The University of Toledo The University of Toledo Digital Repository Theses and Dissertations 2015 Perceived risk and expected benefits impact social class differences in health risk behavior Heather M. Haught University of Toledo Follow this and additional works at: http://utdr.utoledo.edu/theses-dissertations Recommended Citation Haught, Heather M., "Perceived risk and expected benefits impact social class differences in health risk behavior" (2015). Theses and Dissertations. 1836. http://utdr.utoledo.edu/theses-dissertations/1836 This Dissertation is brought to you for free and open access by The University of Toledo Digital Repository. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of The University of Toledo Digital Repository. For more information, please see the repository's About page. A Dissertation entitled Perceived Risk and Expected Benefits Impact Social Class Differences in Health Risk Behavior by Heather M. Haught Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Doctor of Philosophy Degree in Experimental Psychology _________________________________________ Jason Rose, Ph.D., Committee Chair _________________________________________ Andrew Geers, Ph.D., Committee Member _________________________________________ John Jasper, Ph.D., Committee Member _________________________________________ John Elhai, Ph.D., Committee Member _______________________________________ Deborah Boardly, Ph.D., Committee Member _________________________________________ Patricia R. Komuniecki, PhD, Dean College of Graduate Studies The University of Toledo May 2015 Copyright 2015, Heather M. Haught This document is copyrighted material. Under copyright law, no parts of this document may be reproduced without the expressed permission of the author. An Abstract of Perceived Risk and Expected Benefits Impact Social Class Differences in Health Risk Behavior by Heather M. Haught Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Doctor of Philosophy Degree in Experimental Psychology The University of Toledo May 2015 People in lower social classes die younger and suffer a greater burden of disease than those in upper social classes. This pattern, referred to as the social gradient, is partly attributable to the fact that people in lower social classes engage in more health risk behavior. The current studies are the first to examine whether perceived risk and expected benefits mediate the relationship between social class and health risk behavior and if the nature of this relationship differs depending upon the category of health risk behavior – those that derive risk from action vs. inaction. In Study 1, adults recruited from Amazon’s Mechanical Turk reported how frequently they engage in a variety of health risk behaviors, indicated their perceived risk and expected benefits for each health behavior, and provided socio-demographic information (e.g., social class indicators, sex, and race). Results revealed that people in lower social classes perceived health risk behaviors to be more risky and have fewer benefits than people in upper social classes. Additionally, perceived risk was a stronger predictor of inactive health risk behaviors whereas expected benefits was a stronger predictor of active health risk behaviors. In Study 2, we manipulated participants’ perceived social status by shifting the reference iii point that participants used to make subjective social status judgments and examined whether this manipulation affected perceived risk and expected benefits in a manner similar to that expected in Study 1. Results did not replicate those obtained in Study 1. These findings advance our understanding of the pathways by which social class affects health risk behavior and inform strategies aimed at reducing health risk behavior among lower social classes. iv Table of Contents Abstract iii Table of Contents v List of Tables viii List of Figures ix I. Introduction 1 A. Perceived Risk & Expected Benefits as Determinants of Risk Behavior 2 B. Measures of Social Class 5 C. Social Class Differences in Perceived Risk & Expected Benefits 6 D. Overview of Study 1 8 II. Study 1 Method 11 A. Participants & Overview of Procedure 11 B. Sociodemographic Questions 11 C. Health Risk Behavior 13 a. Active Risk 13 b. Inactive Risk 13 D. Perceived Risk & Expected Benefits III. Study 1 Results 15 16 A. Social Class Differences in Perceived Risk & Expected Benefits 16 B. Mediation & Active vs. Inactive Risk Behaviors 18 C. Model Specification 19 a. Hypothesized Model 19 b. Alternative Model 20 v D. Parameter Estimates & Fit Indices 21 E. Model Modification a. Hypothesized Model 22 b. Alternative Model 25 F. Model Performance 26 G. Summary of Findings 31 IV. Overview of Study 2 32 V. Study 2 Method 34 A. Participants & Overview of Procedure 34 B. SSS Manipulation 34 C. Perceived Risk & Expected Benefits 35 D. Socio-demographic Questions 35 VI. Study 2 Results 36 A. Manipulation Check 36 B. Primary Analyses 36 C. Exploratory Analyses 37 VII. Discussion 40 A. Social Class Differences in Perceived Risk & Expected Benefits 40 B. Perceived Risk & Expected Benefits as Mediators 43 C. Perceived Risk & Expected Benefits Predict Active & Inactive Risk Behaviors 44 D. Sex Differences in Risk Behavior 45 E. Limitations 46 vi F. Basic & Applied Contributions 48 References 50 Appendices A. SSS Scale 58 B. Health Behavior Questionnaire 59 C. Perceived Risk & Expected Benefits Questionnaire 61 vii List of Tables Table 2-1 Sample Characteristics. ...................................................................................12 Table 2-2 Correlations Among Sociodemographic Variables. .......................................12 Table 2-3 Correlations Among Health Risk Behaviors. ..................................................14 Table 2-4 Descriptive Statistics for Health Risk Behavior, Perceived Risk, & Expected Benefits. ……………………………………………………………………. 14 Table 2-5 Correlations Between Health Risk Behavior, Perceived Risk, & Expected Benefits………………………………………………………………………15 Table 3-1 Descriptive Statistics for the Class X Judgment Interaction by Indicator (Study 1)……………………………………………………………………………. 17 Table 3-2 Descriptive Statistics for the Judgment X Behavior Interaction (Study 1)…..18 Table 3-3 Fit indices for Social Class Latent Factor (Study 1)…………………………22 Table 3-4 Correlation Between Perceived Risk, Expected Benefits, & Sociodemographic Variables……………………………………………………………………..23 Table 3-5 Fit indices for the (Modified) Hypothesized & Alternative Models………..27 Table 3-6 Indirect Effects for the (Modified) Hypothesized Model……………………29 Table 3-7 Descriptive Statistics for Active & Inactive Health Risk Behavior by Indicator……………………………………………………………………..30 Table 6-1 Descriptive Statistics for the Judgment X Behavior Interaction (Study 2)…37 viii List of Figures Figure 1-1 Hypothesized Model. ........................................................................................9 Figure 1-2 Alternative Model. ..........................................................................................10 Figure 3-1 Social Class X Judgment Interaction (Study 1). .............................................17 Figure 3-2 Behavior X Judgment Interaction (Study 1)…………………………………18 Figure 3-3 Modified Hypothesized Model……………………………………………....22 Figure 3-4 Loading Plot for Health Risk Behaviors (Study 1)…………………………..24 Figure 3-5 Modified Alternative Model…………………………………………………26 Figure 3-6 Path Estimates for the Modified Hypothesized Model………………………28 Figure 3-7 Path Estimates for the Modified Alternative Model…………………………28 Figure 6-1 Behavior X Judgment Interaction (Study 2)…………………………………37 Figure 6-2 Class X Condition X Judgment Interaction (Study 2)……………………….39 ix Chapter One Introduction The link between social class and health is well-established. People in lower social classes die younger and are in poorer health than those in upper social classes (Adler & Rehkopf, 2008; Isaacs, 2004). This pattern, referred to as the social gradient, has been documented for a range of health outcomes, but is strongest for cardiovascular disease, diabetes, and chronic respiratory diseases (Adler & Snibbe, 2003). Evidence indicates that class-based health disparities are widening in the United States and Europe (Elo, 2009; Krostad, Kunst, & Westin, 2002; Marmot, Kogevinas, & Elston, 1987; Preston & Elo, 1995) and persist even in countries with universal healthcare (Cohen, Doyle, & Baum, 2006). Consequently, the reduction of these disparities has become a primary goal of public health practice and research (WHO, 2005). Although complex, the link between social class and health is partly explained by differences in health risk behavior. Compared to people in upper social classes, those in lower social classes are more likely to smoke and drink heavily and are less likely to exercise, maintain a healthy diet, and seek out or adhere to medical treatments (Barr, Somers, Speizer, & Camargo, 2002; Darmon & Drewnowski, 2008; Goldman & Smith, 2002; Haught & Rose, 2014; Lynch, Kaplan, & Salonen, 1997). Research in this area has predominately focused on understanding how characteristics of lower social class environments shape health risk behavior. For example, studies have shown that people who live in neighborhoods with high crime rates, unkempt sidewalks, and few supermarkets are less likely to exercise regularly or maintain a healthy diet than those 1 who live in neighborhoods with low crime rates, quality sidewalks, and many supermarkets (Caraher, Dixon, Lang, & Carr-Hill, 1998; Kwarteng, Schulz, Mentz, Zenk, & Opperman, 2013; Moore, Glick, Romanowski, & Quinley, 1996; Powell, Slater, & Chaloupka, 2004; Virtanen, Kivimäki, Kouvonen, Elovainio, Linna, et al., 2007). However, environmental factors cannot fully account for social class differences in health risk behavior (Adler, Boyce, Chesney, Cohen, Folkman, Kahn, & Syme, 1994). Consequently, researchers have suggested that psychological factors may also be important for understanding how social class affects health risk behavior (Adler & Snibbe, 2003; Stephens, Markus, & Fryberg, 2012). Consistent with this idea, research has demonstrated that how people perceive risk and associated benefits directly impacts health risk behavior. For example, Haefner and Kirscht (1970) showed that manipulating people’s perceived risk of disease (i.e., cancer, heart disease, or tuberculosis) and anticipated benefits of treatment resulted in more frequent doctor visits over an eight month period compared to controls. However, we are unaware of any study that has examined whether perceived risk and expected benefits contribute to the link between social class and health risk behavior. The current studies seek to address this issue. Specifically, we examine whether people’s perceptions of risk and expected benefits mediate the relationship between social class and health risk behavior and if the nature of this effect differs depending upon characteristics of the behavior (active vs. inactive risk). Perceived Risk & Expected Benefits as Determinants of Risk Behavior Risk behavior, in health and other domains, can be conceptualized as a trade-off between the perceived risk and expected benefits of engaging in a behavior (Weber, Blais, & Betz, 2002; Weber & Johnson, 2008; Weber & Milliman, 1997). On a night out, 2 for example, a person may need to decide whether or not to engage in unprotected sex. If he (she) perceives the risk of negative outcomes (e.g., sexually transmitted infection, unwanted pregnancy) to be relatively low and expects that by doing so he (she) will gain desired outcomes (e.g., a passionate experience, social connection), he (she) may choose to engage in unprotected sex. This conceptualization suggests that risk behavior can be motivated by more than simply a person’s propensity for risk (Gullone & Moore, 2000; Zuckerman & Kuhlman 2000). Research on how perceived risk and expected benefits affect risk behavior has been conducted using the Domain-Specific Risk-Taking (DOSPERT) scale (Weber, Blais, & Betz, 2002). The DOSPERT measures risk behavior, perceived risk, and expected benefits in five domains: finance (e.g., betting at a race track), social interaction (e.g., opposing a friend’s viewpoint), health and safety (e.g., not wearing a seatbelt), ethics (e.g., cheating on an exam), and recreation (e.g., skydiving). Findings indicate that, although related, perceived risk and expected benefits are independent predictors of risk behavior (Foster, Shenesey, & Goff, 2009; Harris, Jenkins, & Glaser, 2006) and that expected benefits may be a stronger predictor of risk behavior than perceived risk (Hanoch, Johnson, & Wilke, 2006). Additionally, Weber and colleagues (2002) found that perceived risk and expected benefits were unique predictors of risk behavior in each DOSPERT domain and that expected benefits was a stronger predictor in every domain except finance. Importantly, however, the DOSPERT fails to distinguish between health risk behaviors that derive risk from action vs. inaction. Active health risk behaviors, like substance abuse and reckless driving, involve engaging in an action that threatens a 3 person’s current health status whereas inactive health risk behaviors, like unprotected sex and physical inactivity, involve avoiding an action that protects a person’s current health status. This distinction between action and inaction is prominent throughout the psychological literature and has important implications for risk behavior. For instance, Reinforcement Sensitivity Theory (Gray, 1970), one of the most widely accepted biopsychological theories to date, argues that behavior is motivated by two systems, the Behavioral Inhibition System (BIS) and the Behavioral Activation System (BAS). The BIS is sensitive to punishment and motivates inaction or avoidance whereas the BAS is sensitive to reward and motivates action. Consistent with this idea, Verbruggen, Adams, and Chambers (2012) demonstrated that people who are forced to inhibit a manual response are subsequently less likely to take financial risks than people who are not forced to inhibit a manual response. In addition, Keinan & Bereby-Meyer (2012) recently demonstrated that active and inactive risk behavior are differentially associated with related constructs like sensation-seeking, impulsivity, and procrastination. The DOSPERT is primarily a measure of active risk-taking, suggesting that expected benefits is a stronger predictor of active health risk behaviors than perceived risk. Consistent with this idea, Teese and Bradley (2008) showed that expected benefits is a stronger predictor of reckless driving among adolescents and young adults than perceived risk. Additionally, people who are highly sensitive to reward use drugs and alcohol more frequently and in greater quantities than those who are less sensitive to reward (Genovese & Wallace, 2007; Kynazev, 2010; O’Conner & Colder, 2005; Rose & Mossler, 2013). However, expected benefits does not seem to be a stronger predictor of inactive health risk behaviors than perceived risk. For instance, people with lower levels 4 of perceived risk are less likely to be vaccinated, wear a seatbelt, exercise or obtain cancer screenings than people with higher levels of perceived risk (Brewer, Weinstein, Cuite, & Herrington, 2004; Katapodi, Lee, Facione, & Dodd, 2004; Ouimet, Morton, Noelcke, Williams, Leaf, Preusser, & Hartos, 2008; Stephan, Boiche, Trouilloud, Deroche, & Sarrazin, 2011). Furthermore, Macdonald, Fong, Zanna, and Martineau (2000) demonstrated that manipulating the salience of risks associated with unprotected sex altered safe sex practices among both sober and intoxicated individuals. In light of these findings, we argue that perceived risk and expected benefits may be differentially related to active vs. inactive health risk behaviors such that perceived risk is a stronger predictor of inactive health risk behaviors whereas expected benefits is a stronger predictor of active health risk behaviors. To our knowledge, no study has previously addressed this issue; therefore, clarifying how perceived risk and expected benefits impact active vs. inactive health risk behaviors is one important goal of the current studies. Measures of Social Class Another goal of the current studies is to examine whether perceived risk and expected benefits mediate the relationship between social class and health risk behavior. In the United States, social class is typically measured in terms of income or education, with higher income and more education denoting higher social class (Elo & Preston, 1996; Herd, Goesling, & House, 2007). These variables, referred to as objective social status (OSS) indicators, govern people’s access to specific sets of resources (Haught & Rose, 2014) and are among the most consistent predictors of health among adults and children (Chen, Matthews, & Boyce, 2002; Minkler, Fuller-Thomson, & Guralnik, 2006). 5 Recently, however, research has demonstrated that a person’s perceived social standing, referred to as subjective social status (SSS), is only moderately correlated with OSS indicators (Adler, Epel, Castellazzo, & Ickovics, 2000; Goodman, Adler, Kawachi, Frazier, Huang, & Colditz, 2001) and exerts an independent effect on health (SinghManoux, Adler, & Marmot, 2003). Consistent with this idea, researchers have suggested that SSS may serve as a global measure of social class that accounts for various OSS indicators simultaneously (Singh-Manoux, Marmot, & Adler, 2005; Kraus, Piff, Mendoza-Denton, Rheinschmidt, & Keltner, 2012). Indeed, people report thinking about a number of variables when making SSS judgments including their income, education, occupation, parents’ income during childhood, health, social and ethical responsibility, and future financial situation (Snibbe, Stewart, & Adler, unpublished; Singh-Manoux et al., 2005). In light of these findings, we decided to measure social class using both OSS and SSS indicators. Social Class Differences in Perceived Risk & Expected Benefits Previous research has demonstrated that sociocultural differences in risk behavior are largely accounted for by perceived risk and expected benefits (Weber & Morris, 2010). For instance, Weber and colleagues (2002) found that sex differences in risk behavior were eliminated after controlling for perceived risk and expected benefits in four of the five DOSPERT domains (all except the social interaction domain). In addition, Blais and Weber (2006) showed that English participants engaged in more risk behavior than French participants across the five DOSPERT domains and that this difference was significantly reduced after controlling for perceived risk. 6 These prior findings have primarily been explained in terms of environmental factors (Figner & Weber, 2011; Weber & Morris, 2010). In the financial domain, for example, studies have shown that differences in perceived risk between American and Chinese participants are evident in each culture’s proverbs and are mediated by environmental factors like the number of family and friends that would lend the participant money during financial hardship (i.e., the cushion hypothesis; Hsee & Weber, 1998; Weber & Hsee, 1998; Weber, Hsee, & Sokolowska, 1999). Importantly, social class is tied to the social and physical environments that people inhabit in their daily lives, governing where people live, the jobs they hold, and the kinds of interactions they have with others (Kawachi & Berkman, 2003; Fiske & Markus, 2012). In particular, people in lower social classes tend to live in poor neighborhoods with high crime rates, attend low quality schools, and work in hazardous conditions with low autonomy and control. People in upper social classes, by contrast, tend to live in rich neighborhoods with quality schools, have more non-familial social relationships, possess greater geographic mobility, and hold more autonomy and control at work. Despite marked differences in the environments inhabited by upper vs. lower social classes, we are unaware of any study that has examined social class differences in perceived risk and expected benefits. The current studies are designed to address this issue and determine whether social class differences in perceived risk and expected benefits give rise to social class differences in health risk behavior. We anticipate that 1) people in lower social classes will perceive active and inactive health risk behaviors to be less risky and have more benefits than people in upper social classes; 2) perceived risk and expected benefits will mediate the relationship between social class and health risk behavior; and 3) 7 regardless of social class, people will weigh expected benefits more heavily for active health risk behaviors, but weigh perceived risk more heavily for inactive health risk behaviors. Overview of Study 1 The current studies examine whether perceived risk and expected benefits mediate the relationship between social class and health risk behavior and if the relative contribution of perceived risk vs. expected benefits differs depending upon the category of health risk behavior (active vs. inactive). Study 1was conducted with a sample of U.S. adults in order to obtain a wider range of social class than in traditional undergraduate samples. Participants reported how frequently they engage in a variety of health risk behaviors, indicated their perceived risk and expected benefits for each behavior, and provided socio-demographic information, including standard social class indicators, sex, and race. We expected that people in lower social classes would perceive health risk behaviors to be less risky and have more benefits than people in upper social classes and that perceived risk would be a stronger predictor of inactive health risk behavior whereas expected benefits would be a stronger predictor of active health risk behaviors—among both upper and lower social class individuals. These hypotheses were tested simultaneously using structural equation modeling. The hypothesized model is depicted in Figure 1-1. Sex and race were included in the model because risk-taking differs systematically by sex and because women and minorities are more concentrated in lower social classes (Braveman et al., 2005; Byrne, Miller, & Schafer, 1999). 8 Figure 1-1. Hypothesized Model Additionally, we compared the hypothesized model to an alternative model, which does not differentiate between active and inactive health risk behaviors. This model is depicted in Figure 1-2. In the case that the alternative model is superior, we expect that 1) people in lower social classes perceive health risk behaviors to be less risky and have more benefits than people in upper social classes; 2) perceived risk and expected benefits mediate the relationship between social class and health risk behavior; and 3) regardless of social class and type of behavior (action or inaction), expected benefits is a stronger predictor of health risk behavior than perceived risk. 9 Figure 1-2. Alternative Model 10 Chapter Two Study 1 Method Participants & Overview of Procedure Participants were 339 adults (106 males) recruited from Amazon’s Mechanical Turk (MTurk)—a crowdsourcing online marketplace. The MTurk pool was specified to include adults who reside in the United States and speak English. Research has shown that data obtained from MTurk are at least as reliable as traditional samples and significantly more diverse by age, race, and socioeconomic status than college student samples (Buhrmester, Kwang, & Gosling, 2011). In the current sample, participants ranged in age from 18 to 65 (M=33.25, SD=11.38), more than a quarter were minorities, and had annual household incomes ranging from less than $20,000 to greater than $75,000. Sample characteristics are summarized in Table 2-1. Participants completed each of the four questionnaires discussed below (randomly ordered) and earned $0.10 in exchange for their participation. The study took about 10-15 minutes to complete. Sociodemographic Questions Participants reported their sex (0 = male, 1 = female), and race (recoded as 0 = white, 1 = non-white). Social class was measured using standard indicators including annual household income (1 = <$20,000; 2 = $20,000-$34,999; 3 = $35,000-$49,999; 4 = $50,000-$74,999; 5 = ≥$75,000), highest level of education (1 = less than high school, 2 = high school graduate, 3 = some college, 4 = bachelor’s degree, 5 = postbaccalaureate), and subjective social status (SSS; Goodman, Adler, Kawachi, Frazier, Huang, & Colditz, 2001). SSS was assessed using the MacArthur Scale, which consists of a ladder with 10 rungs, anchored at the top with “those who are best off in society” and 11 Table 2-1. Sample Characteristics % Sex Male Female Race White Non-White Education Less than High School High School/GED Some College Bachelor’s Degree Post-Bach Degree Household Income Less than $20,000 $20,000-$34,999 $35,000-$49,999 $50,000-$74,999 $75,000 or greater 31.5 68.5 74.6 25.4 1.8 11.5 39.5 35.1 12.1 24.3 23.4 20.1 17.5 14.8 at the bottom with “those who are worst of in society” (Goodman et al., 2001; Appendix A). Participants indicated their position relative to these anchors by placing an X next to one of the rungs. In the current sample, the correlations among income, education, and SSS were somewhat weaker (r’s < .37; see Table 2-2) than those typically reported in the literature (r ≈ .50; Adler, Epel, Castellazzo, & Ickovics, 2000; Haught & Rose, 2014; Oakes & Rossi, 2003). Table 2-2. Correlations Among Sociodemographic Variables Income Edu SSS Sex Race Income 1 Edu .24*** 1 SSS .37*** .28*** 1 Sex .07 .04 .13* 1 Race .02 -.03 -.08 -.01 †p<.10 *p<.05 **p<.01 ***p<.001 12 1 Health Risk Behavior To measure engagement in active vs. inactive health risks, we compiled items from two sources, the DOSPERT scale (Weber et al., 2002) and the Health Information National Trends Survey (2012). The items associated with each category of health risk behavior are discussed below. The full scale is also provided in Appendix B. Correlations, means and standard deviations among each of the health risk behaviors are provided in Tables 2-3 and 2-4, respectively. Active Risk. Participants reported the average number of alcoholic beverages they have on days when they drink (1=0 drinks, 2=1-2 drinks, 3=3-4drinks, 4=5-6 drinks, 5=7-8 drinks, 6=9-10 drinks, 7=11or more drinks), the number of sexual partners that they have had in the past month (1=0 partners, 2=1 partner, 3=2 partners, 4=3 partners, 5=4 partners, 6=5 partners, 7=6 partners, 8=7 partners or more), the average number of cigarettes that they smoke per day (1=0 cigarettes, 2=1-2 cigarettes, 3=3-4 cigarettes, 4=5-6 cigarettes, 5=7-8 cigarettes, 6=9-10 cigarettes, 7=11 or more cigarettes), the number of times that they used an illegal substance during the past month (1=0 times, 2=1-2 times, 3=3-4 times, 4=5-6 times, 5=7-8 times, 6=9-10 times, 7=11or more times), how frequently they drive more than 10 miles per hour over the speed limit (1 = never, 7 = always), and the average amount of soda they consume per day (1 = none, 2 = 12 ounces or less, 3 = 13-24 ounces, 4 = 25-36 ounces, 5 = 37-48 ounces, 6 = more than 48 ounces). Inactive Risk. Participants reported the number of days per week that they exercise for at least 30 minutes (1 = 0 days per week, 2 = 1 day per week, 3 = 2 days per week, 4 = 3 days per week, 5 = 4 days per week, 6 = 5 days per week, 7 = 6 days per 13 week, 8 = 7 days per week), the average number of fruits and vegetables they consume per day (1 = none, 2 = less than ½ cup, 3 = ½ cup to 1 cup, 4 = 1-2 cups, 5 = 2-3cups, 6 = 3-4cups, 7 = more than 4 cups), how frequently they wear their seatbelt (1 = never, 7 = always), the number of times that they had unprotected sex during the past month (1=0 times, 2=1-2 times, 3=3-4 times, 4=5-6 times, 5=7-8 times, 6=9-10 times, 7=11or more 14 Table 2-3. Correlations Among Health Risk Behaviors Drinking 1 .19** .13* .14** .10† -.06 .04 -.07 .02 .13* .02 †p<.10 *p<.05 **p<.01 Drinking Partners Smoking Drugs Driving Soda Exercise Fruit/Veg Seatbelt Unprotect Sunscreen Partners Smoking Drugs Driving Soda Exercise Fruit/Veg Seatbelt Unprotect Sunscreen 1 .02 .09 .16** .03 .01 -.05 .10† .41** -.03 1 .18** -.09† .16** .01 .03 .09† .12* .04 1 .07 -.04 .05 -.07 .09 .20** .003 1 .04 -.03 -.04 .10† .05 .01 1 .18** .12* .19** .11* .11* 1 .20** .07 -.04 .08 1 .03 -.04 .08 1 .07 .07 1 .07 1 Table 2-4. Descriptive Statistics for Health Risk Behavior, Perceived Risk, & Expected Benefits Behavior Perceived Risk Expected Benefits M SD M SD M SD Heavy Drinking 2.13 1.14 5.31 1.67 1.96 1.48 Number of Sexual Partners 1.73 .64 5.56 1.62 2.31 1.64 Smoking 2.11 2.04 6.17 1.28 1.64 1.30 Illegal Substance Use 1.76 1.80 5.97 1.44 2.28 1.79 Reckless Driving 2.73 1.83 4.72 1.56 2.68 1.62 Soda Consumption 2.07 1.20 4.03 1.66 1.85 1.21 Not Exercising 5.33 1.96 4.12 1.61 2.19 1.74 Not Eating Fruits/Veggies 4.34 1.36 3.72 1.48 2.06 1.45 Not Wearing Seatbelt 1.61 1.47 5.99 1.42 1.58 1.29 Unprotected Sex 2.21 1.93 5.84 1.59 2.25 1.66 Not Wearing Sunscreen 5.06 2.11 4.59 1.64 2.09 1.46 14 times), and how frequently they use sunscreen when going outside for more than 1 hour (1 = never, 7 = always). Frequency of exercise, fruit and vegetable consumption, seatbelt and sunscreen use were reverse scored in all analyses to aid interpretation, such that higher numbers represent greater risk-taking. Perceived Risk & Expected Benefits Perceived risk and expected benefits were measured in the same way as the DOSPERT scale. Specifically, participants rated the perceived risk and expected benefit of engaging in each of the health risk behaviors presented above using 7-point likert scales (1 = not at all risky/ no benefits at all, 7 = very risky/ many benefits; Appendix C). The reliabilities of the perceived risk and expected benefits scales for active (α =.79, α =.72) and inactive (α =.81, α =.74) health risk behaviors were adequate. Correlations among perceived risk, expected benefits, and their respective health risk behavior are provided in Table 2-5. Table 2-5. Correlations Between Health Risk Behavior, Perceived Risk, & Expected Benefits Expected Perceived Risk w/ Perceived Risk Benefits Expected Benefits Heavy Drinking -.30*** .35*** -.36*** Number of Sexual -.08*** .10†** -.48*** Partners Smoking -.08*** .20*** -.28*** Illegal Substance Use -.36*** .43*** -.54*** Reckless Driving -.34*** .45*** -.39*** Soda Consumption -.23*** .24*** -.19*** Not Exercising -.11*** -.01** -.10†** Not Eating -.09†** .03** .04** Fruits/Veggies Not Wearing Seatbelt -.35*** .32*** -.27*** Unprotected Sex -.23*** .25*** -.44*** Not Wearing Sunscreen -.37*** †p<.10 *p<.05 **p<.01 ***p<.001 .13*** 15 -.31*** Chapter Three Study 1 Results Social Class Differences in Perceived Risk & Expected Benefits A 2 (Social Class: lower social class, upper social class) X 2 (Behavior: active, inactive) X 2 (Judgment: perceived risk, expected benefits) mixed model analysis of variance (mixed ANOVA) was used to establish that there are social class differences in perceived risk and expected benefits. The first factor is between-subjects and the second and third factors are within-subjects. Separate analyses were run for each social class indicator, with an income of ≥$50,000, 1 or more years of college, and SSS ≥ 5 signifying upper social class. The pattern of results was similar for all three indicators. The main effects of Judgment (all F’s >1223.00, p’s <.001, ηp2’s =.79) and Behavior (all F’s >72.74, p’s <.002, ηp2’s =.18) were significant; however, there was no main effect of social class (all F’s <1.25, p’s >.26, ηp2’s <.004). Overall, participants rated the health risk behaviors as being more risky than beneficial and indicated that active health risk behaviors are more risky and more beneficial than inactive health risk behaviors. As hypothesized, the main effects were qualified by a significant Social Class X Judgment interaction (all F’s >3.81, p’s <.05, ηp2’s >.01; except SSS F(1,333)=1.98, p=.16, ηp2=.01); however, the nature of this interaction was not as predicted. Lower social class participants rated the health risk behaviors as more risky and less beneficial than those in upper social classes (Figure 3-1). Descriptive statistics for this interaction are presented in Table 3-1. The Behavior X Judgment interaction was also significant (all F’s >19.33, p’s <.001, ηp2’s =.06). Participants rated active and inactive health risk behaviors 16 as more risky than beneficial; however, active health risk behaviors were rated as relatively more risky than inactive health risk behaviors (Figure 3-2). Table 3-1. Descriptive Statistics for the Class X Judgment Interaction by Indicator (Study 1) Education Risk Income Benefits Risk SSS Benefits Risk Benefits M SD M SD M SD M SD M SD M SD Lower 5.00 1.02 1.95 .88 4.94 .96 2.08 .92 4.88 .93 2.02 .87 Upper 4.67 .95 2.36 1.08 4.76 1.03 2.19 1.07 4.81 1.06 2.26 1.10 6 5 Upper Class 4 Lower Class 3 2 1 Perceived Risk Expected Benefits Figure 3-1. Social Class X Judgment Interaction (Study 1) Descriptive statistics for this interaction are presented in Table 3-2. The Social Class X Behavior (all F’s <1.44, p’s >.23, ηp2’s <.001) and Social Class X Behavior X Judgment (all F’s <.56, p’s >.45, ηp2’s <.002) interactions were not significant. 17 6 5 Active 4 Inactive 3 2 1 Perceived Risk Expected Benefits Figure 3-2. Behavior X Judgment Interaction (Study 1) Table 3-2. Descriptive Statistics for the Judgment X Behavior Interaction (Study 1) Perceived Risk M 5.54 4.15 Active Risk Behavior Inactive Risk Behavior SD 1.12 1.25 Expected Benefits M 2.17 2.11 SD 1.18 1.20 Mediation & Active vs. Inactive Risk Behaviors Structural equation modeling (SEM) was used to evaluate whether perceived risk and expected benefits mediated the relationship between social class and health risk behavior and if perceived risk and expected benefits differentially predicted active vs. inactive health risk behavior. SEM is a particularly effective technique when the structural relations among constructs can be specified and the number of constructs is limited. Consistent with this idea, the hypothesized model examines whether perceived risk and expected benefits mediate the relationship between social class and different categories of health risk behavior, namely those that derive risk from action vs. inaction. In contrast to more traditional techniques (e.g., regression and multivariate analysis of variance), SEM allows the researcher to specify and simultaneously test direct and 18 indirect effects of variables on one another (Kline, 2010) and to understand the relations among sociodemographic variables (i.e., sex, race) rather than simply controlling for them. Additionally, SEM allows researchers to compare alternative models that are generated a priori or that are devised post-hoc based upon limitations of the hypothesized model (Kline, 2010). Model Specification Hypothesized Model. The hypothesized model is depicted in Figure 1-1 and includes three exogenous variables: social class, sex, and race. Social class is a continuous latent variable measured by annual household income, educational attainment, and SSS. Sex and race are categorical observed variables. In addition, there are six endogenous variables: active and inactive health risk behaviors, perceived risk for active and inactive health risk behaviors, and expected benefits for active and inactive health risk behaviors. Inactive health risk behavior is a continuous latent variable measured by six indicators. Active health risk behavior is a continuous latent variable measured by five indicators. Perceived risk and expected benefits are continuous observed variables, which are calculated by averaging across the perceived risk and expected benefits ratings of health risk behaviors in each category (active vs. inactive). As can be seen in Figure 1-1, perceived risk and expected benefits partially mediate the relationship between social class and each category of health risk behavior. Both perceived risk and expected benefits are hypothesized to predict active and inactive health risk behavior. However, perceived risk is expected to be a stronger predictor of inactive health risk behavior whereas expected benefits is expected to be a stronger predictor of active health risk behavior. In Figure 1-1, this nuance is depicted using solid 19 vs. dotted lines, with solid lines denoting stronger paths and dotted lines denoting weaker paths. Sex and race are included in the model because risk-taking is known to differ systematically by sex (e.g., Byrne et al., 1999) and because women and minorities are more concentrated in lower social classes (Braveman et al., 2005). Thus, unanalyzed associations are posited among social class, race, and sex. Consistent with research by Weber and colleagues (2002), perceived risk and expected benefits mediate the relationship between sex and each category of health risk behavior. Prior research has not demonstrated a link between race, perceived risk, and expected benefits; therefore, we assumed that except for the association with social class, race is unrelated to other variables in the model. Alternative Model. In addition to the hypothesized model, we offer an alternative model derived from research using the DOSPERT scale which suggests that regardless of category, expected benefits is a stronger predictor of health risk behavior than perceived risk (Weber et al., 2002; Hanoch et al., 2006). The alternative model is depicted in Figure 1-2 and includes the same three exogenous variables as the hypothesized model. However, the endogenous variables – perceived risk, expected benefits, and health risk behavior – differ from the hypothesized model in important ways. In the hypothesized model, health risk behavior, perceived risk, and expected benefits are split into two categories based upon whether the behavior derives risk from action or inaction. By contrast, the alternative model conceptualizes health risk behavior as a single latent variable measured by eleven indicators. Perceived risk and expected benefits are continuous observed variables calculated by averaging across the perceived risk and expected benefits ratings of the eleven health risk behaviors. 20 As can be seen in Figure 1-2, perceived risk and expected benefits mediate the relationship between social class and health risk behavior. Expected benefits is expected to be a stronger predictor than perceived risk. In the figure, this pattern is depicted using solid vs. dotted lines, with a solid line denoting a stronger path and a dotted denoting a weaker path. As in the hypothesized model, sex and race are included due to their associations with risk-taking and social class. For the reasons presented above, perceived risk and expected benefits mediate the relationship between sex and health risk behavior and except for the association with social class, race is unrelated to other variables in the model. Parameter Estimates & Fit Indices Robust Maximum Likelihood Estimation (MLR) was used to estimate free parameters in both models due to non-normality. In order to evaluate how well the hypothesized and alternative models fit the data the following fit indices were used: (1) chi-square goodness-of-fit index (e.g., Brown, 2006; Hu & Bentler, 1998); (2) comparative fit index (CFI; Bentler, 1990); (3) Tucker-Lewis Index (TLI; Tucker & Lewis, 1973); and (4) root- mean-square error of approximation (RMSEA; Steiger, 1990). Published rules for significance levels of fit indices were followed (Bentler, 1990; Browne & Cudeck, 1993; Hu & Bentler, 1998; Yu & Muthén, 2002). Specifically, the chi-square goodness-of-fit index should be non-significant at α=.05, minimum TLIs and CFIs of .90 are required for model acceptance, and values of .95 or greater are accepted as an indication of good model fit. Additionally, RMSEAs of less than .06 were accepted as indicator of a good-fitting model. Indirect pathways between social class and each category of health risk behavior were tested using the Mplus “Model Indirect” command. 21 Model Modification Hypothesized Model. Several modifications were made to the hypothesized model in order to obtain a satisfactory fit. The modified model is depicted in Figure 3-3. Figure 3-3. Modified Hypothesized Model The most significant modifications concerned the three latent variables of social class, active health risk behavior, and inactive health risk behavior. Latent variables that are misspecified can lead to poor overall model fit and unreliable parameter estimates. It is necessary, therefore, to build each measurement model (latent variable) individually before integrating them into the larger structural model. As evidenced by the fit indices for the social class measurement model (Table 3-3), annual household income, educational attainment, and SSS did not form a cohesive factor – a finding foreshadowed by the weak correlations among these indicators (p’s <.37; Table 2-2). Table 3-3. Fit indices for Social Class Latent Factor (Study 1) χ2 Test of Model Fit Social Class RMSEA .32 χ2(1)=35.53, p<.001 (CI:.23-.41) 22 CFI TLI SRMR .59 -.23 .10 Specifically, annual household income had a weak, negative loading and was uncorrelated with perceived risk and expected benefits (Table 3-4); consequently, it was dropped from the model. Because three indicators are needed to form a latent factor, removing annual household income resulted in an unidentified measurement model. Table 3-4. Correlation Between Perceived Risk, Expected Benefits, & Sociodemographic Variables Income Edu SSS Sex Race Perceived Risk Heavy Drinking Number of Sexual Partners Smoking Illegal Substance Use Reckless Driving Soda Consumption Not Exercising Not Eating Fruits/Veggies Not Wearing Seatbelt Unprotected Sex Not Wearing Sunscreen Expected Benefits Heavy Drinking Number of Sexual Partners Smoking Illegal Substance Use Reckless Driving Soda Consumption Not Exercising Not Eating Fruits/Veggies Not Wearing Seatbelt Unprotected Sex Not Wearing Sunscreen †p<.10 *p<.05 **p<.01 ***p<.001 -.03 -.01 .04 -.01 -.10† -.01 .01 -.01 .06 -.01 -.01 -.07 -.08 -.08 -.04 -.16** -.15** -.15** -.16** -.08 -.11* -.17** -.10† -.08 -.02 -.13* -.11* -.04 -.08 -.05 -.02 -.05 -.04 -.17** -.23*** -.19*** -.16*** -.25*** -.12* -.10† -.15*** -.12* -.25*** -.20*** .03 -.03 .02 .05 -.07 -.11* -.07 -.08 -.05 -.07 .04 .02 .09† -.05 -.03 .19*** -.01 -.05 -.09 -.04 .04 .01 .15** .18** .08 .02 .25*** .16** .15** .12* .08 .08 .11* .12* .10† .03 .04 .16** .06 .01 .12* .05 .05 .05 .19*** .28*** .10† .09† .19*** .14** .06 .15** .21*** .19*** .07 -.08 -.05 -.08 -.05 -.03 -.10† -.01 -.14* -.14* .01 -.06 Educational attainment was a relatively stronger indicator and was more strongly correlated with perceived risk and expected benefits (Table 3-4); thus, it was retained and SSS was dropped. Educational attainment, therefore, served as the sole proxy for social 23 class. Notably, however, exchanging educational attainment for SSS produced a similar, albeit weaker, pattern of results in the overall model. As mentioned above, the measurement models for active and inactive health risk behaviors also underwent slight modification. Soda consumption and smoking were removed from the active latent factor, and unprotected sex and seatbelt use were removed from the inactive latent factor due to cross-loading (Figure 3-4), and negative or near zero loadings. Consequently, four indicators were retained to represent the active latent factor (i.e., substance use, heavy drinking, reckless driving, and number of sexual partners) and three indicators were retained to represent the inactive latent factor (i.e., exercise, fruit and vegetable consumption, and sunscreen use). Additionally, the error variances for heavy drinking and reckless driving, and exercise and fruit and vegetable consumption were allowed to correlate.1 Figure 3-4. Loading Plot for Health Risk Behaviors (Study 1) 24 Perceived risk and expected benefits for active and inactive health risk behaviors were modified to reflect changes in the active and inactive latent factors mentioned above. Specifically, perceived risk and expected benefits were calculated by averaging across perceived risk and expected benefits ratings for the remaining active and inactive health risk behaviors. Furthermore, the error variances for perceived risk and expected benefits were allowed to correlate. Support for this modification comes from prior research demonstrating that perceived risk and expected benefits tend to be negatively correlated (Peters & Slovic, 1996). Slovic and colleagues argue that this pattern arises because people largely rely on affective information when making risk-benefit judgments. That is, people rate an activity as having high risk and few benefits when it is viewed unfavorably and as having low risk and many benefits when it is viewed favorably (Alhakami & Slovic, 1994). Other researchers also imply a correlation between perceived risk and expected benefits. For instance, Weber and colleagues (2002) argue that the trade-off between perceived risk and expected benefits predicts risk-taking. Finally, race was removed from the model because it was uncorrelated with all but one of the remaining variables in the model – namely, fruit and vegetable consumption (Tables 2-5 & 3-4). Recall that race was originally included in the model to ensure that it did not confound social class. Critically, however, race was not correlated with education (r =-.03; Table 2-2), the only remaining social class indicator. Sex, by contrast, was highly correlated with many variables in the model including perceived risk, expected benefits and health risk behavior; consequently, sex was retained. Alternative Model. The alternative model was also modified in order to ensure that it was comparable to the hypothesized model. The modifications mirror those made 25 to the hypothesized model where appropriate. Specifically, educational attainment was included as the sole proxy for social class and race was dropped from the model. Furthermore, the four indicators dropped above – soda consumption, smoking, unprotected sex, and seatbelt use – were dropped from the health risk behavior latent factor and the perceived risk and expected benefits calculations. In addition, perceived risk and expected benefits were allowed to correlate. The modified model is depicted in Figure 3-5. Figure 3-5. Modified Alternative Model Model Performance Fit indices for the hypothesized and alternative models are presented in Table 3-5. The hypothesized model demonstrated superior fit across all five fit indices compared to the alternative model. Furthermore, the hypothesized model exceeded the threshold for acceptable model fit for all fit indices except the chi-square test of model fit. The 26 Table 3-5. Fit indices for the (modified) Hypothesized & Alternative Models χ2 Test of Model Fit Hypothesized Model Alternative Model χ2(51)=70.60, p=.04 χ2(51)=151.04, p<.001 RMSEA .03 (90% CI:.01-.05) .08 (90% CI:.06-.09) CFI TLI SRMR .95 .92 .04 .54 .41 .07 alternative model, by contrast, failed to meet the threshold for acceptable model fit for any of the fit indices. This suggests that the hypothesized model is a relatively better representation of the data than the alternative model. To discern the nature of the relations among variables in the model, however, we must examine the parameter estimates for each path. Path estimates for the hypothesized and alternative models are depicted in Figures 3-6 and 3-7. Given that the hypothesized model is a better representation of the data, we focus our attention on the pattern of results for the hypothesized model below. Consistent with the analyses presented above, lower social classes and women perceived the behaviors as more risky and less beneficial than upper social classes and men. This pattern persisted regardless of the category of health risk behavior. Replicating prior research (e.g., Blais & Weber, 2006; Weber et al., 2002), greater perceived risk and fewer expected benefits were associated with lower levels of risk-taking. Again, this pattern held regardless of the category of health risk behavior. As hypothesized, however, expected benefits was a relatively stronger predictor of active health risk behavior than perceived risk whereas perceived risk was a relatively stronger predictor of inactive health risk behavior than expected benefits. Interestingly, this pattern was more pronounced for inactive than active health risk behavior. Perceived risk and expected benefits were both statistically significant predictors of active health risk behavior (albeit 27 Figure 3-6. Path Estimates for the Modified Hypothesized Model Figure 3-7. Path Estimates for the Modified Alternative Model 28 expected benefits appeared to be the stronger predictor). By contrast, perceived risk was the only significant predictor of inactive health risk behavior.The indirect effects from education to active health risk behavior through perceived risk and expected benefits were significant (Table 3-6). Table 3-6. Indirect effects for the (modified) hypothesized model Education to Active Risk Behavior Perceived Risk Expected Benefits .07*** .03*** Education to Inactive Risk Behavior Perceived Risk Expected Benefits .09*** .01*** Sex to Active Risk Behavior Perceived Risk Expected Benefits .08**8 .09*** Sex to Inactive Risk Behavior Perceived Risk Expected Benefits *p<.05 **p<.01 ***p<.001 .08*** .01*** Perceived risk and expected benefits fully mediated the relationship between education and active health risk behavior. Lower education was associated with greater perceived risk and fewer expected benefits than higher education and in turn, less active health risk behavior. At first, this finding seems to contradict prior research demonstrating that people in lower social classes engage in more health risk behavior than those in upper classes. However, the descriptive statistics for our sample reveal that upper and lower social classes reported similar mean levels of active and inactive risk behavior (Table 37). The discrepancy in the pattern of results obtained for means vs. correlations is not clear, but may be due to the fact that the pattern of means is based upon a subjective split of the data such that an income of ≥$50,000, 1 or more years of college, and SSS ≥ 5 29 signified upper social class. Different criteria for placing participants into groups (e.g., above vs. below the poverty threshold, bachelor’s degree or higher) may have produced a different pattern of mean-level results. Table 3-7. Descriptive Statistics for Active & Inactive Health Risk Behavior by Indicator Education Lower Upper M SD M Income Lower Upper SSS Lower Upper SD M SD M SD M SD M SD .82 2.07 .89 2.10 .75 2.02 .82 2.15 .80 Active Risk 2.07 2.08 2.09 Inactive Risk 5.01 1.23 4.81 1.18 4.98 1.19 4.85 1.23 5.00 1.19 4.83 1.22 The pattern of results was more complex for inactive health risk behavior . Perceived risk partially mediated the relationship between education and inactive health risk behavior, but expected benefits did not. Lower education was associated with higher perceived risk and, in turn, lower inactive health risk behavior (e.g., less exercise, lower fruit & vegetable intake). The direct effect from education to inactive health risk behavior remained significant and was opposite the indirect effect such that lower education was associated with greater inactive health risk behavior. Notably, the direct effect was more than twice the size of the indirect effect. The indirect effects from sex to active health risk behavior through perceived risk and expected benefits were also significant (Table 3-6), replicating prior research showing that perceived risk and expected benefits mediate sex differences in risk behavior. Women had greater perceived risk and lower expected benefits than men and in turn, lower levels of active health risk behavior. Similarly, the indirect effect from sex to inactive health risk behavior through perceived risk was significant, suggesting that perceived risk mediates the relationship between sex and inactive risk behavior. Women 30 had greater perceived risk than men and in turn, lower levels of inactive health risk behavior. There was no indirect effect through expected benefits. Summary of Findings Study 1 demonstrated social class differences in perceived risk and expected benefits such that participants from lower social classes rated active and inactive health risk behaviors as being more risky and having fewer benefits than participants from upper social classes. Although inconsistent with our first hypothesis, this pattern was apparent regardless of the social class indicator used for comparison and occurred at the group and individual levels of analysis. Consistent with our second hypothesis, perceived risk and benefits mediated the relationship between social class and health risk behavior, but the nature of the relationship depended upon whether the risk behavior was active or inactive. Consistent with our third hypothesis, a moderated-mediation pattern was observed such that expected benefits was a stronger predictor of active health risk behavior whereas perceived risk was a stronger predictor of inactive health risk behavior. 31 Chapter Four Overview of Study 2 The goal of Study 2 is to help clarify the relationship between social class, perceived risk, and expected benefits. An important limitation to Study 1 is that it cannot speak to the causal relations among these variables and consequently, it is difficult to discern whether the pattern of results obtained in Study 1 is due to social class or some other variable (e.g., vigilance, power). In Study 1, we demonstrated social class differences in perceived risk and expected benefits for income and education, and a similar but marginal effect for SSS. Income and education cannot be manipulated. In Study 2, therefore, we examine whether shifting the reference point that people use to make SSS judgments alters perceived risk and expected benefits in a manner similar to that observed in Study 1. Previous research has shown that shifting the reference point that people use to make SSS judgments alters their subsequent behavior. For example, Hensel (2014) showed that people who were made to feel as though they were lower social class were more likely to help a fellow student than people who were made to feel as though they were upper social class. This finding is consistent with other research showing that people in lower social classes are more empathetic, prosocial, and ethical than people in upper social classes (Kraus, Côté, & Keltner, 2010; Piff, Kraus, Côté, Cheng, & Keltner, 2010; Piff, Stancato, Côté, Mendoza-Denton, & Keltner, 2012). Although speculative, shifting the reference point that people use to make SSS judgments may alter perceptions and expectations by conjuring feelings of relative deprivation/provision (Wilkinson, 1999) or scarcity (Mullainathan & Shafir, 2013). 32 Consistent with this idea, we examine whether shifting the reference point that people use to make SSS judgments impacts perceived risk and expected benefits of the health risk behaviors used in Study 1. In order to ensure that shifts in perceived risk and expected benefits are due to the manipulation and not to other factors, Study 2 was conducted in the lab with undergraduate students rather than online where our ability to control participants’ environment is diminished. Consistent with Study 1, we expected that people in the low SSS condition would perceive both active and inactive health risk behaviors to be more risky and have fewer benefits than people in the high SSS condition. It may also be the case, however, that the manipulation will interact with participants’ actual SSS. Research has shown that in some instances people’s chronic and momentary construal of information interact to produce nuanced patterns of behavior (Cross, Hardin, & Gercek-Swing, 2011). However, this has never been demonstrated with SSS. To address this issue, we included a set of exploratory analyses that test for an interaction between the manipulation and participants’ actual SSS. 33 Chapter Five Study 2 Method Participants & Overview of Procedure Participants were 113 undergraduate students (89 females) recruited from the University of Toledo psychology research participation pool. Upon entering the lab, informed consent was obtained and participants underwent the SSS manipulation (described below). Then, they completed the perceived risk and expected benefits questionnaire used in Study 1. Socio-demographic variables were collected in a prescreening session. In exchange for their participation, students received partial credit for their introductory psychology course. SSS Manipulation SSS was measured using the MacArthur Scale (Goodman et al., 2001). The MacArthur Scale consists of a ladder with ten rungs. Typically, it is anchored on the top by “those who are best off in society” and on the bottom by “those who are worst off in society”. In order to manipulate the reference point that participants used to make SSS judgments (Hensel, 2014), participants in the low SSS condition were asked to think about people who are better off than them in society and to generate a list of the ways in which those people are better off than them. They were then asked to complete the MacArthur Scale. However, it was only anchored at the top with “those who are best off in society”. Participants in the high SSS condition were asked to think about people who are worse off than them in society and to generate a list of the ways in which those people are worse off than them. They were then asked to complete the MacArthur Scale. However, it was only anchored at the bottom with “those who are worst off in society”. 34 Perceived Risk & Expected Benefits Perceived risk and expected benefits were measured using the perceived risk and expected benefits questionnaire administered in Study 1 (Appendix C). Socio-demographic Questions Participants completed the same socio-demographic questions administered in Study 1 during a prescreening session. 35 Chapter Six Study 2 Results Manipulation Check An independent samples t-test was run on participants SSS ratings in order to assure that the SSS manipulation was successful. As expected, participants in the low SSS condition rated their SSS significantly lower than those in the high SSS condition, t(111)=-3.64, p<.001. Primary Analyses A 2(Condition: low SSS, high SSS) X 2(Behavior: active, inactive) X 2 (Judgment: perceived risk, expected benefits) mixed model analysis of variance (ANOVA) was run to determine whether manipulating social class alters perceived risk and expected benefits for the set of health behaviors. The first factor was between subjects and the second and third factors were within-subjects. Sex was entered as a covariate. The main effects of Judgment (F(1,110)=78.17, p<.001, ηp2=.42) and Behavior (F(1,110)=16.00, p<.001, ηp2=.13) were significant. As expected, participants rated the behaviors as having high levels of risk and few benefits, but active health risk behaviors were rated as more risky than inactive health risk behaviors. The main effect of Condition was not significant (F(1,110)=78.17, p<.001, ηp2=.42). The main effects were qualified by a significant Judgment X Behavior interaction, F(1,110)=3.69, p=.05, ηp2=.03. Participants rated active and inactive health risk behavior as having a similar number of benefits; however, they rated active health risk behaviors as more risky than inactive health risk behavior (Figure 6-1). Descriptive statistics for this interaction are presented in Table 6-1. The hypothesized Condition X Judgment 36 interaction (F(1,110)=.15, p=.70, ηp2=.001) as well as the Condition X Behavior (F(1,110)=.05, p=.83, ηp2<.001) and Condition X Judgment X Behavior (F(1,110)=.09, p=.76, ηp2=.001) interactions were not significant. 6 5 4 Active Inactive 3 2 1 Perceived Risk Expected Benefits Figure 6-1. Behavior X Judgment Interaction (Study 2) Table 6-1. Descriptive Statistics for the Judgment X Behavior Interaction (Study 2) Perceived Risk M 5.37 4.78 Active Risk Behavior Inactive Risk Behavior SD 1.01 .85 Expected Benefits M 2.07 2.06 SD 1.08 1.14 This finding contrasts with our hypothesis that people in the low SSS condition would rate the behaviors as having higher risk and fewer benefits than those in the high SSS condition. This may not be surprising given the marginal effect observed in Study 1. As discussed above, however, the manipulation may have interacted with participants’ actual social class. We test this in the set of exploratory analyses below. Exploratory Analyses Exploratory analyses were undertaken in order to test whether the manipulation interacted with participants’ actual social class (i.e., annual household income and 37 parents’ educational attainment). High social class was defined as an annual household income of ≥$50,000 and one or more parents with at least a bachelor’s degree. We ran two 2(Social Class: Low Income/Education, High Income/Education) X 2(Condition: Low, High) X 2(Judgment: Perceived Risk, Expected Benefits) X 2(Behavior: Active, Inactive) mixed ANOVAs. Sex was entered as a covariate. Mirroring the results reported above, the main effects of Judgment (F’s >44.55, p’s <.001, ηp2’s >.37) and Behavior (F’s >10.14, p’s<.002, ηp2’s >.12), and the Judgment X Behavior interaction were significant (F’s >2.96, p’s<.08, ηp2’s >.03). The main effects of Social Class (F’s <2.33, p’s >.13, ηp2’s <.02) and Condition (F’s <.88, p’s >.35, ηp2’s <.01), and the remaining 2-, 3-, and 4-way interactions (F’s <1.68, p’s>.20, ηp2’s <.02) were not significant. For interested readers, the expected Social Class X Condition X Judgment interaction for education is depicted in Figure 6-2. A similar pattern of results was obtained for income. Overall, the null results in the main and exploratory analyses for Study 2 fail to replicate results obtained in Study 1. 38 6 6 5 5 4 4 3 3 2 2 Low SSS High SSS 1 Perceived Risk 1 Expected Benefits Perceived Risk Figure 6-2. Class X Condition X Judgment Interaction (Study 2) 39 Expected Benefits Chapter Seven Discussion The pathways by which social class affects health risk behavior are not wellestablished. The current studies are among the first to examine how psychological factors – namely, perceived risk and expected benefits – affect social class differences in health risk behavior. We hypothesized that 1) people in lower social classes would perceive active and inactive health risk behavior to be less risky and have greater benefits than those in upper social classes, 2) perceived risk and expected benefits would mediate social class differences in active and inactive health risk behavior, and 3) perceived risk would be a stronger predictor of inactive health risk behavior whereas expected benefits would be a stronger predictor of active health risk behavior. We discuss findings related to each of these hypotheses below. Social Class Differences in Perceived Risk & Expected Benefits Study 1 provides evidence for social class differences in perceived risk and expected benefits; however, the nature of this difference was not as expected. Lower social classes perceived health risk behaviors as being more risky and having fewer benefits than upper social classes. The reason for this pattern is unclear. Notably, however, it was observed for active and inactive health risk behaviors, at the individual and group levels of analysis, and regardless of the social class indicator chosen for comparison. Though this finding seems to contradict prior research on sex and culture differences in risk perception (Blais & Weber, 2006; Weber et al., 2002; Weber & Hsee, 1998), there are several possible explanations for our results. First, people in upper and lower social classes may call upon different kinds of information when making risk 40 judgments or weight similar information differently. Support for this perspective comes from qualitative studies demonstrating that upper and lower social classes think and communicate about health in different ways. In one study, for instance, Chamberlain and O’neill (1998) showed that people in lower social classes have more limited definitions and expectations of health, view health-promoting behaviors as less effective, and discuss greater situational pressures to engage in health risk behavior (see also Fiske & Markus, 2012). Although speculative, it may be the case that lower social classes are considering the social and situational consequences of health risk behavior (e.g., inability to fulfill obligations, social acceptance) whereas people in upper social classes are considering the mental and physical consequences of health risk behavior (e.g., disease, depression, death). Second and relatedly, people in lower social classes may be more aware of risks than those in upper social classes. Consistent with this idea, Kraus and colleagues (2011) have demonstrated that people in lower social classes are more vigilant than those in upper social classes and therefore, are more sensitive to threat and more attentive to contextual information. This suggests that lower social classes may generally be more aware of the risk and benefits associated with an action. Given the unexpected pattern of results obtained in Study 1 and the limitations associated with correlation designs, we attempted to replicate this pattern experimentally in Study 2 by manipulating the reference point that participants used to make SSS judgments. Unfortunately, the pattern did not replicate in Study 2. This may not be too surprising given that SSS was the weakest predictor of social class differences in perceived risk and expected benefits in Study 1, yielding only a marginal effect. It is unclear why SSS was a weaker predictor; however, it may be because there is a mismatch 41 in the concreteness of SSS judgments and the perceived risk and expected benefits judgments. SSS is often a stronger predictor of abstract judgments, such as global selfrated health and life satisfaction, than OSS (Adler & Rehkopf, 2008). It may be the case, therefore, that SSS is a stronger predictor of global outcomes whereas OSS is a stronger predictor of concrete outcomes. That said, there are a number of other possible reasons for the null results obtained in Study 2. The manipulation, for instance, may not have been strong enough to alter participants’ perceptions of risk and associated benefits. Few studies have attempted to shift SSS experimentally and as mentioned earlier, we are aware of only one study that has successfully employed the manipulation used in Study 2 (i.e., Hensel, 2014). Manipulations that place participants in positions of higher vs. lower social status, such as those employed by Sharif and colleagues (2013), may be more effective for altering perceived risk and expected benefits, as previous research demonstrates they are effective at altering behavior (i.e., test performance, spending patterns). It may also be the case that social class shapes perceived risk and expected benefits over time in a manner similar to culture. If so, we may be unable to capture the relationship between social class, perceived risk, and expected benefits using single-shot laboratory manipulations. Evidence for this idea comes from research demonstrating that social class has a cumulative effect on health and well-being. Pensola and Martikainen (2003) showed, for instance, that people residing in lower social class environments during childhood and adulthood have poorer health outcomes than either 1) those who transitioned to from a lower social class during childhood to a higher social class during adulthood or 2) those who transition from a higher social class during childhood to a lower social class during adulthood. Finally, the sample used in Study 2 may account for 42 the null results. Study 1 was conducted on a sample of adults that were more diverse in terms of income, education, and SSS than the undergraduate sample used in Study 2. There may be important distinctions in what social class means for these groups, as college students have yet to obtain their full level of education and income. Perceived Risk & Expected Benefits as Mediators Overall, Study 1 supports our second hypothesis – that perceived risk and expected benefits mediate the relationship between social class and health risk behavior. Though, the pattern differed somewhat for active and inactive health risk behaviors. Perceived risk and expected benefits fully mediated social class differences in active health risk behavior such that lower social class led to higher perceived risk and fewer expected benefits and in turn, lower active health risk behavior. This finding may seem to contradict prior literature demonstrating that lower social classes engage in more active health risk behavior than upper social classes (Fone, 2013; Mackenbach & Bakker 2002). In our sample, however, upper and lower social classes reported engaging in similar levels of active health risk behavior. This finding may be the result of sampling error or the criteria used to split participants into groups. However, this seems unlikely given that a similar pattern was demonstrated for inactive health risk behaviors (discussed below) and as mentioned earlier, regardless of the social class indicator chosen for comparison. That said, additional research is necessary to rule out these possibilities The relationship between social class and inactive risk behavior is more complex. Perceived risk (but not expected benefits) partially mediated social class differences in inactive health risk behavior such that lower social class led to higher perceived risk and in turn, lower inactive health risk behavior. However, the direct effect from social class 43 remained significant and acted in the opposite direction such that lower social class led to more inactive health risk behavior. It is unclear what other variables may underlie the direct effect. It may be the case, for instance, that structural constraints partially mediate social class differences in inactive health risk behavior. It is difficult for lower social classes, regardless of their risk perceptions, to engage in healthy behavior if they have limited access to supermarkets or recreational resources like city parks (Kwarteng et al., 2013; Virtanen et al., 2007). Additionally, the struggle lower social classes experience in making ends meet may direct their focus to the short-term consequences of behavior. The consequences of inactive health risk behavior are not immediately apparent, but occur slowly over time. A focus on short-term consequences, therefore, may lead to greater inactive health risk behavior. As evidence, Orbell and colleagues (2004) demonstrated that the extent to which people consider the long-term consequences of their actions is related to their intentions to engage in healthy behavior. Perceived Risk & Expected Benefits Predict Active & Inactive Risk Behaviors Findings from Study 1 most clearly support our third hypothesis – that perceived risk and expected benefits differentially predict engagement in active vs. inactive health risk behavior. Both perceived risk and expected benefits were significant predictors of active health risk behavior. Higher perceived risk and fewer expected benefits were associated with less active health risk behavior. Critically, however, expected benefits was a relatively stronger predictor of active health risk behavior than perceived risk. By contrast, perceived risk was a relatively stronger predictor of inactive health risk behavior than expected benefits. In fact, findings suggest that expected benefits was unrelated to inactive health risk behavior. These findings are consistent with prior research on the 44 Behavioral Inhibition and Behavioral Activation Systems (BIS and BAS, respectively), demonstrating that the BIS is sensitive to punishment and motivates inaction or avoidance whereas the BAS is sensitive to reward and motivates action (Verbruggen et al., 2012). Sex Differences in Risk Behavior In addition to the findings related to our three primary hypotheses, we successfully replicated prior research demonstrating that perceived risk and expected benefits mediate sex differences in health risk behavior (Weber et al., 2002) and extended these findings by showing that the pattern of results differs depending upon the category of health risk behavior. Echoing the pattern obtained for social class, perceived risk and expected benefits mediated sex differences in active health risk behavior whereas only perceived risk mediated sex differences in inactive health risk behavior. The effect from sex to inactive health risk behavior was similar in size to that from social class to inactive health risk behavior; however, the effects from sex to active health risk behavior was notably larger than those from social class to active health risk behavior. Although speculative, this may be rooted in biological differences between men and women that are not applicable in the case of social class. Evidence for this idea comes from studies demonstrating that males are more likely to take risks across cultures (Weber & Morris, 2010). That said, we are not suggesting that socialization is unimportant in shaping perceived risk and expected benefits. Indeed, the existence of cross-cultural and classbased differences suggest that socialization processes are a key component in shaping these judgments. Rather, we are suggesting that sex differences may arise due to a combination of social and biological factors. 45 Limitations There are several limitations to the current studies. First, Study 1 employed a correlational design which limits our ability to discern causal relationships. It is possible that an extraneous variable underlies the observed pattern of results. Study 2 employed an experimental design; however, it only tested a portion of the hypothesized model and focused on a different social class indicator than was used in Study 1. Additional work is needed to 1) develop stronger social status manipulations, 2) determine whether the null results obtained in Study 2 replicate in these paradigms, and 3) establish causal relations among perceived risk, expected benefits, and each category of health risk behavior. Second, participants in Study 1 were asked to self-report the frequency with which they engaged in active and inactive health risk behavior. Self-report measures are susceptible to a variety of biases and errors that may not arise using other methods of measurement. Research has shown, for instance, that self-report measures are susceptible to social desirability concerns and problems with recall. It is important, therefore, that these results be replicate using other methods such as direct observation. That said, there are advantages to self-report measures that are critical to the current studies. Specifically, self-report measures allow researchers to estimate the frequency of private behaviors, which typically cannot be observed by researchers – for instance, sexual encounters or illicit drug use. Third, the health risk behaviors used in the current studies may differ along dimensions other than action-inaction. For instance, active health risk behaviors also tend to have immediate consequences whereas inactive health risk behaviors tend to have distant consequences. Future research is needed to isolate these factors. Researchers 46 should also consider other ways of conceptualizing health risk behaviors. For example, health risk behaviors are commonly placed into categories based upon whether they are public or private, socially acceptable, and prevent disease or promote health. Understanding the independent and interactive effects of these factors will be important for advancing theory on the link between risk perception and health risk behavior. Fourth, the MTurk sample obtained in Study 1 limits our ability to generalize results. The sociodemographic characteristics of the sample differ in important ways from the US population (Census, 2013). Furthermore, a limited number of participants reported engaging in active health risk behaviors in Study 1. A larger sample may be required in order to gain a full understanding of how perceived risk and expected benefits affect active health risk behavior. Research would benefit from replicating the observed pattern of results in a larger, nationally representative sample. Fifth, the health risk behaviors used in the current studies do not differentiate between the initiation of risk behavior and the maintenance of risk behavior; though, the items used in the health behavior questionnaire may represent maintenance to a greater extent than initiation. Critically, the factors that lead to initiation have been shown to differ in important ways from the factors that underlie maintenance (Rauscher, Hawley, & Earp, 2005). Future research would benefit from understanding the extent to which the observed pattern of results differs depending upon whether the outcome is initiation vs. maintenance. Additionally, research would benefit from identifying factors that give rise to social class differences in perceived risk and expected benefits. For instance, studies that aim to understand whether differences in perceived risk and expected benefits are 47 driven primarily by affect vs. cognition may be particularly useful in targeting health messages. Basic & Applied Contributions Our findings contribute to the risk-taking literature in a variety of ways. First, the current studies are the first to demonstrate social class differences in perceived risk and expected benefits. Although the pattern of results were not as hypothesized and challenging to explain in the broader context of social class-risk effects, they are consistent with prior research on vigilance, demonstrating that people in lower social classes are more vigilant than those in upper social classes (e.g., Kraus et al., 2011) and, therefore, more sensitive to threat. Future work is needed to examine whether vigilance mediates the relationship between social class, perceived risk, and expected benefits Second, we provide additional evidence for the distinction between active and inactive risk behaviors. The active-inactive distinction is prominent throughout the psychological literature; however, this distinction has only recently been applied to risk behavior. Our findings support those obtained by Keinan and Bereby-Meyer (2012) and suggest that different mechanisms may underlie active and inactive risk behaviors. Third and relatedly, we demonstrate that the relations among risk-taking, perceived risk, and expected benefits differ depending upon the category of risk behavior under consideration. No study in this area has address this topic and the findings here directly impact theory and research related to understanding the relationships between perceptions of risk behaviors and the actual behaviors (Weber et al., 2002; Weber & Morris, 2010). Future research would benefit from generalizing the relations among perceived risk, 48 expect benefits and active vs. inactive risk behaviors to domains other than health – for instance, ethics or finance. The current studies also advance research and theory on health disparities by demonstrating that perceived risk and expected benefits mediate social class differences in health risk behavior and by specifying when these mechanisms are most impactful. Our findings suggest that public health policies and interventions that increase the perceived risk and decrease the expected benefits of health risk behavior may be critical for reducing class-based health disparities and that the category of health risk behavior should determine whether the focus of public health campaigns should be directed toward perceived risks for a behavior or expected benefits for the behavior. 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Management Science, 43, 122–143. 56 Weber, E. U. & Morris, M. W. (2010). Culture and judgment and decision making: The constructivist turn. Perspectives on Psychological Science, 5, 410-419. 57 Appendix A Think of the ladder as representing where people stand in society. Some people are better off – they have more money, more education, and better jobs. Other people are worse off – they have less money, less education, and worse jobs. The higher up on the ladder you are, the closer you are to the people at the top and the lower you are, the closer you are to the people at the bottom. Think about yourself. Please use an ‘X’ to indicate on which rung of the ladder you would place yourself. People in society who are the best off People in society who are the worst off 58 Appendix B Please read carefully and answer as accurately and honestly as possible. Indicate the frequency with which you engage in each behavior. 1. On days when you drink, what is the average number of drinks that you consume per day? 0 drinks 1-2 drinks 3-4 drinks 0 1 2 5-6 7-8 drinks drinks 3 4 9-10 drinks ≥11 drinks 5 6 2. How many sexual partners have you had in the past month? 0 partners 1-2 partners 3-4 partners 5-6 partners 7-8 partners 9-10 partners ≥11 partners 0 1 2 3 4 5 6 9-10 cigarettes 5 ≥11 cigarettes 6 3. On average, how many cigarettes do you smoke per day? 0 cigarettes 0 1-2 ‘cigarettes 1 3-4 cigarettes 2 5-6 cigarettes 3 7-8 cigarettes 4 4. How many times have you used an illegal substance (e.g., marijuana) during the past month? 0 times 0 1-2 times 1 3-4 times 2 5-6 times 3 7-8 times 4 9-10 times 5 ≥11 times 6 5. How frequently do you drive more than 10 mph over the speed limit? Never 1 Always 2 3 4 59 5 6 7 6. On average, how much soda do you consume per day? None 12oz or less 13-24oz 25-36oz 37-48oz ≥48oz 1 2 3 4 5 6 7. On average, how many days per week do you exercise for at least 30 minutes? 0 days 1 day 2 days 3 days 4 days 5 days 6 days 7 days 8. On average, how many servings of fruits and vegetables do you eat per day? None 0 Less than ½ cup 1 ½-1cup 1-2 cups 2-3cups 3-4 cups 2 3 4 5 4 or more cups 6 9. How frequently do you wear your seatbelt? Never 1 Always 2 3 4 5 6 7 10. How many times have you had unprotected sex in the past month? 0 times 0 1-2 times 1 3-4 times 2 5-6 times 3 7-8 times 4 9-10 times 5 ≥11 times 6 11. How frequently do you use sunscreen when going outside for more than 1 hour? Never 1 Always 2 3 4 60 5 6 7 Appendix C Please read carefully. Using the scale provided, indicate how risky you perceive each behavior. Not at all risky 1 Very risky 2 3 4 5 6 7 1. Consuming five or more servings of alcohol in a single evening. ______ 2. Having multiple sexual partners. ______ 3. Smoking cigarettes. ______ 4. Using illegal drugs. ______ 5. Driving more than 10mph over the speed limit. ______ 6. Consuming more than 12oz (1 can) of soda per day. ______ 7. Not exercising 4 or more days per week. ______ 8. Eating fewer than 5 servings of fruits and vegetables per day. ______ 9. Not wearing your seatbelt when being a passenger in the front seat. ______ 10. Engaging in unprotected sex. ______ 11. Exposing yourself to the sun without using sunscreen. ______ 61 Please read carefully. Using the scale provided, indicate the number of benefits you associate with each behavior. No benefits at all 1 Many benefits 2 3 4 5 6 7 1. Consuming five or more servings of alcohol in a single evening. ______ 2. Having multiple sexual partners. ______ 3. Smoking cigarettes. ______ 4. Using illegal drugs. ______ 5. Driving more than 10mph over the speed limit. ______ 6. Consuming more than 12oz (1 can) of soda per day. ______ 7. Not exercising 4 or more days per week. ______ 8. Eating fewer than 5 servings of fruits and vegetables per day. ______ 9. Not wearing your seatbelt when being a passenger in the front seat. ______ 10. Engaging in unprotected sex. ______ 11. Exposing yourself to the sun without using sunscreen. ______ 62
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