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The current study investigated the nature of executive function (EF) abilities in preschoolers using confirmatory factor analysis; potential antecedents and outcomes were examined as well. Executive function refers to higher order cognitive abilities necessary to consciously and deliberately persist in a task; these abilities are associated with a wide variety of important developmental outcomes. Within the developmental literature, studies on EF development in early childhood have focused most often on the constructs of working memory (WM) and inhibitory control (IC). Whether WM and IC are dissociable cognitive abilities is an unresolved issue within the literature; accordingly, performance on a battery of EF tasks at ages 2 and 4 was assessed to determine if EF structure at these ages is best described by a single factor or two factors consisting of working memory and inhibitory control. At both ages, a unitary model fit the data well. Longitudinal relations between attention in infancy, preschool EF, and school readiness and social competency at age 4 were also examined. Although infant attention measures failed to significantly predict later EF, pathways between age 4 EF (but not age 2 EF) and all age 4 outcomes were significant and in the expected direction. Understanding the nature of EF and the factors associated with optimal regulatory abilities is necessary for both theoretical and practical purposes, and given the considerable improvements that happen to EF abilities during this time period in early childhood, longitudinal studies such as this one are necessary to address issues of developmental change. / Ph. D.

Hundreds of thousands of organizations have chosen to boost their competitive position by demonstrating compliance to the ISO 14001 Environmental Management System standard. In order for these standards to become credible policy options, they must ensure the capacity to build an industrial morality and to institutionalize responsibility. Relying on a series of in-depth interviews with environmental auditors, this dissertation contributes to a deeper empirical understanding of these regulatory instruments by, first, exploring how the adoption of an EMS promotes self-regulatory capacity and contributes toward effective environmental protection, and second, discussing the limitations of its accountability structure and the threats to the credibility of the standard. This project highlights several misconceptions associated with the role of ISO 14001, and explains why both public and private sectors hold conflicting and inappropriate expectations regarding the certification process. According to the environmental auditors interviewed, the standard has helped thousands of committed organizations to effectively improve their self-regulatory capacity as well as their environmental performance. Yet, organizations with no intrinsic motivation can take advantage of the flexibility granted by the standard and the limitations of the conformity assessment process, to obtain an empty environmental certificate. ISO 14001 is a process standard that can help both "environmental leaders and laggards / Ph. D.

This study investigated self-regulated learning behaviors and their relationships with academic performance in web-based courses. The participants (n = 106) were distance learners taking humanities and technical coursed offered by a community college in Virginia. Data was collected using 28 items from the Motivated Strategies for Learning Questionnaire and 5 demographically related items. Data analysis included factor analyses, multivariate analysis of variance, and regression analyses. The employment of self-regulated learning behaviors differed between humanities and technical courses (p = .0138). Time and study environment management (p = .0009) and intrinsic goal orientation (p = .0373) categories reported significant findings in their relationship to academic performance. The factors affiliated with time and study environment management and intrinsic goal orientation were used as predictors in the development of a mathematical formula used to predict academic success in a web-based course. These predictors explain 21 percent of the variance in the academic success rating calculated using the mathematical formula developed from this study. / Ph. D.

Spillover research has shown that workday stress hampers commuting safety, while ego depletion research has demonstrated that prior self-regulation leads to performance decrements in subsequent tasks. This study sought to unite these two lines of research by proposing that ego depletion-induced alterations in attention and motivation are the mechanisms by which workday experiences spill over to the commute and impair driving safety. To examine the daily influences of these within-person processes on driving behavior in the post-work commute, this study adopted a daily survey design, wherein participants took an online survey immediately before and after each post-work commute across one work week. In these daily surveys, fifty-six participants (N = 56; n = 250 day-level observations) reported their workday self-regulatory demands; pre-commute levels of attention, motivation, and affective states; and driving behavior during the commute home. Using multilevel path analysis to isolate within-person effects, the current study found no evidence to suggest that workday self-regulatory demands lowered pre-commute attention and motivation, nor did it detect associations of attention and motivation with post-work aberrant driving. Results indicated that an ego depleted state might impair attention and motivation but not driving safety in the commute. Instead, the results pointed to the person-level factor of trait self-control as potentially having a greater impact on post-work aberrant driving than daily experiences. / M.S. / Research has shown that employees tend to drive more unsafely when commuting home after a stressful workday. However, most of this research has examined what about the person makes them drive more unsafely than someone else, but it is also important to understand what about the workday makes someone drive more unsafely one day than another day. I predicted that a workday containing more self-control demands would make an employee drive more unsafely when commuting home from work because facing more self-control demands would lower the employee’s attention and motivation for driving safely. To test this idea, I gave participants two online surveys per day for five consecutive days, Monday through Friday – one at the end of their workday (asking about their workday demands and current levels of attention and motivation), and one at the end of their commute home (asking about their driving behavior during that post-work commute). The data from my final sample of 56 participants (N = 56; n = 250 study days) showed no evidence to support my hypotheses: the amount of workday self-control demands was not found to associate with attention and motivation before driving home, and attention and motivation before driving home were not found to relate to driving safety during that commute home. On the other hand, I did find that a person’s general ability to maintain self-control was associated with their driving safety during the commute home (regardless of workday self-control demands). These results suggest that a person’s character might be more important in determining their day-to-day driving safety during the commute home than the self-control demands they face during the workday.

Stereotypes are cognitive heuristics used by all individuals. Researchers studying bigotry have demonstrated that individuals often expose underlying stereotypical racial biases when using less effortful processing (e.g. Correll, Park, Judd, & Wittenbrink, 2002; Miarmi & DeBono, 2007). It is well-established in the resource depletion literature that acting beyond natural impulses requires self-regulation. However, the capacity for self-regulation is limited; prior acts of self-regulation deplete regulatory resources, hence temporarily decreasing the ability to self-regulate. The objective of this study was to examine if resource depletion leads to greater expressions of bigotry. More specifically, self-regulation failure was studied from the emotion resource depletion perspective. Even if resources are depleted however, some individuals may be more motivated than others to suppress their biases. Egalitarianism, a value system that emphasizes equal treatment for all, may be an individual difference that influences this motivation. Thus, egalitarianism was examined as a potential moderator of the resource depletion effect. In the current study, 100 participants were randomly assigned to an emotion suppression or a control condition as they watched a race-relevant social injustice video. Then, participants were given the opportunity to express bigotry through responses to a survey assessing reactions to racial microaggressions. Research findings provide evidence for an emotion resource depletion effect in that individuals suppressing their emotions while watching the video expressed greater bigotry on the survey. Additionally, the results also demonstrated a negative relationship between egalitarianism and expressions of bigotry. Although the interaction effect was not found on the full sample, exploratory gender subgroup analyses suggest that gender is a potential moderator of the interaction between emotion suppression and egalitarianism on expressions of bigotry. Within the male sample, relative to participants scoring low on egalitarianism, high egalitarian participants in the emotional suppression condition showed a greater rate of emotional resource depletion due to the video and in turn showed greater levels of bigotry. In contrast, the evidence was only consistent with an egalitarianism main effect for female participants. Thus, findings from the study demonstrate that aside from cognitive-based depleting tasks, emotion resource depletion can also lead to self-regulation failure in terms of expressions of bigotry. Although the resource depletion effect was robust, there are several limitations in this study that need to be addressed in future research. This includes collecting a more genderbalanced sample so gender can be analyzed as part of a three-way interaction to determine the impact gender had on the model. Furthermore, there was a persisting model misspecification issue; in an ongoing replication study, a measure on agreeableness has been included to assess if this was part of the missing variable problem. Finally, the two self-regulation tasks in the current study were domain-specific in the sense that they were both racially-relevant. Next steps include testing the domain-general argument of the resource depletion effect; that is, if selfregulation failure from emotion suppression would still be observed if the two self-regulation tasks were not related through the context of race. / M.S. / Stereotypes are cognitive heuristics used by all individuals. Researchers studying bigotry have demonstrated that individuals often expose underlying stereotypical racial biases when they rely on more automatic thought-associations as they process situations. It is well-established in research that acting beyond these natural impulses requires self-regulation. For example, one study showed that self-regulation effort was required to suppress the automatic association between African-Americans and negative traits such as hostility and recklessness (Muraven, 2008). However, our capacity to effectively self-regulate is limited; prior acts of self-regulation deplete regulatory resources, hence temporarily decreasing the self-regulation ability. The objective of this study was to examine if resource depletion (i.e. practicing self-regulation and using those regulatory resources) leads to greater expressions of bigotry, and particularly to understand the role of emotions in this process. However, even if resources are depleted, some individuals may be more motivated than others to suppress their biases. Egalitarianism, a value system that emphasizes equal treatment for all, may be an individual difference that influences this motivation. Thus, egalitarianism was examined as a potential moderator of the resource depletion effect. 100 participants were randomly assigned to an emotion suppression or a control condition as they watched a race-relevant social injustice video, then they responded to a survey assessing reactions to racial microaggressions. Research findings demonstrate an emotion resource depletion effect; individuals suppressing their emotions while watching the video expressed greater bigotry on the survey. Additionally, a negative relationship was found between egalitarianism and expressions of bigotry. Interestingly, gender seemed to moderate the interaction between emotion suppression and egalitarianism on expressions of bigotry. For males, relative to low egalitarians, high egalitarians who suppressed their emotions expressed greater levels of bigotry; this indicates a greater rate of emotional resource depletion experienced from watching the video. In contrast, there was no difference in emotion resource depletion in females across egalitarian values. Thus, results demonstrate how emotion resource depletion can lead to expressions of bigotry. This carries implications to our social interactions, as both emotion regulation and interracial encounters are common components of our daily lives.

Weight management is problematic among Americans, as the number of overweight adults has risen to two-thirds of the population (1). Without the identification of successful approaches to promote weight stability, it is predicted that 86% of American adults will be overweight or obese by 2030 (2). Body-weight influenced diseases, such as diabetes and cardiovascular disease, are now leading causes of death (3). Annually, adult Americans are thought to increase their body weight by 0.5-0.9 kg (4). Of this gain, 52% is believed to occur during the winter holiday period of mid-late November to early January (5). Unfortunately, obesity research specific to this high-risk period is limited. Older adults and weight-reduced individuals are thought to be highly susceptible to significant holiday body weight gains (1, 6). To date, little research has investigated effective interventions that may be used to assist in successful body weight maintenance during the winter holiday period. Therefore, our purpose was to determine if daily self-monitoring of body weight, physical activity, and step counts is a feasible and effective tool to prevent weight gain in older, weight-reduced adults during the winter holiday period. This intervention represents a holiday weight maintenance approach that may be translatable to larger, more diverse populations. / Master of Science