ARTICLE IN PRESS G Model JJIM-966; No. of Pages 9 International Journal of Information Management xxx (2010) xxx–xxx Contents lists available at ScienceDirect International Journal of Information Management journal homepage: www.elsevier.com/locate/ijinfomgt Web-based interaction: A review of three important human factors Sherry Y. Chen a,b,∗ , Robert Macredie a a b School of Information Systems, Computing, and Mathematics, Brunel University, Uxbridge, United Kingdom Graduate Institute of Network Learning Technology, National Central University, Taiwan a r t i c l e i n f o Article history: Received 4 August 2009 Received in revised form 19 February 2010 Accepted 23 February 2010 Available online xxx Keywords: Web-based applications Prior knowledge Gender differences, Cognitive styles a b s t r a c t With the rapid development of information technology, the World Wide Web has been widely used in various applications, such as search engines, online learning and electronic commerce. These applications are used by a diverse population of users with heterogeneous backgrounds, in terms of their knowledge, skills, and needs. Therefore, human factors are key issues for the development of Web-based applications, leading research into human factors to grow significantly in the past decade. This paper identifies and reviews three important human factors that have been examined in existing empirical studies, including gender differences, prior knowledge, and cognitive styles. The main results from the analysis include that: (a) females have more disorientation problems than males; (b) flexible paths are more beneficial to experts while structured content is more useful to novices; and (c) Field Dependent and Field Independent users prefer to employ different search strategies. In addition to reviewing the existing empirical studies, this paper also highlights areas of future research. © 2010 Elsevier Ltd. All rights reserved. 1. Introduction The World Wide Web (Web) has grown as a unique space (Serrano, Maguitman, Boguñá, Fortunato, & Vespignani, 2007) and has become one of our major channels of information and communication (Weinreich, Obendorf, Herder, & Mayer, 2008). The Web provides a wealth of information to an incredibly diverse user population (Shneiderman, 2000) and designers face the constant challenge of developing Web-based applications that need to meet diverse user needs. Therefore, human factors are increasingly seen as important issues, as reflected in the substantial number of existing studies in the area. Among various human factors, previous research has shown that gender differences (e.g., Roy, Taylor, & Chi, 2003), prior knowledge (e.g., Calisir & Gurel, 2003), and cognitive styles (e.g., Chen & Macredie, 2004) have significant impacts on Web-based interaction. Furthermore, these three human factors have certain inter-relations. For example, females tend to behave similarly to novices, in terms of the extent to which they experience disorientation problems; males and experts seem to have similar preferences in their interaction patterns, with studies reporting that they enjoy non-linear interaction (Ford & Chen, 2000). Despite the growing number of studies looking at these three human factors, there is a lack of an integrated review which synthesizes their effects. To this end, this paper will present a state-of-the art review ∗ Corresponding author at: Graduate Institute of Network Learning Technology, National Central University, Taiwan, ROC. Tel.: +886 3 4227151x35413. E-mail address: [email protected] (S.Y. Chen). of the current research associated with these human factors. We believe that this review will be important for practitioners who want to develop a sound understanding of the needs and preferences of users with various characteristics, as well as academics who want to identify topic areas that have been researched or where research is lacking. This review will also help designers to develop Web-based personalized applications that can accommodate user’s individual differences. The ultimate goal is that these Web-based applications can facilitate user’s information seeking, which, in turn, can improve their performance and perception in relation to the Web-based applications being used. The remainder of this paper is organized as follows. Section 2 describes the methods used for this review. The results of the empirical studies for the three human factors identified are presented in the subsequent three sections: Section 3 (gender differences); Section 4 (prior knowledge); and Section 5 (cognitive styles). In addition to the synthesis of empirical findings related to the three human factors, this review will also discuss the limitations of existing research studies. As such, Section 6 highlights future research themes by identifying issues that had so far been paid less attention by scholars in this area. The paper ends with conclusions drawn from the analysis (Section 7). 2. Review methods Fig. 1 illustrates the review process, which consists of four stages. As shown in this figure, Stage 1 was to search the literature within electronic journals (including ACM Digital Library, IEEE Explore, and ScienceDirect) and using search engines on the 0268-4012/$ – see front matter © 2010 Elsevier Ltd. All rights reserved. doi:10.1016/j.ijinfomgt.2010.02.009 Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; 2 No. of Pages 9 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx Table 1 The criteria used to assess quality in stage 4. Rigor The research design was appropriate to address the aims of the study. There was an adequate description of the sample used and the methods for identifying and recruiting the sample. Appropriate data collection methods were used and described. There was adequate justification of the methods applied for data analyses. Credibility Sufficient data was presented to support the findings. There was adequate discussion of the evidence, both for and against the researcher’s arguments. Limitations of the study were discussed explicitly. The conclusions were properly supported/justified by the results. Fig. 1. The review process for this study. Internet (including AltaVista, Excite, and Google). These electronic resources were selected because they were known to include empirical studies related to gender differences, prior knowledge and cognitive styles. The search terms for these electronic resources included four groups: (1) Internet, Web, World Wide Web; (2) gender, females/males; boys/girls, and men/women; (3) prior knowledge, system experience, novices/experts, domain expertise, domain knowledge, computer experience, previous experience, Internet experience; and (4) cognitive styles, learning styles, Field Dependence. The first group was combined with each of the other three groups by using the Boolean ‘AND’ operator. This search strategy resulted in a total of 214 items being identified. Four main issues were taken into account in selecting studies: timeline; format; relevance; and quality. Stage 2s purpose was to select studies based on timeline and format. Regarding timeline, the review covers studies from 1993 to 2009. 1993 was chosen as a starting date for the review because the first popular Web browser, NCSA Mosaic, was introduced in 1993. We argue, therefore, that this year may be considered as the starting point of Web-based interaction. Regarding format, the aim was to provide a comprehensive review; thus, not only were studies published in journals considered, but also those from conference proceedings. However, master’s theses, doctoral dissertations, textbooks, and unpublished working papers were excluded because it was felt that academics and practitioners use journals and conference proceeding most often when seeking to acquire information and to disseminate findings. Also excluded from the review were editorials, prefaces, interviews, news items, reviews, correspondence, discussions, comments and reader’s letters. Applying these criteria meant that 78 of the 214 items were excluded. Stage 3 identified whether the remaining 136 studies were relevant based on their titles, abstracts and keywords: More specifically, studies were excluded if they did not present relevant empirical findings or if they were not conducted using Web-based applications. However, we found that abstracts were of variable quality, making judgments more difficult to make. Some abstracts were misleading or unclear, and several gave little indication of what was in the full article. In particular, it was not always obvious whether their findings are related to the aforementioned three human factors. Therefore, at this stage, we included all studies of which findings might reveal relationships between these three human factors and Web-based applications. If it was unclear from the title, abstract, and keywords: whether a study conformed to the screening criteria, it was included so that it could be subject to a detailed quality assessment in stage 4. As a result of stage 3, another 61 articles were excluded at this stage, leaving 75 studies to be considered in stage 4. Stage 4 assessed the quality of each of the remaining studies by examining the full text of the paper. The quality was mainly assessed using two criteria: rigor and credibility, which are described in Table 1. As a result of this analysis, 60 studies were finally identified and considered in the review. 3. Gender differences Literature in the computing field has examined gender differences since the early 1980s (Young, 2000) and has recognized gender as an important variable that influences computing skills. In general, literature has suggested that males report lower levels of computer anxiety than their female counterparts; in addition, it also seems that males achieve much better outcomes than females in the use of computers (Karavidas, Lim, & Katsikas, 2004). As the Web has become a popular platform for various applications, such as search engines, online learning and electronic commerce, a growing body of studies has been conducted to examine gender differences in the use of the Web specifically and this literature suggests that major differences between males and females lie within navigation patterns, attitudes and perceptions. 3.1. Navigation patterns Navigation is an important issue in Web-based interaction and a number of studies have found that there are relationships between gender differences and navigation patterns. Large et al. (2002) examined how boys and girls behaved differently when retrieving information from the Web. 53 students, comprising 23 boys and 30 girls from two grade-six classes, were the subjects of their study. The results revealed that the boys were more actively engaged in browsing than the girls. Overall, the boys explored more hypertext links per minute, tended to perform more page jumps per minute, entered more searches in search engines, and gathered and saved information more often than the girls, while the boys spent less time viewing pages than the girls. These findings are similar to those of Roy et al. (2003), who examined student’s navigation styles. 14 eighth-grade students, with an equal number of boys and girls, participated in their study. Roy et al. (2003) findings indicated that the boys tended to perform more page jumps per minute, which indicates that boys navigate the information space in a non-linear way. Conversely, the girls had a tendency to browse entire linked documents and to follow a linear navigation approach. Similar findings are also presented in a recent study by Liu and Huang (2008), who explored gender differences in an online reading environment by distributing 240 copies of a questionnaire. A total of 203 completed questionnaires were returned: 80 copies from males and 123 from females. Their findings showed that male Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; No. of Pages 9 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx readers preferred non-linear reading than female readers. However, Lorigo et al. (2006) obtained different findings in their study of 36 undergraduate students. They used eye tracking to analyze how boys and girls searched information when using Google and their results showed that girls more often returned to previously visited abstracts while boy’s navigation paths were more likely to be strictly linear. Non-linear navigation may cause disorientation problems. Ford and Miller (1996) studied the influence of gender differences in information seeking on the Web. 75 postgraduate students (40 males and 35 females) participated in the study. Compared to the males, the females seemed relatively disoriented and they generally felt themselves unable to find their way around effectively. Furthermore, Ford, Miller, and Moss (2001) investigated individual differences in Internet searching using a sample of 64 Master’s students with 20 males and 44 females. In line with their previous findings, they found that females had difficulties in finding their way effectively around the Internet, and they were more likely to get lost and did not feel in control. Another study by Leong and Hawamdeh (1999) examined gender differences in attitudes to using Web-based science lessons. 40 primary fifth-grade pupils (17 boys and 23 girls) participated in their study. Leong and Hawamdeh (1999) reported that the main dislike raised by girls was that they got lost and did not know what to do next. The aforementioned studies suggest that females and males show different approaches to navigation, reflected in the navigation patterns that they exhibit, but that there are contradictory findings. For example, a study by Hupfer and Detlor (2006) explored gender differences in information seeking behavior using a selfconcept orientation framework. They received 422 online surveys, of which 379 were complete, and their analysis of the responses found no relationships between gender differences and search frequency. 3.2. Attitudes and perceptions There has been a great deal of research on the influences of gender differences on user’s attitudes toward Web-based interaction. However, such research has yielded mixed results. A number of studies suggest that there are gender differences in attitudes towards Web-based interaction. An early study by Jackson, Ervin, Gardner, and Schmitt (2001) examined gender differences in Internet use. 630 Anglo-American undergraduates completed the Student Computer and Internet Survey, the results of which indicated that females reported more computer anxiety and less computer self-efficacy than males. Another early study by Schumacher and Morahan-Martin (2001) conducted a survey to identify gender differences in attitudes towards computers and the Internet. The survey was completed by 619 students. Schumacher and Morahan-Martin’s (2001) findings showed that females had lower levels of competence and reported feeling higher levels of discomfort, which, in turn, hampered their computer and Internet experience. The other study conducted by Liaw (2002) examined gender differences in attitudes towards using computers and the Web. 809 participants were chosen and asked to record their perceptions using a Web-based survey over the Internet. 260 respondent’s data were statistically analyzed with the results showing that male students had more positive attitudes towards computers and the Web when compared to female students. Similar results were also found in the study by Koohang (2004), which investigated student’s perceptions towards the use of a digital library by using a Likert-type instrument. The participants were 154 students enrolled in an undergraduate management program, and the results indicated that males had significantly higher positive perceptions than the females toward using the digital library. 3 The studies reviewed so far in this section indicate that females tend to have more negative attitudes towards the use of the Web than males and that they feel less able when using the Web than their male peers. However, other studies indicate that females show more positive attitudes than males or that there are no significant differences between females and males. For example, Kim, Lehto, and Morrison (2007) examined gender differences in online information attitudes, preferences and behaviors within the domain of travel-related information. 1334 responses were received from their study, with the results showing that females demonstrated stronger positive attitudes than males. Furthermore, Koohang and Durante (2003) conducted a study to measure learner’s perception of a Web-based distance learning program. 106 undergraduate students (50 males and 56 females) participated in the study. Gender was one of the variables investigated in the study to determine if differences in perception towards the Web-based instruction program occurred between males and females. They found that there was no significant gender difference towards the Web-based instruction program in their study. Furthermore, Hong (2002) investigated the relationships between a number of student’s individual differences (prior computer experience, gender, age, scholastic aptitude and learning styles) and their perceptions of a Web-based course. The subjects consisted of 26 students and the results demonstrated that gender was not significantly related to student’s perceptions. A similar result was found in an earlier study by Ory, Bullock, and Burnaska (1997), who examined male and female student use of, and attitudes about, asynchronous learning networks. The study was conducted with 2151 students and the authors also reported no significant differences between males and females. Although some studies show that there is no gender difference in Web-based interaction, the majority of studies indicate that gender is an influential variable. This implies that males and females might need different levels of support when they interact with the Web. As indicated by Ford et al. (2001), gender is a relatively fixed variable, thus it requires adaptability from a system perspective, suggesting that it is important that Web-based applications should be developed to support adaptation to gender. 4. Prior knowledge User’s prior knowledge includes system experience and domain knowledge. The former refers to user’s knowledge of the system being used whereas the latter refers to user’s understanding of the content area (Lazonder, 2000). Regarding system experience, Shih, Muñoz, and Sánchez (2006) analyzed the influence of previous system experience on student’s performance in a Web-based course. 120 students participated in the Web-based course, and the authors found that the participants with more experience in the use of Internet tools used less time to organize their work and visited fewer pages in each session. Regarding domain knowledge, White, Dumais, and Teevan (2008) compared the search strategies of domain experts with those of domain non-experts through analysis of over 500 thousand interaction logs. The results showed that experts issued longer queries than non-experts and experts also used many more technical query terms than nonexperts. Regardless of system experience or domain knowledge, a growing body of research has found that low prior knowledge users and high prior knowledge users show different levels of familiarity and have different requirements, which are summarized in Table 2. Such differences are particularly obvious in Web-based instruction and Internet searching. The subsections below discuss their details. Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; No. of Pages 9 4 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx Table 2 Low prior knowledge vs. high prior knowledge (adapted from 7). Familiarity Requirements Low prior knowledge Applying little specialised training to use the system. They use the interface that supports the primary functions. Such users need an orderly structure, visible landmarks, reversibility, and safety during the processes of interacting with computer systems. High prior knowledge Possessing the capability to use most of the system’s features. They can get the point quickly and in a straight way. Such users demand shortcuts or macros to speed-repeated tasks and extensive services to satisfy their varied needs. 4.1. Web-based instruction Some research has suggested that individuals with different levels of prior knowledge show preferences for different types of text structure (Calisir & Gurel, 2003) and different kinds of navigation facilities (McDonald & Stevenson, 1998b). 4.1.1. Text structure A number of studies have examined how text structure interacts with user’s prior knowledge; the findings suggest that experts and novices differ in their performance depending on the text structure used in Web-based instruction. For example, McDonald and Stevenson (1998a) examined the effects of text structure and prior knowledge on navigation performance. Three types of text structure – hierarchical, non-linear, and mixed (hierarchical structure with cross referential links) – were investigated using 30 university students as the sample. The results showed that the performance of knowledgeable participants was better than that of non-knowledgeable participants, as they had a better conception of the subject matter than non-knowledgeable participants. The results also showed that non-knowledgeable participants performed better in both browsing and navigating in the mixed structure condition than in the non-linear structure condition. In a similar vein, Calisir and Gurel (2003) also investigated the interaction of three types of text structure – linear, hierarchical and mixed (hierarchical structure with cross referential links) – in relation to the prior knowledge of users. The same sample size, 30 participants with half being classified as knowledgeable and half as non-knowledgeable, was used in their study. However, in contrast to the study by McDonald and Stevenson (1998a), they examined the influence of text structure and prior knowledge on learning performance, rather than on navigation performance. The findings suggest that a hierarchical structure is most appropriate for non-knowledgeable subjects, probably because this structure provides a clear insight into the organizational framework of the subject content. A recent study by Amadieu, Tricot, and MarinéDo (2005) obtained similar results. They investigated the effects of prior knowledge on reading and comprehension with 55 psychology students. Three types of structure were provided: hierarchical; network; and linear. The results indicated that low prior knowledge learners demonstrated better performance in the hierarchical structure, whereas the hierarchical structure seemed to obstruct the domain representation for high prior knowledge learners. In addition to learning performance, text structure also has effects on learning perception. Mitchell, Chen, and Macredie (2005) examined how students reacted to Web-based instruction with 74 undergraduate students. They found that students with more system experience are less likely to struggle with the non-linear interaction whereas those with less system experience showed opposite responses. In summary, these findings suggest that experts and novices differ in their performance depending on the text structure used and that it is necessary to take user’s prior knowledge into consideration when designing effective text structure for Web-based instruction. Experts profit most from an instruction system that provides flexible paths whereas novices seem to benefit more from a well-structured instruction system. This may be explained by the fact that experts have acquired a great deal of content knowledge so they are more able to impose structure on the content. Conversely, novices lack significant domain knowledge; as such, they prefer text structures that may compensate for their lack of a conceptual structure of the domain. A hierarchical structure has been suggested as being most appropriate for novices (DeStefano & LeFevre, 2007) as it presents a conceptual structure of the material that helps users to identify the relationships among different topics. By doing so, users can organize their own knowledge and decide the navigation paths by themselves. 4.1.2. Navigation facilities Having discussed text structure, it is important to consider how the text is navigated. Most current Web-based instruction applications provide a range of navigation facilities to allow users to employ multiple approaches to support their learning. Of these, hierarchical maps and alphabetical indices are most commonly used in Web-based instruction; each of them provides different functions in relation to information access. The characteristics of the different navigation facilities may influence how users develop their learning strategies, making navigation support a critical issue. When considering the relationships between learning strategies and navigation facilities, student’s prior knowledge is an important factor in determining whether a particular navigation facility is likely to be useful. In fact, research suggests that a specific navigation facility is unlikely to be useful to a wide variety of users (e.g., Chen & Macredie, 2004; Ford & Chen, 2000). A number of empirical studies have found that high and low prior knowledge users benefit from different types of navigation facilities. Farrell and Moore (2001) investigated whether the use of different navigation facilities (linear, main menu and search engine) influence user’s achievement and attitude. 146 eighth-grade students were placed into three groups based on their knowledge levels (low, middle, and high) with the results indicating that high-knowledge users commonly tended to use search engines to locate specific topics. Conversely, low-knowledge users seem to benefit from hierarchical maps, which can facilitate the integration of individual topics. Furthermore, McDonald and Stevenson (1998b) examined the effectiveness of navigation facilities and domain expertise in relation to navigation performance. Three conditions were used hierarchical map, contents list and hypertext only (no navigation facility). Of the 36 participants, half were classified as knowledgeable and half as non-knowledgeable based on the results of individual tests. One of the findings showed that nonknowledgeable subjects performed better in the hierarchical map condition than in the contents list condition. Similar results were obtained from another study by Potelle and Rouet (2003), who investigated the influences of navigation facilities on student’s comprehension. There were three versions of the system, which organized information with different navigation facilities: a hierarchical map; a network map; and an alphabetic list. 47 students with different levels of prior knowledge took part in the experiment and were assigned to use one of the three versions. The results showed that the hierarchical map improved comprehension for the lowknowledge participants at the global level. Another recent study by Minetou, Chen, and Liu (2008) obtained similar results. They conducted two empirical studies to investigate how student’s prior knowledge affected their use of navigation facilities. 65 learners participated in Study One and 69 learners in Study Two. The findings of both studies show that hierarchical maps were favored by users with low prior knowledge. A possible explanation for these Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; No. of Pages 9 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx findings is that the map not only reveals the document structure (i.e., the physical arrangement of a document), but also reflects the conceptual structure (i.e., the relationships between different concepts). In other words, the hierarchical map can help non-knowledgeable learners to incorporate the document structure into the conceptual structure, so it is useful for them to integrate their knowledge (Nilsson & Mayer, 2002). The results of the studies discussed in this section suggest that students with different levels of prior knowledge benefit from different navigation facilities. Research suggests that structured navigation facilities, such as hierarchal maps and structural overviews, are most helpful for novices, as they help them to overcome their lack of conceptual structure of the domain. As indicated by Nilsson and Mayer (2002), hierarchal maps, which provide learners with structural cues between concepts and as such provide a global structure, can help learners to integrate their knowledge. However, such navigational facilities may make the users pay less attention to the local structure of the content, in turn limiting their understanding (Hofman & van Oostendorp, 1999). This suggests that there is a need to provide less-knowledgeable users with navigational facilities that present both global structure and local structure of the content. The global structure aims to help the users to find the relevant information and reduce disorientation while the local structure focuses their attention, with the aim of improving their deep understanding of a subject. 4.2. Internet searching In addition to Web-based instruction, several studies also argue that prior knowledge plays a substantial role in Internet searching, which covers three aspects: search strategies; search performance; and search perception. Regarding search strategies, Tabatabai and Luconi (1998) investigated different strategies used by three experts and three novices. The results showed that experts used more keywords while novices used the ‘Back’ key more often; used fewer search engines; and missed some highly relevant sites. Another study by Tabatabai and Shore (2005) compared search strategies used by 10 experts; nine intermediates and 10 novices. They found that novices used significantly fewer meta-cognitive strategies than intermediates or experts; and that experts spent more of their time in using cognitive strategies than the other two groups of users. The other recent study by Thatcher (2008) investigated relationships between Web experience and cognitive search strategies. 80 participants took part in their study; with the results showing that participants with higher levels of Web experience were more likely to use ‘parallel player’; ‘parallel huband-spoke’; ‘known address search domain’ and ‘known address’ strategies. Conversely; participants with lower levels of Web experience were more likely to use ‘virtual tourist’; ‘link-dependent’; ‘to-the-point’; ‘sequential player’; ‘search engine narrowing’; and ‘broad first’ strategies. Regarding search performance, a study by Aula and Nordhausen (2006) examined how users locate information with search engines. 22 participants performed three fact-finding tasks and two broader tasks. The goal of each fact-finding task was to find one specific answer to a simple question while the broader tasks required the participants to find several documents that would satisfy the task. The results indicated that no significant differences were noted between experts and novices regarding the fact-finding tasks but that experts completed the two broader tasks in significantly less time than novices. Additionally, an earlier study by Lazonder, Biemans, and Wopereis (2000) compared differences between novices and experts in searching information on the Web. 25 students were observed while performing search tasks; the results showed that the experts needed fewer actions and less time to find relevant Web sites. The other early study by Höscher and 5 Table 3 Field Dependence vs. Field Independence (adapted from Witkin et al., 1977). Field Dependent users Field Independent users They are externally directed and are easily influenced by salient features. They experience surroundings in a relatively global fashion and struggle with individual elements. They are more likely to accept ideas as presented. They are internally directed and process information with their own structure. They experience surroundings analytically and are good with problems that require taking elements out of their whole context. They are more likely to accept ideas only strengthened through analysis. Strube (2000) investigated Web searching of Internet Experts and ‘Newbies’ with 24 participants in the field of economics and found that people with considerable background knowledge about the domain spent significantly less time reading a document in that domain. Regarding search perception, Ahmed, McKnight, and Oppenheim (2004) examined how users perceived the Web of Science interface, through a sample of 22 participants. The results from the questionnaire showed that the novice group was significantly more satisfied with the interface than the experienced group. Furthermore, another study by Yang, Tsao, Lay, Chen, and Liou (2008) used a questionnaire to measure the Internet self-efficacy, language self-efficacy, foreign language classroom anxiety, language experience, and intention to use commercial Web sites of 418 participants. The results indicated that prior non-native language experience had a positive effect on intention to use non-native language commercial Web sites. A recent study by Park, Roman, Lee, and Chung (2009) investigated the factors that influenced people’s adoption and use of a digital library system with the Technology Acceptance Model (TAM). Data were collected from 16 institutions in developing countries and 1082 surveys were analyzed. The results revealed that experience in computer use and domain knowledge had positive effects on the perceived ease of use of the digital library system. The studies presented in this section reinforce the findings that users with different levels of prior knowledge tend to use different approaches to process information. Such findings should be incorporated into the development of personalized Web-based instruction programs and Internet searching environments so that the needs and preferences of both experts and novices can be met. 5. Cognitive styles Like prior knowledge, cognitive style also plays an essential role in Web-based instruction and Internet searching. Within the area of cognitive styles, Field Dependence has emerged as one of the most widely studied human factors in relation to these two types of Web-based application. Field Dependence refers to the degree to which a user’s perception or comprehension of information is influenced by the surrounding perceptual or contextual field (Jonassen & Grabowski, 1993). The key issue in Field Dependence lies within the differences between Field Dependent and Field Independent users, which are presented in Table 3. 5.1. Web-based instruction Several studies have investigated the relationships between the degree of Field Dependence and student’s learning performance and learning preferences with respect to Web-based instruction. 5.1.1. Learning performance A number of studies have shown that the learning performance of Field Independent and Field Dependent students is associated Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; 6 No. of Pages 9 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx with the design of Web-based instruction material. Ford and Chen (2001), for example, investigated the effects of cognitive style on learning performance in different versions (breadth-first and depth-first) of a Web-based instruction system, with student’s cognitive styles determined using Riding’s Cognitive Style Analysis (CSA, Riding, 1991). 73 students participated in their study. Ford and Chen (2000) found that Field Dependent learners in the breadth-first version performed better than those in the depth-first version. Conversely, Field Independent students performed better in the depth-first version than those in the breadth-first version. Another study by Parkinson and Redmond (2002) investigated the impacts of three treatments – Text, CD-ROM and Internet site – and cognitive style on learning performance. Their study included 47 participants. Both Group Embedded Figures Test (GEFT, Witkin, Moore, Goodenough, & Cox, 1977) and the CSA were applied to identify the participant’s cognitive styles. The results from the GEFT showed that Field Independent students performed better in the Internet treatment than in the CD-ROM and Text treatments. The other study by Graff (2003) used a sample of 50 students and applied the CSA to determine an individual’s cognitive style, examining the relationship between cognitive style and performance in two versions of the system – long-page and short-page versions. The study’s findings indicated that Field Independent students achieved superior scores in the long-page condition whereas Field Dependent students were superior in the short-page condition. A more recent study by Umar and Maswan (2007) examined two versions of Web-based instruction – guided inquiry and tutorial. The GEFT was applied to measure the cognitive styles of 141 high-school students, with the study’s results showing that the Field Independent group in the guided inquiry version performed significantly better than those in the tutorial group. The studies mentioned so far in this section suggest a strong relationship between student’s learning performance and their cognitive style, but a number of studies have found no differences between Field Independent and Field Dependent individuals in this context. For example, a study by Shih and Gamon (2002) analyzed the relationships between student achievement, learning strategies, learning patterns, learning styles and student characteristics. There were 99 participants, whose cognitive styles were determined by the GEFT. The study’s results indicated that no significant differences were found for learning achievement between Field Independent and Field Dependent students. Another study, by Altun and Cakan (2006), examined the correlations between cognitive styles and academic achievement. In this study, the GEFT was used to identify the cognitive styles of the participants, which included 130 teacher trainees, and, like Shih and Gamon (2002), they found that there was no significant relationship between cognitive styles and academic achievement. 5.1.2. Learning preferences Learning preferences are the choices that learners show in certain types of learning environments and activities (Lee, McCool, & Napieralski, 2000), such as the selection of certain navigation paths or facilities. Several studies provide evidence that Field Independent and Field Dependent students show different learning preferences. For instance, Lee, Cheng, Rai, and Depickere (2005) investigated student’s learning preferences in WebCT (a Web-based instruction environment). Their sample comprised 217 students from Murdoch University and the findings indicated that non-linear learning was the primary dimension that reflects student’s cognitive styles. Field Dependent students were accustomed to linear learning whereas Field Independent students tended to have a preference for non-linear learning. These findings reflect those of Chen and Macredie (2004), who examined student’s learning preferences by conducting a survey of 61 Master students whose cognitive styles were determined using Riding’s CSA. The results showed that Field Independent students appreciated the fact that Web-based instruction programs allowed them to study topics in any order, whereas Field Dependent students felt confused over which options they should choose. In addition to non-linear learning, Field Independent and Field Dependent students also demonstrate different learning preferences for content presentation and navigation tools. Regarding content presentation, Lu, Yu, and Liu (2003) investigated student’s learning patterns and learning styles in a WebCT course. 76 graduate students participated in their study and the GEFT was used to classify the participant’s cognitive styles. Their study found that Field Dependent subjects made more use, more often of the teaching notes and other class resources than Field Independent subjects. Regarding navigation tools, Ford and Chen (2000) examined the effects of cognitive styles on student’s selection of navigation tools, with 65 students taking part in their study. Riding’s CSA was applied to identify student’s cognitive styles. They found that Field Independent students preferred to use an alphabetical index to locate specific information while Field Dependent students tended to use a hierarchical map to get a global picture of the subject content. Another recent study, by Lin and Chen (2008), showed similar results. 101 individuals participated in their study and the participant’s cognitive styles were identified by the CSA. The study’s results showed that Field Independent individuals favored using an alphabetical index and a search engine whereas Field Dependent individuals preferred to use a map. 5.2. Internet searching Previous research also indicates that there are relationships between Field Dependence and Internet Searching. For example, Wang, Hawk, and Tenopir (2000) studied user’s interactions with Web resources, using 24 graduate students as participants. The GEFT was used to identify the participant’s cognitive styles and participants were asked to find answers from the Web for two search questions. The results showed that there were a statistically significant correlation between GEFT scores and the time spent for searching and the URLs visited. The participants with the higher GEFT scores conducted the longer search sessions, and visited more URLs. In contrast, the participants with the lower GEFT scores had the shorter search sessions. A relevant study is that of Palmquist and Kim (2000), which investigated the effects of cognitive styles and online database search experience on Web search performance. The GEFT was administered to identify the cognitive styles of 48 undergraduate college students. The study’s results showed that Field Dependent novices frequently made greater use of embedded links than other users. Additionally, Kim, Yun, and Kim (2004) compared search strategies of different cognitive style groups with 50 participants. Their results showed that the Field Dependent group demonstrated significantly more repeated search attempts and total search attempts and also made more use of search operators. Unlike the aforementioned studies which identified the user’s cognitive styles with the GEFT, other studies selected the CSA to measure cognitive style. For example, a study by Ford, Miller, and Moss (2005) sought to discover the effects of human individual differences on Web search strategies. Their sample consisted of 250 Master students and the study’s results indicate that there is a link between low levels of Boolean searching (where individual search terms are combined using operators such as AND and OR) and Field Independence, and a link between high levels of Boolean searching and Field Dependence. Furthermore, a more recent study by FriasMartinez, Chen, and Liu (2008) examined how users behaved in a digital library with 50 individuals, and their results showed that Field Dependent users frequently used ‘back’/‘forward’ buttons, whereas Field Independent users had a notable use of advanced Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 ARTICLE IN PRESS G Model JJIM-966; No. of Pages 9 S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx Table 4 Summary of the findings of the empirical studies. Section Human factor Summary 3 Gender differences 4 Prior knowledge Some studies found that there are no gender differences in navigation patterns and attitudes toward Web-based interaction but the majority of studies indicated that females and males showed different behavior and demonstrated different perceptions and attitudes. In particular, females encountered more disorientation problems and had more negative attitudes than males. Regarding Web-based instruction, the studies suggest that flexible paths are more beneficial to experts while structured content is more useful to novices, who can particularly get more benefits from a hierarchical map. Regarding Internet searching, experts and novices used different types of search strategies, spent different amount of time in doing broader tasks and reading documents and show different perceptions. Regarding Web-based instruction, the studies suggest that Field Dependent and Field Independent users demonstrate different learning preferences but results remain inconclusive in terms of learning performance. Regarding Internet searching„ the studies suggest that Field Dependent and Field Independent users prefer to use different search strategies, especially in terms of the use of embedded links and Boolean searching. 5 Cognitive styles search. To summarize the studies presented in Section 5, Field Dependent and Field Independent users behave differently in Web-based instruction and Internet searching. Nevertheless, as the review in Section 5.1 indicates, evidence of whether Field Dependence has an effect on learning performance is still inconclusive, suggesting the need for further research to seek to clarify this issue. Sections 3–5 have reviewed the empirical studies that examined how human factors affected user’s interactions with the Web, with an emphasis on gender differences, prior knowledge and cognitive styles. Table 4 presents a summary of the findings of these empirical studies. 6. Limitations and future trends The studies presented in the last three sections demonstrate that many researchers have made serious efforts to investigate the relationships between human factors and Web-based interaction. Their contributions are important but there are still some limitations with the current research, of which the research and development communities need to be aware and which should be investigated through future research. These limitations are discussed below. 6.1. Inconsistent results As the discussion in Sections 3–5 demonstrates, the results reported in existing studies are not fully consistent. For example, there are contradictory findings as to whether gender differences influence user’s attitudes and perceptions towards Web-based interaction and whether cognitive styles affect user’s learning performance. Further empirical research is needed to identify more 7 conclusively the effects of these human factors on Web-based interaction and to explain variations in the results from studies in the area. The results should help to reinforce the findings of some of the existing studies and better guide the development and evaluation of Web-based applications. In addition to conducting further empirical studies to verify the results, researchers in the field also need to investigate the research instruments that they use. In the studies reported in this paper, a wide range of research instruments were employed to gather evidence on core user ‘characteristics’, leading to problems of comparability of findings when seeking to look across different studies. In particular, researchers have used different types of questionnaires to identify perceptions and attitudes. In the future, there is a need to examine the reliability and validity of such questionnaires and it may be useful to develop a standard template for the questionnaires so that the accuracy of the results can be improved. 6.2. Traditional statistics Existing studies mainly analyze data with traditional statistical approaches, including parametric and non-parametric analyses. These approaches aim to indicate trends related to user’s preferences. However, expanding the repertoire of techniques for data analysis used in this field to include advanced intelligent technologies, such as data mining, will offer researchers different insights into Web-based interaction. The main difference between traditional statistical approaches and data mining lies in the aim that is sought: the former is used to verify existing knowledge in order to prove a known relationship (Moss & Atre, 2003); while the latter is aimed at finding unexpected relationships (Wang, Ree, & Liao, 2002). As opposed to traditional experiments designed to verify a priori hypotheses with statistical analyses, data mining uses the data itself to uncover relationships and patterns. By doing so, hidden relationships and patterns can be discovered and predictive rules can be generated (Gargano & Ragged, 1999). Recent studies (such as those of Chen & Liu, 2008; Cho, Kim, & Kim, 2003) suggest that data mining is a useful tool for analyzing Web usage data because it can discover regularities and patterns hidden in data. Among these studies, Chen and Liu (2008) particularly have highlighted that data mining can discover some findings that cannot be found using traditional statistical analysis. More specifically, data mining offers future research the potential to analyze how human factors influence Web-based interaction and we would suggest that this is embraced by the research community to add a new methodological dimension to their studies. 6.3. Lack of mixed methods The literature suggests that quantitative methods are favored when seeking to find the overall effectiveness of the systems being studies (Legree, Gillis, & Orey, 1993) whereas qualitative methods are more often used to provide information in relation to personal interaction and perception (Murray, 1993). It is clear that quantitative and qualitative methods have different strengths and weaknesses. As such, a research design should combine instances of both types of method in order to overcome the individual weaknesses and biases of each method (Rossman & Wilson, 1985). However, existing studies mainly use quantitative methods and a paucity of research uses qualitative methods or mixes quantitative and qualitative methods. The isolated use of the quantitative methods may be artificial and shallow and lead to the loss of large and valuable sources of information (Kaplan & Maxwell, 1994). Methods should be used in a complementary way; as implied by Isaacs and Tang (1994, p. 27), objective quantitative results, such as frequency counts, can identify reliable patterns in the data which confirm or deny theories about user behavior whereas sub- Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009 G Model JJIM-966; No. of Pages 9 8 ARTICLE IN PRESS S.Y. Chen, R. Macredie / International Journal of Information Management xxx (2010) xxx–xxx jective qualitative data informs as to how and why the behavior takes shape. Future research in the area should consider combining quantitative and qualitative methods into coherent and balanced research designs which can, in turn, offer a more complete understanding of the relationships between human factors and Web-based interaction. Acknowledgement 6.4. Limited applications Ahmed, S. M. Z., McKnight, C., & Oppenheim, C. (2004). A study of users’ performance and satisfaction with the web of science IR interface. Journal of Information Science, 30(5), 459–468. Amadieu, F., Tricot, A., & MarinéDo, C. (2005). Hypertexts favor comprehension and learning for experts? The effects of prior knowledge diversity. In Paper presented at ICLEPS conference. 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Learners’ perceptions toward the web-based distance learning activities/assignments portion of an undergraduate hybrid As indicated in Section 1, the Web includes a wealth of information and has been used to deliver a variety of applications, including online learning, search engines, digital libraries, Internet banking, and electronic shopping. However, the majority of existing empirical studies focus on Web-based instruction or Internet searching, leaving other types of Web-based applications relatively less explored and understood. Among these applications, online shopping is becoming increasingly popular with consumers. In traditional shopping, the interaction between consumers and the physical shop determines the impression that the consumers have of the shop. However, in online shopping the Web site may be thought of as a ‘window’ through which users have their initial interaction with the shop (Zhang & von Dran, 2002) and the design of which presents the users with a comprehensive image of the shop (Tung, 2001). Yet, users may have different preferences for the design of Web sites and, as such, human factors form important considerations in the design of Web sites for online shopping. 7. Conclusions The studies reviewed in this paper suggest that human factors play an important role in the development of Web-based applications and users with different cognitive styles, levels of prior knowledge and gender use different approaches in their interactions with the Web. Therefore, these human factors must be taken into account in the development of Web-based applications. In other words, different perspectives of Web design should be available for potential matching with various user’s characteristics and preferences. If Web-based applications can be aware of such differences, they may be able to offer appropriate support to each individual, possibly resulting in the improvement of user performance and user perception. In this paper, we have given an overview of the influences of human factors on Web-based interaction. This overview, which provides additional insight into information management and information technology, is useful in the development of Web-based applications. Interested readers may further investigate the details through the references listed in this paper. Even where we see problems or shortcomings in the design of the studies and the applications considered, understanding their scope and limitations can be very useful in avoiding similar problems, whether in the design of subsequent studies or of Web-based applications themselves. Although the focus in this paper has been on three key human factors – gender differences, prior knowledge and cognitive styles – it should be noted that other human factors also affect user’s interaction with the Web; these include affective factors, cultural background and age differences. An important direction for future research is the investigation of this wider set of factors and the identification of the major design features which interact with each. This might lead to the development of concrete criteria for the evaluation of Web-based applications in relation to this expanded set of human factors issues and guidelines to support the development of Web-based applications. The eventual aim is to enhance the function and performance of Web-based applications by matching them to the needs and preferences of each individual. The work presented in this paper is funded by National Science Council, Taiwan (NSC 98 - 2511 - S - 008 - 012 - MY3). 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(1977). Field-dependent and field independent cognitive styles and their educational implications. Review of Educational Research, 47(1), 1–64. Young, B. L. (2000). Gender differences in student attitudes towards computers. Journal of Research on Computing in Education, 33(2), 204–213. Yang, H. J., Tsao, W. Y., Lay, Y. L., Chen, C., & Liou, Y. C. (2008). Prior language experience and language anxiety as predictors for non-native language commercial website use intention. International Journal of Human Computer Studies, doi:10.1016/j.ijhcs.2008.04.006 Zhang, P., & von Dran, G. M. (2002). User expectations and rankings of quality factors in different web site domains. International Journal of Electronic Commerce, 6(2), 9–33. Sherry Y. Chen is currently a Professor at Graduate Institute of Network Learning Technology, National Central University, Taiwan and a Reader in the Department of Information Systems and Computing at Brunel University, UK. She obtained her PhD from Department of Information Studies, University of Sheffield, UK in 2000. Her current research interests include human–computer interaction, data mining, digital libraries, and educational technology. She has almost 100 publications in these areas. She is the Associate Editor of Online Information Review and International Journal of Digital Library Systems. In addition, she acts as a member of the editorial board of ten computing journals. Robert D. Macredie is Professor of Interactive Systems in the Department of Information Systems and Computing at Brunel University, UK. He has worked with a range of organizations, ranging from large, blue-chip companies, through small businesses, to government agencies. Robert’s key interest lies in the way in which people and organizations use technology, and his research aims to determine how work can be more effectively undertaken by improving the way that we understand how people and technology interact in organizational (and social) settings. He has undertaken work on a range of issues associated with people, technology and organizations and has over 180 published research contributions in these areas. Please cite this article in press as: Chen, S. Y., & Macredie, R. Web-based interaction: A review of three important human factors. International Journal of Information Management (2010), doi:10.1016/j.ijinfomgt.2010.02.009
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