study makes two contributions to the emerging research on integrated and shared leadership. First, the concept of integrated leadership in the public sector is developed inductively from the leadership, generic management and public administration literatures. Integrated leadership in the public sector, as conceived in this study, involves the integration of five leadership roles performed collectively by team leaders, supervisors, managers, and senior executives in public organizations. Second, the relationship between integrated leadership and performance in the public sector is explored by capitalizing on two recent initiatives in the U.S. federal government—the Federal Human Capital Surveys and the Program Assessment Rating Tool, or PART, scores—to understand and improve the management and performance of federal agencies. The findings from the empirical analysis indicate that integrated leadership has a positive and sizeable effect on the performance of federal agencies. The study concludes with a discussion of the implications of the findings and limitations of the study. 1. Management and leadership Much has been written about the distinction between management and leadership. Mintzberg's (1972) well-known classification of managerial roles lists “leading” employees as one of only ten roles played by managers. Bennis and Nanus (1985) stated, “Managers are people who do things right and leaders are people who do the right thing” (p. 21). Writing in a similar vein, Kotter (1982) asserted that management is about coping with complexity, particularly by setting goals and plans, organizing and staffing, and solving problems and monitoring results, while leadership involves coping with organizational change by developing a vision and strategy for change, communicating the vision, and motivating employees to attain it. Notwithstanding these conceptual distinctions, we often find in practice that the distinction between management and leadership becomes blurred. Not all managers are leaders, but many of them are. Mintzberg's other managerial roles such as the spokesperson and entrepreneur are often played by leaders performing the boundary spanning role. Additionally, the Ohio State University and University of Michigan leadership studies indicated that leadership in part entails the task-oriented behavior ascribed to managers by Kotter. The distinction between leadership and management is blurred even further when we examine and compare the leadership and management literatures. Much like the former, the latter focuses on how the behavior and strategies of top managers and leaders enable employees to achieve goals at the individual, group, and/or organizational level (see Boyne, 2003). Meier and O'Toole (2001, 2002), for example, found that managerial quality and networking efforts of public school superintendents improved performance. Recent research on managerial strategy in the public sector (e.g., Andrews, Boyne, & Walker, 2006; Meier et al., 2007) has found that aggressive strategies aimed at exploiting opportunities in the external environment can be as effective as change-oriented leadership behavior when it comes to improving organizational effectiveness (Ekvall & Arvonen, 1991; Fernandez, 2008). Various other aspects of management that have been linked to organizational effectiveness in the public sector— including goal setting, motivating employees, and shaping organizational culture (see Brewer & Selden, 2000; Rainey & Steinbauer, 1999)—also have their counterparts in leadership behavior research (see Bass, 1990). In short, the distinction between management and leadership remains a conceptual knot that is difficult to untangle. 2. Trends in leadership research Several trends in the evolution of leadership research are discussed as a way to illuminate key ideas shaping our analysis of integrated leadership in the public sector. The three trends are simultaneous growth and balkanization of leadership research; efforts to integrate independent strands of leadership theory; and re-conceptualizing leadership as a shared or collective process. 2.1. Growth and balkanization The earliest attempt to systematically study leadership focused on the search for personal attributes and traits of successful leaders (see Boyatzis, 1982; McClelland, 1965, 1985; Stogdill, 1948). Failure to identify a common set of attributes and traits linked to leadership effectiveness led researchers at Ohio State University (Fleishman, 1953; Halpin & Winer, 1957; Hemphill & Coons, 1957) and the University of Michigan (Katz, Macoby, & Morse, 1950; Katz & Katz, 1960) during the 1950s and 1960s to shift the focus of research from leadership traits to the behavior of effective leaders. These efforts resulted in the identification of two broad categories of leadership behavior: task-oriented and relations-oriented behavior. Numerous empirical studies produced weak and inconsistent findings (Bass, 1990; Fisher & Edwards, 1988; Yukl, 2002), the most consistent ones being that relations-oriented and task-oriented behavior are positively correlated with job satisfaction and performance, respectively. Leadership research branched off in many directions during the latter part of the twentieth century. Among the most prominent approaches emerging during that period were contingency theories of leadership, dyadic theories of leadership, and charismatic and transformational leadership. Various situational and contingency theories were developed to explain how situational variables moderate the influence of leadership attributes and behavior on performance. These contingency theories, which have often received mixed or weak empirical support (Bass, 1990; Yukl, 2002), include Fiedler's (1967) least preferred coworker (LPC) contingency model; the path–goal theory of leadership (House, 1971); cognitive resources theory (Fiedler, 1986; Fiedler & Garcia, 1987); the multiple linkage model (Yukl, 1989); leadership substitute theory (Kerr & Jermier, 1978), and Hersey and Blanchard's situational leadership theory (Hersey, Blanchard, & Johnson, 2000). Dyadic theories of leadership, including leader–member exchange (LMX) theory, have focused on the vertical relationship that develops between a leader and a follower (Dansereau, Graen, & Haga, 1975; Graen & Cashman, 1975; Graen & Scandura, 1987; Gerstner & Day, 1997; Schriesheim, Castro, & Cogliser, 1999). Researchers have found that high-exchange relationships 310 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 characterized by high levels of mutual trust and reciprocity between superior and subordinate are related to higher levels of support for the leader, enhanced mutual communication, and higher subordinate commitment and performance (Gerstner & Day, 1997; Schriesheim et al., 1999). Scholars focusing on charismatic and transformational leadership have explored the use of charisma, emotional appeals, and symbols and culture by leaders to motivate their followers (Bass, 1985; Bass & Avolio, 1990; Bennis & Nanus, 1985; Burns, 1978; House, 1977; Shamir, House, & Arthur, 1993). Influenced by Weber's original work on charismatic leaders transformational leadership research has produced promising empirical findings, although progress has been slowed by difficulty establishing causal relationships and lack of clarity about its impact in different situations (Bryman, 1993; Yukl, 1999). 2.2. Integrated leadership theories Advancements in leadership research have been hindered by balkanization into the clusters of theories discussed above and, until recently, scholars made few attempts to integrate the theories. During the last decade, however, scholars have begun to develop and test leadership models and frameworks that integrate elements from earlier approaches. Van Wart (2003) asserted that to advance understanding of public sector leadership, scholars should begin to develop and test comprehensive leadership models that integrate transactional and transformational elements and that account for various situational variables inherent in the public context (p. 225). In his leadership action cycle model, leadership is treated as a linear chain of causally-related factors, with the choice of optimal leadership style contingent on various internal and external organizational conditions (Van Wart, 2005). In addition, the effect of a particular leadership style on performance is moderated by the personal attributes and skills of a leader. Yukl's (2002) integrative leadership framework incorporates leadership skills, traits, behaviors and styles, and situational variables in a single theoretical model to explain the effectiveness of a leader (see also Fernandez, 2005; Hunt, 1991). Doig and Hargrove (1990) assert that a public sector leader's skills, abilities, personality, and style interact with situational variables to determine success. Specifically, skills and abilities have to match the task at hand and must be complemented by favorable conditions (i.e., favorable public opinion, political support and public demand). Similarly, Ricucci (1995) found that political, managerial and leadership skills, experience, technical expertise, managerial style and personality all contribute to leadership effectiveness; however, to be most effective, leaders have to receive strong political support and ample resources, in addition to being assigned to tasks that match their skills and abilities (see also Svara, 1994). Many of the works just mentioned are important contributions to our understanding of public sector leadership, inasmuch as they represent the first serious efforts by scholars to integrate elements of different leadership theories and approaches into a single theoretical framework. Most of the empirical tests of these integrated models have been limited, however, by small sample sizes and concerns about their generalizability (Fernandez, 2005). There remains the need for additional theoretical development and empirical validation of integrated leadership models in the public sector. 2.3. Shared leadership The emergence of the concept variously labeled shared, distributed, or dispersed leadership represents another approach by which leadership scholars have sought integration (Crosby & Bryson, 2005; Ensley et al., 2006; Ensley, Pearson, & Pearce, 2003; Gronn, 2002; Hiller et al., 2006; O'Toole, Galbraith, & Lawler, 2002; Pearce & Conger, 2003; Pearce & Sims, 2000, 2002; Seers, Keller, & Wilkerson, 2003). Rather than integrating variables or disparate strands of leadership theory, these scholars propose a more radical change to the unit of analysis in leadership research (Gronn, 2002). They propose re-conceptualizing leadership as a role performed by various organizational members operating at multiple levels of the hierarchy. Fletcher and Kaüfer (2003) argue that in contrast to the traditional individual-level perspective on leadership, “shared leadership offers a concept of leadership practice as a group-level phenomenon” (p. 22). They include among the key characteristics of new models of shared leadership a set of practices “enacted” by people at all levels of the organization; an emphasis on leadership as a social process that is dynamic, collective, and multidirectional; and a focus on relational interactions that promote mutual learning. Pearce and Conger (2003) conceive shared leadership as “broadly distributed among a set of individuals instead of centralized in the hands of a single individual who acts in the role of a superior” (p. 1). They note that while leadership scholars flirted with the notion of shared leadership and laid the theoretical foundation for it over the course of several decades, it was not until the late 1990s that the concept of shared leadership came to be viewed as a legitimate approach to understanding leadership and its consequences for organizations. Studies point to shared leadership in teams as having a positive influence on team performance (Carson, Tesluk, & Marrone, 2007; Ensley et al., 2003). Ensley et al. (2006) and Pearce and Sims (2002) compared vertical with shared leadership in top-management teams and found both approaches to be effective, although the effect of shared leadership outweighed that of vertical leadership. Shared leadership also appears to be an important antecedent of group cohesion and collective vision (Ensley et al., 2003). 3. Integrated leadership in the public sector From the leadership and public administration literatures, we develop the concept of integrated leadership, which incorporates five leadership roles essential for the success of leaders in the public sector: task-oriented leadership; relations-oriented leadership; change-oriented leadership; diversity-oriented leadership; and integrity-oriented leadership. The selection of the first three leadership roles is influenced by the Ohio State University and University of Michigan leadership studies, Yukl, Gordon, and Taber's (2002) integrated framework, and by the work of Ekvall and Arvonen (1991) and Lindell and Rosenqvist (1992a,b), who S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 311 expanded upon the Ohio State leadership studies by identifying a third category of effective leadership behavior—development- or change-oriented behavior. The other two roles are derived from contemporary public management research that attests to their importance as theoretical constructs and as patterns of behavior associated with effective leadership. In addition to integrating across streams of leadership theory, our integrated approach conceives the unit of analysis as the collective efforts and behaviors of public managers operating at multiple levels of the organization and in positions granting some degree of formal authority over subordinates. Specifically, the five roles are shared by team leaders, supervisors, managers, and senior executives in federal agencies; they are not consolidated in the hands of a single person at the top of the hierarchy. Task-oriented leadership involves the kinds of leadership behavior that express a concern for accomplishing the goals of the group and that are aimed at defining and organizing the group's activities. Task-oriented behaviors include setting and communicating goals and performance standards; planning, directing and coordinating the activities of subordinates; maintaining clear channels of communication; monitoring compliance with procedures and goal achievement; and providing feedback. As one expert explains, “Successful task-oriented leaders are instrumental in contributing to their groups' effectiveness by setting goals, allocating labor, and enforcing sanctions. They initiate structure for their followers, define the roles of others, explain what to do and why, establish well-defined patterns of organization and channels of communication, and determine the ways to accomplish assignments” (Bass, 1990, p. 472). Relations-oriented leadership involves leadership behavior that reflects concern for the welfare of subordinates and a desire to foster good interpersonal relations among organizational members. Among the many relations-oriented behaviors identified by leadership researchers are treating subordinates as equals, showing concern for their well-being, appreciating and recognizing their work, providing them with opportunities for personal growth, and involving them in the decision-making process. Relationsoriented behavior overlaps with participative leadership to the extent that both aim to give subordinates influence over important decisions made in the organization (Likert, 1967; Vroom & Yetton, 1973). Participative leadership, however, appears to be only one component—namely, the employee empowerment component—of a broader set of relations-oriented behaviors aimed at promoting the well-being of workers. Relations-oriented behavior fosters a harmonious and emotionally supportive work environment that contributes to higher levels of employee job satisfaction and motivation, two variables that have been linked to higher performance. Relations-oriented leadership also contributes to performance by creating open channels of communication, increasing personal responsibility among subordinates, and contributing to subordinate commitment to the leader and the organization. The third leadership role, change-oriented leadership, represents leadership behavior that “is primarily concerned with improving strategic decisions; adapting to change in the environment; increasing flexibility and innovation; making major changes in processes, products, or services; and gaining commitment to the changes” (Yukl, 2002, p. 65). The literature suggests that change-oriented behavior affects organizational performance in at least three fundamental ways. Leaders who engage in change-oriented behavior can increase performance by making their organizations more adaptive and responsive to the external environment (Ekvall & Arvonen, 1991). Change-oriented leaders may be more effective at identifying the most promising strategic initiatives for their organizations. Finally, change-oriented behavior can encourage employees to search for creative solutions to problems facing the organization. Change-oriented leadership appears to have much in common with transformational leadership (Bass, 1985; Bass & Avolio, 1990), both with their emphasis on fostering change in the lives of employees and their organizations. They seem to depart to some degree, however, in the extent to which they rely on instrumental means for achieving change, with transformational leadership placing greater emphasis on emotional appeals and manipulation of symbols and culture to motivate subordinates and less emphasis on extrinsic rewards. In the public sector, managing organizational change has become a critical contingency (Fernandez & Rainey, 2006; Light, 1998). Public managers have come under increasing pressure to find more efficient and effective methods of delivering services and implementing managerial reforms adopted by elected officials. Ekvall and Arvonen (1991) found that changeoriented leadership was positively correlated with the leader's level of competence or effectiveness (see also Lindell & Rosenqvist, 1992a,b). This type of leadership behavior has also been linked to improved performance in public organizations (Fernandez, 2008). Diversity-oriented leadership is the fourth role that makes up integrated leadership. As research about the diversityperformance linkage suggests, the relationships between diversity and performance are complex and cannot be conceived simply as “diversity equals better performance” (Richard, Barnett, Dwyer, & Chadwick, 2004). Diversity-performance research, which is focused primarily on business settings, has been hard pressed to identify positive relationships, particularly related to racial and demographic diversity (Horwitz & Horwitz, 2007; Kochan et al., 2003; Webber & Donahue, 2001). In one of the few public sector studies, Pitts (2005) found significant but inconsistent relationships for managers and teachers between diversity and representation across different performance indicators in Texas public schools. Despite the dearth of public sector research, leaders in public settings who appreciate and understand diversity are likely to reap several advantages from it. One way in which leadership sensitive to diversity can generate performance benefits is by increasing the quality of decisions. Organizations and groups that can tap diverse workforces and constituencies are likely to reap dividends in terms of ideas generated, quality of the assessment of options, and decision acceptance. McLeod, Lobel, and Cox (1996) found in a controlled experimental brainstorming study, for instance, that the ideas produced by ethnically diverse groups were judged to be of higher quality than the ideas produced by homogeneous groups. Integrative leaders who are attentive to diversity also create potential for enhancing value for the organization through the human capital represented by the skills, experience and knowledge of diverse stakeholders (Barney & Wright, 1998). The centrality of diversity in Richard Florida's (2002) analysis of competitive advantages of communities reflects the logic of the value creation dimension of diversity. 312 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 The final leadership role is integrity-oriented leadership. The institutionalized and politicized environments in which public managers operate impose strong demands for legality, fairness, and equitable treatment of employees and service recipients (Rainey, 2003). The U.S. Office of Personnel Management (OPM) has identified integrity as one of the five fundamental competencies prerequisite for entry to the Senior Executive Service (SES) (OPM, 2006). Federal managers also identified integrity as the most important competence among the 26 specific competences required for the SES (National Academy of Public Administration, 2003). Research on organizational justice provides theoretical support for the positive effect of integrity on performance. Since Adams' (1965) equity theory, many scholars have emphasized the importance of fairness within organizations as a factor enhancing employee motivation. A meta-analysis reveals that fair practices within organizations determine the quality of individuals' life within organizations as well as organizational performance (Colquitt, Conlon, Wesson, Porter, & Ng, 2001). There has been virtually no research, however, on the effect of integrity-oriented leadership on performance in the public sector. 4. Methodology This study tests the hypothesis that integrated leadership has a positive effect on organizational performance in the public sector. Below are descriptions of the variables, data and methods used to test this hypothesis. The unit of analysis is the U.S. federal sub-agency. 4.1. Dependent variable The dependent variable, PART results, is the federal sub-agency's Program Assessment Rating Tool (PART) score on the “Results” component of the overall PART score for 2006–2007.1 PART was established by the Bush Administration in 2002, with responsibility for its implementation assigned to the U.S. Office of Management and Budget (OMB). OMB assigns PART scores at the program level, a different unit of analysis than the federal sub-agency.2 In any given year, multiple programs within a single sub-agency may be evaluated and rated by OMB. This required us to develop a methodology for aggregating program PART results scores to calculate a sub-agency's score. Because programs vary greatly in terms of their budgets and social impact, simply averaging the scores of the programs belonging to a sub-agency to derive its PART results score does not seem fitting. Instead, for each sub-agency, we weighed its various programs' PART scores by the corresponding program budget and then summed the weighted program scores to come up with the sub-agency score. Although some scholars have raised concerns about whether PART scores are sufficiently accurate, consistent, and objective (Radin, 2006), this measure of organizational performance offers several advantages to researchers. First, PART scores can be used to compare performance across the entire range of federal agencies. Second, as external measures of performance based at least in part on observable behavior and information gathered from archival data, PART scores should be less subjective than perceptual measures based on survey responses from internal participants. Even external and “objective” measures of performance like these, however, introduce some degree of subjectivity and should be interpreted with care (see Walker & Boyne, 2006). Finally, the use of PART scores helps minimize common source bias, since the independent variable is measured using a different source of data. 4.2. Independent variable The independent variable is integrated leadership. To construct a measure of this construct, survey items from the 2006 Federal Human Capital Survey (FHCS) were used that asked employees and managers to report on the behavior of and attitudes towards superiors at multiple levels of the organizational hierarchy, including low level supervisors and team leaders, managers, and senior executives. These survey items represent organizational members' perceptions of leadership distributed across their organizations without reference to a solo or focused leader (Gronn, 2002). Multiple ordinal survey items were used to measure the five leadership roles described above as making up the construct of integrated leadership (see Appendix A). A higher-order confirmatory factor analysis (CFA) was performed to assess the discriminant and convergent validity of this five-dimensional definition of integrated leadership. As seen in Fig. 1, each of the survey items loaded strongly and in the anticipated direction on the corresponding factor (i.e., leadership role) (p < 0.001). Those five factors, in turn, have strong positive correlations with a higher-order factor representing the underlying construct of integrated leadership (p < 0.001). These results suggest that there are five distinct dimensions to integrated leadership, thus demonstrating discriminant validity.3 Additionally, the strong correlations between each of the five dimensions and the higherorder factor offer evidence of convergent validity. 1 The overall PART score for a federal program is made up of four weighted components: “Program Purpose and Design” (20%); “Planning” (10%); “Management” (20%); and “Results” (50%) (OMB, 2007). OMB officials evaluate each component of the PART and assign a rating ranging from 0 to 100. Only the “Results” component of PART is used in this study since it directly pertains to performance, while the other components capture aspects of management or leadership, the main predictor in the multivariate analysis. 2 The term sub-agency refers to two kinds of organizations: a bureau, embedded in a cabinet-level department or large independent agency, or a smaller independent agency. 3 Scales to measure the five leadership roles were created from the five groupings of survey items shown in Appendix A. The Cronbach's alphas for these scales range from 0.76 (change-oriented leadership) to 0.86 (task- and relations-oriented leadership), indicating moderate to strong levels of internal reliability. S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 313 Fig. 1. Higher-order confirmatory factor analysis. The statistics for several goodness-of-fit indices support a five-dimensional model of integrated leadership. The statistics for the comparative fit index (CFI), which is minimally affected by sample size, was 0.91, indicating a good fit for the five factor model (Fan, Thompson, & Wang, 1999). The normed fit index (NFI) statistic of 0.91 and the root mean square error of approximation (RMSEA) of 0.09 both point to an acceptable fit for the five-factor model (Schumacker & Lomax, 2004). Complex models are more likely to generate better fit statistics than parsimonious ones. It is recommended, therefore, that models be subjected to goodnessof-fit measures that penalize for lack of parsimony. The model with a five-dimensional structure has parsimony ratio (PRATIO) and parsimony normed fit index (PNFI) statistics of 0.71 and 0.66, both of which are indicative of a reasonably parsimonious fit.4 In contrast to this evidence favoring a five-dimensional model of integrated leadership, the CFA results reject a model with a one-factor structure (i.e., a one-dimensional model). The CFI and NFI statistics for a one-dimensional model fail to reach the 0.90 cutoff point; both are 0.85. And the RMSEA statistic (0.11) is above the conventional cutoff for an adequate model fit (Schumacker & Lomax, 2004). In addition, a comparison of the five-dimensional and one-dimensional models based on their Akaike information criterion (AIC) statistics favors the former over the latter. The AIC statistic for the five-dimensional model (211,170.558) is considerably lower than the AIC statistic for the one-factor model (422,210.921), indicating a significantly better model fit (Burnham & Anderson, 2004). Since the focus of the analysis is on the effect of integrated leadership on performance (and not on the effects of the separate leadership roles), a summated rating scale was created for each survey respondent based on all the survey items used to measure the leadership roles. The unweighted sub-agency average on this respondent-level scale serves as the measure of integrated leadership (Cronbach's alpha = 0.95). The scale was standardized to make interpretation of the results straightforward. 4.3. Control variables The analysis includes control variables for politicization, organizational complexity, and sub-agency type and budget. To control for the level of politicization in the sub-agency, the model includes the variable percentage of political appointees in a subagency.5 A more politicized environment can place conflicting demands on an organization's members, compelling them to perform effectively, but also remaining politically responsive to the President, Congress, and other political institutions. Trade-offs between effectiveness and political responsiveness in order to balance these competing expectations may result in lower performance (Moe, 1985). Lewis's (2008) recent analysis, based on the same sources of data used in this study, provides compelling evidence of the negative effect of politicization on federal agency performance. A common approach to measuring organizational complexity involves the amount of heterogeneity among occupational categories in organizations. To measure such heterogeneity, a Blau index used in research on ethnic diversity (Pitts, 2005) in 4 The chi square test results reject the five-factor model (p < 0.01). Large sample sizes like the one used in this CFA (n = 221,479) are much more likely to result in Type II errors. Garson (2009) suggests, therefore, discounting the chi square results if other fit statistics support the model. 5 Five types of political appointments were considered: permanent non-career senior executive service (SES); non-permanent non-career SES; non-permanent Schedule C; permanent executive; and non-permanent executive. Data on these different types of political appointments were gathered from OPM's FedScope database. 314 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 Table 1 Descriptive statistics. Variable Obs. Mean Std. Dev. Min Max PART results Integrated leadership Percent political appointees Organizational complexity Independent agency (coded 1) Budget 97 97 97 97 97 97 54.16 − 0.04 0.78 0.54 0.25 10,917 21.83 0.21 1.95 0.16 0.43 54,594 5.50 − 0.59 0 0.04 0 4 94.70 0.43 16.36 0.79 1 499,457 organizations was constructed using OPM data on the number of sub-agency employees in the following six categories: professional, administrative, technical, clerical, other white collar, and blue collar. Because six categories are used, the range of the index is from zero (perfect homogeneity) to 0.833 (same number of employees for all six categories). Higher values are indicative of greater organizational complexity. A dummy variable for whether the sub-agency is an independent agency versus a bureau in a cabinet agency (independent agency coded “1”) is also included in the model. Finally, the model controls for the amount of resources available to these agencies, measured as the sub-agency's budget in 2006, in millions of dollars. Financial, human, and informational resources are expected to have a positive effect on organizational performance (O'Toole & Meier, 1999; Rainey, 2003; Rainey & Steinbauer, 1999). The budget variable is, therefore, expected to be positively correlated with the dependent variable. 4.4. Data and statistical methods The primary sources of data were the Office of Personnel Management's 2006 Federal Human Capital Survey (FHCS) and Office of Management and Budget's (OMB) 2006 and 2007 PART results scores. The 2006 FHCS was administered to 390,657 federal employees in sixty major federal agencies, with 221,479 completing the survey (57% response rate). The construct of integrated leadership represents the sharing of the leadership role among organizational members working at all levels of the hierarchy. Theory compels us, therefore, to use data from all respondents to the 2006 FHCS, including—from lowest to highest on the hierarchy—non-supervisors, team leaders, supervisors, managers, and executives. Aggregating multiple informant surveys in this way raises questions regarding the representativeness and comparability of the data (Enticott, Boyne, & Walker, 2009). The methodology used by OPM to collect the 2006 FHCS should, however, assuage such concerns. OPM drew statistically valid samples for agencies and sub-agencies in order to generate results representative of both individual sub-agencies and the overall federal workforce. These samples were typically larger than 1500 employees,6 and they were stratified by the five hierarchical levels listed above. Supervisors, managers, and executives are somewhat over-represented due to the stratified sampling technique used. However, this should help to correct for the bias that often occurs from having a disproportionate share of lower level respondents to such surveys (see Enticott et al., 2009, p. 233). Sub-agency employment and budget data were obtained from OPM and OMB, respectively. Merging the different data sources results in a sample of 97 federal government sub-agencies. Ordinal least squares (OLS) regression is used to test the model. The descriptive statistics for all the variables are shown in Table 1. The dependent variable PART results has a roughly normal distribution, with a mean slightly above 54 and a standard deviation of about 22. Integrated leadership, measured using a standardized summated rating scale, exhibits an adequate amount of variance for undertaking the statistical analysis. The mean percent of political appointees was around 1%, a figure in line with the overall percent for the federal bureaucracy, although a handful of sub-agencies had around 10% or more political appointees in the workforce. Also noteworthy is that the sample of subagencies used in the study consists mostly of sub-agencies within cabinet-level departments; only 25% of the sub-agencies belong to independent federal agencies. 5. Results We begin by examining sub-agency scores on the integrated leadership and PART results variables (see Tables 2 and 3). The ordering of sub-agencies by their scores on the variable integrated leadership reveals some interesting patterns. Among the observations with higher leadership scores are a sizeable number of sub-agencies within the Department of Defense, Department of Justice, and the Environmental Protection Agency. All eight Department of Defense sub-agencies in the sample have scores above the median integrated leadership score, and three of the top fifteen leadership scores belong to Department of Justice subagencies. Five out of the six Environmental Protection Agency's sub-agencies in the sample are at or above the median integrated leadership score. Interestingly, the Internal Revenue Service and Social Security Administration, two agencies that have undergone significant organizational change in response to harsh public criticism, rank among the top ten sub-agencies in leadership. A concentration of sub-agencies within the Department of Homeland Security, Department of Agriculture, and Department of Health 6 Many of the smallest sub-agencies had all employees surveyed. S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 315 Table 2 Federal sub-agency rankings by standardized integrated leadership scores. Source: 2006 Federal Human Capital Survey, U.S. Office of Personnel Management. Sub-agency Cabinet department or independent agency Leadership U.S. Visit Office Internal Revenue Service Nuclear Regulatory Commission Social Security Administration Federal Highway Administration Executive Office U.S. Attorneys and U.S. Attorneys' Office Department of State National Science Foundation Public Buildings Service Millennium Challenge Corporation United States Secret Service Federal Trade Commission Civil Division National Oceanic And Atmospheric Administration Alcohol, Tobacco, Firearms, and Explosives U.S. Air Force Defense Contract Audit Agency Financial Management Service Corporation for National and Community Service United States Coast Guard Animal and Plant Health Inspection Service U.S. Army National Institutes of Health Natural Resources Conservation Service Federal Bureau of Investigations Agricultural Research Service Defense Commissary Agency U.S. Navy Army Corps of Engineers Office of the Secretary Environmental Protection Agency — Office of Water U.S. Marine Corps Bureau of the Census Federal Acquisition Service Securities and Exchange Commission National Credit Union Administration Occupational Safety and Health Administration Federal Aviation Administration National Aeronautical Space Administration — Headquarters Administration on Aging Defense Contract Management Agency Federal Housing Finance Board Environmental Protection Agency — Office for Prevention, Pesticides and Toxic Substances Employment Standards Administration Forest Service Pension Benefit Guaranty Corporation Environmental Protection Agency — Office of Research and Development Environmental Protection Agency — Region 3 Environmental Protection Agency — Office of Solid Waste and Emergency Response Office of Surface Mining, Reclamation and Enforcement Combined Research, Education, and Economic Services Departmental Offices Veterans Benefits Administration U.S. Geological Survey Office of Personnel Management Health Resources and Services Administration Bureau of Prisons/Federal Prison System Minerals Management Service U.S. Fish and Wildlife Service Railroad Retirement Board National Nuclear Security Administration Employment and Training Administration Headquarters and Field Executive Office for Immigration Review Food and Nutrition Service U.S. Marshals Service Environmental Protection Agency — Office of Air and Radiation Department of Homeland Security Department of Treasury Independent Agency Independent Agency Department of Transportation Department of Justice Department of State Independent Agency General Service Administration Independent Agency Department of Homeland Security Independent Agency Department of Justice Department of Commerce Department of Justice Department of Defense Department of Defense Department of Treasury Independent Agency Department of Homeland Security Department of Agriculture Department of Defense Department of Health and Human Services Department of Agriculture Department of Justice Department of Agriculture Department of Defense Department of Defense Independent Agency Department of Health and Human Services Independent Agency Department of Defense Department of Commerce General Service Administration Independent Agency Independent Agency Department of Labor Department of Transportation Independent Agency Department of Health and Human Services Department of Defense Independent Agency Independent Agency Department of Labor Department of Agriculture Independent Agency Independent Agency Independent Agency Independent Agency Department of Interior Department of Agriculture Department of Treasury Department of Veterans Affairs Department of Interior Independent Agency Department of Health and Human Services Department of Justice Department of Interior Department of Interior Independent Agency Department of Energy Department of Labor Department of Energy Department of Justice Department of Agriculture Department of Justice Independent Agency 0.43 0.35 0.31 0.30 0.29 0.28 0.27 0.26 0.26 0.24 0.23 0.20 0.20 0.17 0.17 0.15 0.15 0.14 0.13 0.13 0.13 0.11 0.11 0.11 0.09 0.08 0.08 0.08 0.08 0.07 0.07 0.07 0.07 0.06 0.05 0.05 0.05 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.02 0.02 0.02 0.01 a 0.01 a − 0.01 − 0.02 − 0.02 − 0.02 − 0.02 − 0.03 − 0.05 − 0.07 − 0.07 − 0.08 − 0.09 − 0.09 − 0.09 − 0.09 − 0.10 − 0.11 − 0.11 − 0.13 (continued on next page) 316 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 Table 2 (continued) Sub-agency Cabinet department or independent agency Leadership International Trade Administration Consumer Product Safety Commission Agricultural Marketing Service Equal Employment Opportunity Commission Centers for Medicare and Medicaid Services Administration for Children and Families Department of Housing and Urban Development Foreign Agricultural Service Centers for Disease Control and Prevention Office of Justice Programs Bureau of Reclamation Bureau of Land Management Bureau of Customs and Border Protection Farm Service Agency Combined Rural Development Services National Park Service Small Business Administration Indian Health Service Office of Special Education and Rehabilitative Services Bureau of Immigration and Customs Enforcement Federal Emergency Management Agency Bureau of Indian Affairs Grain Inspection, Packers and Stockyards Administration Bureau of Engraving and Printing Transportation Security Administration Office of the Under Secretary for Science and Technology Broadcasting Board of Governors Office of Postsecondary Education Substance Abuse and Mental Health Services Administration Commission on Civil Rights Department of Commerce Independent Agency Department of Agriculture Independent Agency Department of Health and Human Services Department of Health and Human Services Department of Housing and Urban Development Department of Agriculture Department of Health and Human Services Department of Justice Department of Interior Department of Interior Department of Homeland Security Department of Agriculture Department of Agriculture Department of Interior Independent Agency Department of Health and Human Services Department of Education Department of Homeland Security Department of Homeland Security Department of Interior Department of Agriculture Department of Treasury Department of Homeland Security Department of Homeland Security Independent Agency Department of Education Department of Health and Human Services Independent Agency − 0.13 − 0.14 − 0.14 − 0.14 − 0.15 − 0.15 − 0.15 − 0.19 − 0.20 − 0.21 − 0.21 − 0.22 − 0.22 − 0.22 − 0.22 − 0.23 − 0.28 − 0.29 − 0.30 − 0.32 − 0.36 − 0.38 − 0.40 − 0.41 − 0.43 − 0.49 − 0.51 − 0.52 − 0.54 − 0.59 a Signifies median score. and Human Services score low on leadership. Three Department of Homeland Security sub-agencies are among the ten lowest integrated leadership scores (although three others are among the top twenty integrated leadership scores). Eight out of eleven Department of Agriculture sub-agencies and six of nine Department of Health and Human Services sub-agencies in the sample have scores below the median integrated leadership score. Telling patterns can also be discerned from the ordering of sub-agencies in the sample by PART results scores. Some of the subagencies that scored low on leadership also have low PART results scores. For instance, six out of eight Department of Homeland Security sub-agencies have PART results scores below the median for that variable. Six of eleven Department of Agriculture subagencies have PART results scores below the median, with three of these sub-agencies among the bottom ten PART results scores. Among sub-agencies scoring high on performance, four out of six Environmental Protection Agency sub-agencies and five out of eight Department of Defense sub-agencies have PART results scores at or above the median. Surprisingly, seven out of nine Department of Health and Human Services sub-agencies have scores above the median PART results score, even though most subagencies in this department scored below the median on leadership. Also, although Department of Justice sub-agencies in the sample tend to score high on leadership, sub-agencies in this department are more evenly distributed on their PART results scores. The discussion now turns to the OLS regression analysis. The R-square for the model is 0.15 (F-value = 3.24). This indicates a moderate level of predictive power for the model, given that the model is based in part on individual-level survey data that tends to yield low R-squares. The low VIF statistics fail to indicate high levels of multicollinearity in the model. A scatterplot of the relationship between the dependent and independent variable (not shown) reveals an approximate linear relationship with only one extreme outlier. Since excluding this observation fails to alter the results in a meaningful way, it was included in the final analysis. The coefficient for the variable integrated leadership is 20.68 (p < 0.05 level) (see Table 4). As expected, leadership involving the sharing of five leadership roles within and across levels of the hierarchy is positively correlated with PART results. The integrative leadership variable has the second highest standardized coefficient in the model, making it one of the strongest predictors of performance. Moving beyond the issue of statistical significance, how much of a substantive effect does integrated leadership have on organizational performance? Scholars have engaged in a lively debate over how much management and leadership really matters when it comes to predicting and improving organizational performance. Some contend that the impact of leadership on performance is close to nil (Lieberson & O'Connor, 1972; Salancik & Pfeffer, 1977). Population ecologists, in particular, have downplayed the role of management and leadership, arguing that organizations have a limited capacity to change, due to structural inertia, and therefore are generally unable to adapt to their environment (Hannan & Freeman, 1984). Organizations either “fit” their environment and survive or are “selected against” and die. Kaufman (1981) concluded that federal executives have minimal effect on policies and programs because of the multitude of pressures and controls placed on them by political S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 317 Table 3 Federal sub-agency rankings by PART results scores. Sources: 2006 Federal Human Capital Survey, OPM, and Program Assessment Rating Tool, OMB. Sub-agency Cabinet department or independent agency PART score Public Buildings Service Health Resources and Services Administration United States Secret Service Bureau of Engraving and Printing Railroad Retirement Board Federal Trade Commission Bureau of Prisons/Federal Prison System Securities and Exchange Commission National Science Foundation Nuclear Regulatory Commission Broadcasting Board of Governors National Credit Union Administration Combined Research, Education, and Economic Services National Institutes of Health Environmental Protection Agency — Office for Prevention, Pesticides and Toxic Substances Indian Health Service Office of Surface Mining, Reclamation and Enforcement Consumer Product Safety Commission Administration On Aging Social Security Administration Defense Contract Audit Agency Defense Contract Management Agency Administration for Children and Families National Nuclear Security Administration Agricultural Research Service U.S. Geological Survey Environmental Protection Agency — Region 3 Financial Management Service Bureau of the Census Executive Office for Immigration Review Substance Abuse and Mental Health Services Administration Defense Commissary Agency Environmental Protection Agency — Office of Air and Radiation Food and Nutrition Service Centers for Disease Control and Prevention Combined Rural Development Services U.S. Marshals Service Minerals Management Service Pension Benefit Guaranty Corporation Executive Office U.S. Attorneys and U.S. Attorneys' Office U.S. Navy Civil Division Small Business Administration Environmental Protection Agency — Office of Solid Waste and Emergency Response NASA — Headquarters Federal Aviation Administration Natural Resources Conservation Service U.S. Army Departmental Offices Department of State National Oceanic And Atmospheric Administration U.S. Marine Corps Federal Highway Administration U.S. Visit National Park Service Employment Standards Administration Office of Justice Programs Alcohol, Tobacco, Firearms, and Explosives Department of Housing and Urban Development Federal Bureau of Investigations United States Coast Guard Bureau of Customs and Border Protection Bureau of Reclamation DOE Headquarters and Field Farm Service Agency Animal and Plant Health Inspection Service Environmental Protection Agency — Office of Water General Service Administration Department of Health and Human Services Department of Homeland Security Department of Treasury Independent Agency Independent Agency Department of Justice Independent Agency Independent Agency Independent Agency Independent Agency Independent Agency Department of Agriculture Department of Health and Human Services Independent Agency Department of Health and Human Services Department of Interior Independent Agency Department of Health and Human Services Social Security Administration Department of Defense Department of Defense Department of Health and Human Services Department of Energy Department of Agriculture Department of Interior Independent Agency Department of Treasury Department of Commerce Department of Justice Department of Health and Human Services Department of Defense Independent Agency Department of Agriculture Department of Health and Human Services Department of Agriculture Department of Justice Department of Interior Independent Agency Department of Justice Department of Defense Department of Justice Small Business Administration Independent Agency Independent Agency Department of Transportation Department of Agriculture Department of Defense Department of Treasury Department of State Department of Commerce Department of Defense Department of Transportation Department of Homeland Security Department of Interior Department of Labor Department of Justice Department of Justice Department of Housing and Urban Development Department of Justice Department of Homeland Security Department of Homeland Security Department of Interior Department of Energy Department of Agriculture Department of Agriculture Independent Agency 94.69 92.60 86.80 86.80 86.80 86.60 86.60 85.69 82.39 81.33 80.28 80.20 80.01 80.00 80.00 78.16 78.04 77.79 75.00 74.33 73.60 73.60 72.29 68.20 68.11 66.80 66.80 66.80 66.75 66.75 66.75 66.60 66.50 64.64 64.52 64.17 63.59 61.70 60.20 60.00 60.00 60.00 59.79 59.11 58.69 58.50 57.75 56.99 56.88 a 55.37 55.30 53.66 53.42 53.40 53.40 53.23 53.20 53.20 52.71 49.47 49.17 48.26 47.40 47.16 46.48 44.59 43.30 (continued on next page) 318 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 Table 3 (continued) Sub-agency Cabinet department or independent agency PART score Environmental Protection Agency — Office of Research and Development U.S. Fish and Wildlife Service U.S. Air Force Forest Service Transportation Security Administration Equal Employment Opportunity Commission Veterans Benefits Administration Federal Acquisition Service Federal Emergency Management Agency International Trade Administration Millennium Challenge Corporation Bureau of Land Management Internal Revenue Service Centers for Medicare and Medicaid Services Employment and Training Administration Occupational Safety and Health Administration Bureau of Immigration and Customs Enforcement Bureau of Indian Affairs Corporation for National and Community Service Office of Postsecondary Education Office of Special Education and Rehabilitative Services Office of Personnel Management Foreign Agricultural Service Army Corps of Engineers Office of the Under Secretary for Science and Technology Agricultural Marketing Service Office of the Secretary Federal Housing Finance Board Commission on Civil Rights Grain Inspection, Packers and Stockyards Administration Independent Agency Department of Interior Department of the Air Force Department of Agriculture Department of Homeland Security Independent Agency Department of Veterans Affairs General Service Administration Department of Homeland Security Department of Commerce Independent Agency Department of Interior Department of Treasury Department of Health and Human Services Department of Labor Department of Labor Department of Homeland Security Department of Interior Independent Agency Department of Education Department of Education Independent Agency Department of Agriculture Army Corps of Engineers Department of Homeland Security Department of Agriculture Department of Health and Human Services Independent Agency Independent Agency Department of Agriculture 43.14 42.54 41.71 41.67 40.72 40.20 40.00 39.94 37.10 36.58 33.20 33.20 33.09 33.00 29.26 26.40 26.40 24.06 23.63 22.98 21.08 20.07 20.00 16.69 16.13 14.19 11.53 8.25 8.25 5.50 a Signifies median score. overseers (see also Lynn, 1981; Warwick, 1975). Scholars on the other side of the debate point to a substantial body of research showing that leadership behavior has a positive influence on organizational and subordinate performance (see Bass, 1990; Van Wart, 2005; Yukl, 2002). In short, the more fitting question seems to be not whether leadership matters, but rather, to what extent does it matter? Since integrated leadership is measured using a standardized summated rating scale, its coefficient indicates that an increase of one standard deviation results in approximately a 21 point increase in the sub-agency PART results score, which ranges from 0 to 100. Compared to recent public sector studies, this appears to be a sizeable substantive effect. For example, Meier and O'Toole (2002) found that the maximum effect of managerial quality on educational performance, measured in terms of student performance on standardized tests, was about a 5 point increase on a 0–100 point indicator. Fernandez (2005), using the same 0– 100 point indicator, estimated that the combined effects of leadership behavior (including managing the internal operations and the external environment and promoting change and innovation) was less than a 5 point increase in performance. To further explore the size effect of leadership on performance, we also used an approach frequently used by leadership scholars. This approach involves estimating the percent of the variance in organizational performance (measured typically in terms of financial performance) that is accounted for by measures of leadership. Empirical studies adopting this approach have provided a wide range of size effects, from nearly no portion of the variance in performance accounted for by leadership (Lieberson & O'Connor, 1972) to anywhere from 5 to 20% of the variance in performance (Thomas, 1988; Waldman, Ramirez, House, & Puranam, 2001; see also Fernandez, 2008; Pfeffer & Salancik, 1978). We used hierarchical regression to estimate the percent of the Table 4 OLS regression results (Dependent variable = PART results). Variable Integrated leadership Percent political appointees Organizational complexity Independent agency Budget F-value R-square N *p < 0.10, **p < 0.05, ***p < 0.01. Coef. 20.68** − 2.98*** 2.41 8.26 − 0.00 3.24 0.15 Stand. Coef. 0.20 − 0.27 0.02 0.16 − 0.03 97 VIF 1.12 1.15 1.03 1.13 1.07 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 319 variance in PART results accounted for by the integrated leadership variable. The R-square for a regression model with all of the control variables minus integrated leadership is 0.11. Adding the integrated leadership variable to the model raises the R-square to 0.15. The sharing of the five leadership roles among organizational members throughout the hierarchy accounts, therefore, for about 4% (0.15–0.11) of the variance in PART results. Using this second approach, integrated leadership appears to have a much more modest effect on performance. The results for the control variables also appear in Table 4. The variable percent of political appointees, a measure of politicization, has a coefficient of −2.98 (p < 0.01). This variable has the largest standardized coefficient in the model. Higher levels of politicization in a sub-agency appear to raise the demand for political responsiveness, an expectation of public organizations that often conflicts with competence criteria such as efficiency and effectiveness. Also, as Lewis (2008) discovered, political appointees in senior executive positions have less experience in working for their bureaus and shorter tenures in their current leadership positions compared to careerists in similar positions, two factors that appear to explain the negative impact of politicization on performance. The dummy variable independent agency has a coefficient with a value of 8.26 that fails to achieve statistical significance. Independent sub-agencies have slightly higher numbers of political appointees than their counterparts in cabinet-level departments. However, this does not appear to influence their performance. The coefficient for structural complexity fails to achieve statistical significance. The challenges of having to coordinate the work of a more heterogeneous workforce appear to have no influence on performance. The variable budget also fails to achieve statistical significance, indicating that sub-agencies with greater budgetary resources perform about as well as those with smaller budgets, controlling for other variables. 6. Conclusion The present study sought to synthesize leadership and public administration research to develop and measure the concept of integrated leadership in the public sector. Integrated leadership is conceived of as the combined efforts of organizational members across multiple levels of the hierarchy to perform five leadership roles: task-, relations-, change-, diversity-, and integrity-oriented leadership. The findings show that integrated leadership in the public sector matters when it comes to improving organizational performance. Integrated leadership is positively correlated with performance in the federal government as measured using PART results scores. Moreover, the size of leadership's effect on performance is meaningful, but the estimate of size is sensitive to the method used to compute it. In terms of substantive effect on the PART results score, a one standard deviation increase in integrated leadership results in almost a 21 point increase in the dependent variable. This would appear to be a sizeable effect and one that far exceeds previous estimates reported in the public management literature (Fernandez, 2005; Meier & O'Toole, 2002) using the same estimation method. Adopting another approach more commonly used by leadership researchers, we find that integrated leadership accounts for about 4% of the variance in performance, an impact of smaller size. Although modest, a leadership effect of this latter size is not trivial, especially in light of the scale of federal operations. Public management scholars should be mindful of how using different approaches to estimating size effects can produce divergent results. The approach taken by leadership scholars that involves estimating the percent of the variance in performance accounted for by leadership variables offers the advantage of allowing researchers to compare size effects across studies using different measures of performance. This advantage might prove to be a critical one in the public sector, where we find a dearth of performance measures available for comparing different types of public organizations. While the advent of shared leadership as a legitimate approach to the study of leadership is a recent phenomenon, organization theorists for several decades have demonstrated the salient role played by leaders at multiple organizational levels. Small groups research has shown that leadership at low levels of the hierarchy is a key determinant of work team effectiveness (Guzzo & Dickson, 1996; Kerr & Tindale, 2004). Other researchers have found that middle managers serve a critical role in organizations as architects and champions for organizational change (Dutton, Ashford, O'Neill, & Lawrence, 2001). This study of shared leadership in the federal bureaucracy should encourage public management scholars to adopt a broader view of leadership, one that recognizes the contributions to organizational effectiveness made by leaders at multiple levels. The continued treatment of leadership as a role played by a top executive runs the risk of failing to capture the full range of leadership behavior and efforts underway in public organizations. With this point in mind, we caution the reader about the study's limited ability to accurately capture leadership behavior at all levels of the federal sub-agencies in our sample. The majority of survey items used to measure integrated leadership referred to the behavior of team leaders, supervisors and managers; only a few asked directly about employees' perceptions of the agency's senior leadership. The findings might very well underestimate the contributions of senior executives to organizational performance. Other limitations to this study warrant discussion. While there are five leadership roles embedded in the concept of integrated leadership, it is important to note that the data prevented direct measurement and analysis of collaborative leadership, a leadership role that is becoming increasingly important in the governance arena. Collaborative management and leadership entails a variety of inter-organizational activities, including shaping policy issues and public priorities; mobilizing resources; facilitating coordination and mutual adjustment; resolving conflict; building trust; and measuring performance (Agranoff & McGuire, 2003; Bingham & O'Leary, 2008; Thomson & Perry, 2006). Networked arrangements in which multiple actors are involved in co-producing a public service without any one of them being in charge places a premium on this type of leadership (Crosby & Bryson, 2005). Although the integrated leadership construct taps into dimensions such as diversity- and integrity- 320 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 oriented leadership that are relevant for collaborative leadership, additional data gathering and analysis is needed to explore the relationship between collaborative leadership and the five leadership roles examined in this study. The approach taken to defining and measuring integrated leadership might also raise questions regarding convergent and discriminant validity. As the results of the higher-order confirmatory factor analysis (CFA) indicate, the five-dimensional model of integrated leadership exhibits a better fit with the data than a one-dimensional model. All five leadership roles are positively correlated with one underlying construct, which we label integrated leadership, and yet, they are sufficiently different to suggest they capture distinct dimensions of leadership. However, most of the goodness-of-fit measures in the higher-order CFA are near the borderline between good and poor model fit, indicating room for improvement. In particular, there is reason to believe that a six-dimensional model of integrative leadership that includes a leadership style aimed at managing collaboratively across organizational boundaries would offer a better model fit than our five-dimensional model of integrated leadership. Moreover, the five dimensions representing different leadership roles exhibit fairly high bivariate correlations, ranging from r = 0.61 (changeand diversity-oriented leadership) to r = 0.77 (task- and relations-oriented leadership). These correlations suggest the need for additional research on the discriminant validity of the integrated leadership construct and more general issues of appropriate model specifications for the construct (Jarvis, MacKenzie, & Podsakoff, 2003). In fact, we believe future research about integrated and shared leadership should place a high priority on measurement issues because of the centrality of measurement for further development of shared and integrated leadership research. The findings are strengthened by the fact that the dependent and independent variables are measured using different data sources, helping to minimize common source bias. Another thorny methodological issue that arises in this study is simultaneity bias. Attribution theory of leadership posits that followers make positive attributions of leaders for a variety of reasons, including when the organization performs well (Awamleh & Gardner, 1999; Lord & Maher, 1991). This raises the specter of a simultaneous relationship between leadership and performance when using employee attitudes to measure leadership behavior and traits: good leadership improves performance, but higher levels of performance cause followers to make positive attributions of leaders. We tried to minimize simultaneity bias by using independent and dependent variables measured at different points in time. That is, roughly half of the PART results scores were assigned by OMB in 2007, while the data used to measure integrated leadership was collected by OPM in 2006. Had the data been available to derive all the PART results scores in 2007, we would have concluded more confidently that the relationship between integrated leadership and PART results was a causal one rather than a mere statistical correlation. As such, the results should be interpreted with some caution. Finally, the data sources and the sample of organizations on which the empirical analysis is based suggest that the findings are generalizable across the federal bureaucracy. Whether or not a leadership style that incorporates the same five roles has a positive influence on performance in smaller state and local agencies, and what the size of such an effect might be, are empirical questions that remain to be answered. Appendix A. 2006 Federal Human Capital Survey items used to construct integrated leadership measure Source: 2006 Federal Human Capital Survey, U.S. Office of Personnel Management. Task-oriented leadership role I1. Managers communicate the goals and priorities of the organization. I2. I know how my work relates to the agency's goals and priorities. I3. Managers promote communication among different work units (for example, about projects, goals, and needed resources). I4. Managers review and evaluate the organization's progress toward meeting its goals and objectives. I5. Supervisors/team leaders provide employees with constructive suggestions to improve their job performance. Relations-oriented leadership role I6. I am given a real opportunity to improve my skills in my organization. I7. Supervisors/team leaders in my work unit provide employees with the opportunities to demonstrate their leadership skills. I8. Employees have a feeling of personal empowerment with respect to work processes. I9. Supervisors/team leaders in my work unit support employee development. Change-oriented leadership role I10. I feel encouraged to come up with new and better ways of doing things. I11. Creativity and innovation are rewarded. Diversity-oriented leadership role I12. Supervisors/team leaders in my work unit are committed to a workforce representative of all segments of society. I13. Managers/supervisors/team leaders work well with employees of different backgrounds. Integrity-oriented leadership role I14. My organization's leaders maintain high standards of honesty and integrity. I15. Prohibited Personnel Practices (for example, illegally discriminating for or against any employee/applicant, obstructing a person's right to compete for employment, knowingly violating veterans' preference requirements) are not tolerated. I16. I can disclose a suspected violation of any law, rule or regulation without fear of reprisal. Response Categories: All survey items have responses ranging either from 1 = Strongly Disagree to 5 = Strongly Agree or 1 = Very Dissatisfied to 5 = Very Satisfied S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 321 References Adams, J. S. (1965). Inequity in social exchange. In L. Berkowitz (Ed.), Advances in experimental social psychology, Vol. 2. (pp. 267−299). New York, NY: Academic Press. Agranoff, R., & McGuire, M. (1965). Collaborative public management: New strategies for local governments, Washington, D.C.: Georgetown University Press. Andrews, R., Boyne, G. A., & Walker, R. M. (2006). Strategy content and organizational performance: An empirical analysis. Public Administration Review, 66, 52−56. Awamleh, R., & Gardner, W. L. (1999). Perceptions of leader charisma and effectiveness: The effects of vision content, delivery, and organizational performance. Leadership Quarterly, 10, 345−373. Barney, J. B., & Wright, P. M. (1998). On becoming a strategic partner: The role of human resources in gaining competitive advantage. Human Resource Management, 37, 31−46. Bass, B. M. (1985). Leadership and performance beyond expectations. New York: Free Press. Bass, B. M. (1990). Bass and Stogdill's handbook of leadership: Theory, research, and managerial applications, Third Edition. New York: Free Press. Bass, B. M., & Avolio, B. J. (1990). The implications of transformational and transactional leadership for individual, team, and organizational development. In R. Woodman & W. Passmore (Eds.), Research in organizational change and development (pp. 231−272). Greenwich, CT: JAI Press. Bennis, W. G., & Nanus, B. (1985). Leaders: The strategies for taking charge. New York: Harper and Row. Bingham, L. B., & O’Leary, R. (Eds.). (2008). Big ideas in collaborative public management, Armonk, NY: M.E. Sharpe, Inc. Boyatzis, R. E. (1982). The competent manager. New York: John Wiley. Boyne, G. A. (2003). Sources of public service improvement: A critical review and research agenda. Journal of Public Administration Research and Theory, 13, 367−394. Brewer, G. A., & Selden, S. C. (2003). Why elephants gallop: Assessing and predicting organizational performance in federal agencies. Journal of Public Administration Research and Theory, 10, 685−712. Bryman, A. (1993). Charismatic leadership in business organizations: Some neglected issues. Leadership Quarterly, 4, 289−304. Burnham, K. P., & Anderson, D. R. (2004). Why elephants gallop: Assessing and predicting organizational performance in federal agencies. Sociological Methods and Research, 33, 261−304. Burns, J. M. (1978). Leadership. New York: Harper and Row. Carson, J. B., Tesluk, P. E., & Marrone, J. A. (2007). Shared leadership in teams: An investigation of antecedent conditions and performance. Academy of Management Journal, 5, 1217−1234. Colquitt, J. A., Conlon, D. E., Wesson, M. J., Porter, C. O. L. H., & Ng, K. Y. (2001). Justice at the millennium: A meta-analytic review of 25 years of organizational justice research. Journal of Applied Psychology, 86, 425−445. Crosby, B., & Bryson, J. (2005). Leadership for the common good: Tackling public problems in a shared-power world. San Francisco, CA: Jossey-Bass. Dansereau, F., Jr., Graen, G., & Haga, W. J. (1975). A vertical dyad linkage approach to leadership within formal organizations: A longitudinal investigation of the role making process. Organizational Behavior and Human Performance, 13, 46−78. Doig, J. W., & Hargrove, E. C. (Eds.). (1990). Leadership and innovation: Entrepreneurs in government, Abridged Edition. Baltimore: Johns Hopkins Press. Dutton, J. E., Ashford, S. J., O'Neill, R. M., & Lawrence, K. A. (2001). Moves that matter: Issue selling and organizational change. Academy of Management Journal, 44, 716−736. Ekvall, G., & Arvonen, J. (1991). Change-centered leadership: An extension of the two-dimensional model. Scandinavian Journal of Management, 7, 15−26. Ensley, M. D., Hmieleski, K. M., & Pearce, C. L. (2006). The importance of vertical and shared leadership within new venture top management teams: Implications for the performance of startups. Leadership Quarterly, 17(3), 217−231. Ensley, M. D., Pearson, A., & Pearce, C. L. (2003). Top management team process, shared leadership, and new venture performance: A theoretical model and research agenda. Human Resource Management Review, 13, 329−346. Enticott, G., Boyne, G. A., & Walker, R. M. (2009). The use of multiple informants in public administration research: Data aggregation using organizational echelons. Journal of Public Administration Research and Theory, 19, 229−253. Fan, X., Thompson, B., & Wang, L. (1999). Effects of sample size, estimation method, and model specification on structural equation modeling fit indexes. Structural Equation Modeling, 6, 56−83. Fernandez, S. (2008). Examining the effects of leadership behavior on employee perceptions of performance and job satisfaction. Public Performance and Management Review, 32, 175−205. Fernandez, S. (2005). Developing and testing an integrative framework of public sector leadership: Evidence from the public education arena. Journal of Public Administration Research and Theory, 15, 197−217. Fernandez, S., & Rainey, H. G. (2006). Managing successful organizational change in the public sector: An agenda for research and practice. Public Administration Review, 66, 168−176. Fiedler, F. E. (1967). A theory of leadership effectiveness. New York: McGraw-Hill. Fiedler, F. E. (1986). The contribution of cognitive resources to leadership performance. Journal of Applied Social Psychology, 16, 532−548. Fiedler, F. E., & Garcia, J. E. (1987). New approaches to leadership: Cognitive resources and organizational performance. New York: John Wiley. Fisher, B. M., & Edwards, J. E. (1988, August). Consideration and initiating structure and their relationships with leader effectiveness: A meta-analysis. Proceedings of the Academy of Management, 201−205. Fleishman, E. A. (1953). The description of supervisory behavior. Journal of Applied Psychology, 37, 1−6. Fletcher, J. K., & Kaüfer, K. (2003). Shared Leadership. In C. L. Pearce & J. A. Conger (Eds.), Shared leadership: Reframing the hows and whys of leadership. Thousand Oaks, California: Sage Publishers. Florida, R. (2002). The rise of the creative class. New York: Basic Books. Garson, G. D. (2009). Chi-square significance tests. From Statnotes: Topics in Multivariate Analysis. Retrieved 08/15/2009 from http://faculty.chass.ncsu.edu/ garson/pa765/statnote.htm Gerstner, C. R., & Day, D. V. (1997). Meta-analytic review of leader–member exchange theory: Correlates and construct issues. Journal of Applied Psychology, 82, 827−844. Graen, G. B., & Cashman, J. F. (1975). A role making model of leadership in formal organizations: A developmental approach. In J. G. Hunt & L. L. Larson (Eds.), Leadership frontiers. Kent, Ohio: Kent State University Press. Graen, G. B., & Scandura, T. (1987). Toward a psychology of dyadic organizing. Research in Organizational Behavior, 9, 175−208. Gronn, P. (2002). Distributed leadership as s unit of analysis. Leadership Quarterly, 13(4), 423−451. Guzzo, R. A., & Dickson, M. W. (1996). Teams in organizations: Recent research on performance and effectiveness. Annual Review of Psychology, 47, 307−338. Halpin, A. W., & Winer, B. J. (1957). A factorial study of the leader behavior descriptions. In R. M. Stogdill & A. E. Coons (Eds.), Leader behavior: Its description and measurement. Columbus, Ohio: Bureau of Business Research, Ohio State University. Hannan, M. T., & Freeman, J. H. (1984). Structural inertia and organizational change. American Sociological Review, 49, 149−164. Hemphill, J. K., & Coons, A. E. (1957). Development of the leader behavior description questionnaire. In R. M. Stogdill & A. E. Coons (Eds.), Leader behavior: Its description and measurement. Columbus, Ohio: Bureau of Business Research, Ohio State University. Hersey, P., Blanchard, K. H., & Johnson, D. E. (2000). Management of organizational behavior: Leading human resources, Eight Edition Upper Saddle River, NJ: Prentice Hall. Hiller, N. J., Day, D. V., & Vance, R. J. (2006). Collective enactment of leadership roles and team effectiveness: A field study. Leadership Quarterly, 17(4), 387−397. Horwitz, S. K., & Horwitz, I. B. (2007). The effects of team diversity on team outcomes: A meta-analytic review of team demography. Journal of Management, 33, 987−1015. 322 S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 House, R. J. (1971). A path–goal theory of leadership effectiveness. Administrative Science Quarterly, 16, 321−339. House, R. J. (1977). A 1976 theory of charismatic leadership. In J. G. Hunt & L. L. Larson (Eds.), Leadership: The cutting edge. Carbondale, Illinois: Southern Illinois University Press. Hunt, J. G. (1991). Leadership: A new synthesis. New Park, CA: Sage. Jarvis, C. B., MacKenzie, S. B., & Podsakoff, P. M. (2003). A critical review of construct indicators and measurement model misspecification in marketing and consumer research. Journal of Consumer Research, 30(2), 199−218. Katz, R., & Katz, D. (1960). Leadership practices in relations to productivity and morale. In D. Cartwright & A. Zander (Eds.), Group dynamics: Research and theory, Second Edition. Elmsford, NY: Row, Paterson. Katz, D., Macoby, N., & Morse, N. (1950). Productivity, supervision, and morale in an office situation. Ann Arbor: Institute for Social Research. Kaufman, H. (1981). The Administrative behavior of Federal bureau chiefs. Washington, DC: The Brookings Institution. Kerr, S., & Jermier, J. M. (1978). Substitutes for leadership: Their meaning and measurement. Organizational Behavior and Human Performance, 22, 375−403. Kerr, N. L., & Tindale, R. S. (2004). Group performance and decision making. Annual Review of Psychology, 55, 623−655. Kochan, T., Bezrukova, K., Jackson, S., Joshi, A., Jehn, K., Leonard, J., et al. (2003). The effects of diversity on business performance: Report of the diversity research network. Human Resource Management, 42, 3−21. Kotter, J. P. (1982). The general managers. New York: Free Press. Lewis, D. E. (2008). The politics of presidential appointments: Political control and bureaucratic performance. Princeton, New Jersey: Princeton University Press. Lieberson, S., & O'Connor, J. F. (1972). Leadership and organizational performance: A study of large corporations. American Sociological Review, 37, 117−130. Light, P. (1998). Sustaining innovation: Creating nonprofit and government organizations that innovate naturally. San Francisco, California: Jossey-Bass. Likert, R. (1967). The human organization: Its management and value. New York: McGraw-Hill. Lindell, M., & Rosenqvist, G. (1992). Is there a third management style? The Finnish Journal of Business Economics, 3, 171−198. Lindell, M., & Rosenqvist, G. (1992, Winter). Management behavior dimensions and development orientation. Leadership Quarterly, 355−377. Lord, R. G., & Maher, K. J. (1991). Leadership and information processing: Linking perceptions and performance. Boston, MA: Unwin-Hyman. Lynn, L. E. (1981). Managing the public’s business. New York: Basic Books. McClelland, D. C. (1965). N-achievement and entrepreneurship: A longitudinal study. Journal of Personality and Social Psychology, 1, 389−392. McClelland, D. C. (1985). Human motivation. Glenview, IL: Scott Foresman. McLeod, P. L., Lobel, S. A., & Cox, T. H., Jr. (1996). Ethnic diversity and creativity in small groups. Small Group Research, 27, 246−264. Meier, K. J., & O'Toole, L. J., Jr. (2001). Managerial strategies and behavior in networks: A model with evidence from U.S. public education. Journal of Public Administration Research and Theory, 11, 271−295. Meier, K. J., & O'Toole, L. J., Jr. (2002). Public management and organizational performance: The impact of managerial quality. Journal of Policy Analysis and Management, 21, 629−643. Meier, K. J., O’Toole, L. J., Boyne, G. A., & Walker, R. H. (2007). Strategic management and the performance of public organizations: Testing venerable ideas against recent theories. Journal of Public Administration Research and Theory, 17, 357−377. Meindl, J. R. (1990). On leadership: An alternative to the conventional wisdom. Research in Organizational Behavior, 12, 159−203. Mintzberg, H. (1972). The nature of managerial work. New York: HarperCollins. Moe, T. M. (1985). The politicized presidency. In J. E. Chubb & P. E. Peterson (Eds.), The new direction in American politics. Washington, DC: Brookings Institution Press. Moynihan, D. P., & Ingraham, P. W. (2004). Integrative leadership in the public sector: A model of performance information use. Administration & Society, 36, 427−453. National Academy of Public Administration. (2003). Leadership for leaders: Senior executives and middle managers. Vienna, VA: Management Concepts. O'Toole, J., Galbraith, J., & Lawler, E. E. (2002). When two (or more) heads are better than one: The promise and pitfalls of shared leadership. Los Angeles, California: Center for Effective Organizations, Marshall School of Business, University of Southern California. O'Toole, J., & Meier, K. J. (1999). Modeling the impact of public management: Implications of structural context. Journal of Public Administration Research and Theory, 9, 505−526. Pearce, C. L., & Conger, J. A. (2003). All those years ago: Underpinnings of shared leadership. In C. L. Pearce & J. A. Conger (Eds.), Shared leadership: Reframing the hows and whys of leadership. Thousand Oaks, California: Sage Publishers. Pearce, C., & Sims, H. P. (2000). Shared leadership: Toward a multi-level theory of leadership. In M. Beyerlein, D. Johnson, & S. Beyerlein (Eds.), Advances in interdisciplinary studies of work teams, Vol. 7 (pp. 115−139). JAI Press: New York. Pearce, C. L., & Sims, H. P., Jr. (2002). Vertical versus shared leadership as predictors of the effectiveness of change management teams: An examination of aversive, directive, transactional, transformational, and empowering leader behaviors. Group Dynamics: Theory, Research, and Practice, 6, 172−197. Pfeffer, J., & Salancik, G. R. (1978). The external control of organizations. New York, NY: Harper & Row. Pitts, D. W. (2005). Diversity, representation, and performance: Evidence about race and ethnicity in public organizations. Journal of Public Administration Research and Theory, 15, 615−631. Radin, B. A. (2006). Challenging the performance movement: Accountability, complexity, and democratic values. Washington, D.C.: Georgetown University Press. Rainey, H. G. (2003). Understanding and managing public organizations. San Francisco, CA: Jossey-Bass. Rainey, H. G., & Steinbauer, P. (1999). Galloping elephants: Developing elements of a theory of effective government organizations. Journal of Public Administration Research and Theory, 9, 1−32. Richard, O. C., Barnett, T., Dwyer, S., & Chadwick, K. (2004). Cultural diversity in management, firm performance, and the moderating role of entrepreneurial orientation dimensions. Academy of Management Journal, 47, 255−266. Ricucci, N. M. (Ed.). (1995). Unsung heroes: Federal execucrats making a difference. Washington, DC: Georgetown University Press. Salancik, G. R., & Pfeffer, J. (1977). Constraints on administrator discretion: The limited influence of mayors on city budgets. Urban Affairs Quarterly, 12, 475−498. Schriesheim, C. A., Castro, S., & Cogliser, C. C. (1999). Leader–member exchange research: A comprehensive review of theory, measurement, and data-analytic procedures. Leadership Quarterly, 10, 63−113. Schumacker, R. E., & Lomax, R. G. (1978). A beginner’s guide to structural equation modeling. Erlbaum: Mahwah, NJ. Seers, A., Keller, T., & Wilkerson, J. M. (2003). Can team members share leadership? Foundations in research and theory. In C. L. Pearce & J. A. Conger (Eds.), Shared leadership: Reframing the hows and whys of leadership (pp. 77−102). Thousand Oaks, CA: Sage. Shamir, B., House, R. J., & Arthur, M. B. (1993). The motivational effects of charismatic leadership: A self-concept based theory. Organization Science, 4, 1−17. Stogdill, R. M. (1948). Personal factors associated with leadership. Journal of Psychology, 25, 35−71. Svara, J. H. (1994). Facilitative leadership in local government: Lessons from successful mayors and chairpersons. San Francisco, CA: Jossey-Bass. Thomas, A. B. (1988). Does leadership make a difference to organizational performance? Administrative Science Quarterly, 33, 388−400. Thomson, A. M., & Perry, J. L. (2006). Collaboration processes: Inside the black box. Public Administration Review, 66, 20−32. Trottier, A. M., Van Wart, M., & Wang, X. (2008). Examining the nature and significance of leadership in government organizations. Public Administration Review, 68, 319−333. U.S. Office of Management and Budget. (2007). Frequently asked questions. Retrieved April 10, 2007, from http://www.whitehouse.gov/omb/expectmore/faq.html U.S. Office of Personnel Management. (2006). Guide to senior executive service qualifications. Retrieved March 1, 2008, from http://www.opm.gov/ses/pdf/ SES_Quals_Guide_2006.pdf U.S. Office of Personnel Management. (2007). Results from the 2006 Federal Human Capital Survey. Retrieved August 1, 2007, from http://www.fhcs2006.opm.gov Van Wart, M. (2003). Public-sector leadership theory: An assessment. Public Administration Review, 23, 214−228. Van Wart, M. (2005). Dynamics of leadership in public service: Theory and practice. Armonk, New York: ME Sharpe. Vroom, V. H., & Yetton, P. W. (1973). Leadership and decision making. Pittsburgh, PA: University of Pittsburgh Press. Waldman, D. A., Ramirez, G. G., House, R. J., & Puranam, P. (2001). Does leadership matter? CEO leadership attributes and profitability under conditions of perceived environmental uncertainty. Academy of Management Journal, 44, 134−143. S. Fernandez et al. / The Leadership Quarterly 21 (2010) 308–323 323 Walker, R. M., & Boyne, G. A. (2006). Public management reform and organizational performance: An empirical assessment of the U.K. labour government's public service improvement strategy. Journal of Policy Analysis and Management, 25, 371−393. Warwick, D. P. (1975). A theory of public bureaucracy. Cambridge, MA: Harvard University Press. Webber, S. S., & Donahue, L. M. (2001). Impact of highly and less job-related diversity on work group cohesion and performance: A meta-analysis. Journal of Management, 27, 141−162. Yukl, D. P. (1989). Leadership in organizations, Second edition. Englewood Cliffs, NJ: Prentice Hall. Yukl, G. (1999). An evaluation of conceptual weaknesses in transformational and charismatic leadership theories. Leadership Quarterly, 10, 285−305. Yukl, G. (2002). Leadership in organizations, Fifth Edition. Upper Saddle River, NJ: Prentice Hall. Yukl, G., Gordon, A., & Taber, T. (2002). A hierarchical taxonomy of leadership behavior: Integrating a half century of behavior research. Journal of Leadership and Organizational Studies, 9, 15−32.
© Copyright 2026 Paperzz