Traditional psychology has held the view that mentally healthy people have a good grasp of reality. However, studies on self-concept, perceived control and optimism have shown that mentally healthy people have a tendency to distort reality in these areas in a positive, self-serving direction. These studies led Shelley Taylor to coin the term "positive illusions" to describe overly positive self-evaluations, exaggerated perceptions of control, and unrealistic optimism. Taylor also theorized that those who were depressed had fewer positive illusions than those who were not depressed. The current study attempted to extend the foundation of basic research on the concept of positive illusions as well as their relationship to depression. Participants were given questionnaires at two time points (summer and winter) that measured the three components of positive illusions as well as Seasonal Affective Disorder (SAD), or winter depression. It was expected that those who had SAD would be depressed in the winter and therefore have fewer positive illusions at that time than in the summer when they were less depressed. Significant positive correlations between selfconcept, perceived control, and optimism indicated shared variance which is consistent with the existence of an underlying variable, i.e. positive illusions. Though results showed no difference in positive illusion scores between summer and winter, those with higher SAD scores (signifying greater depression) had fewer positive illusions at both time points than those with lower SAD scores. Finally, the remarkable similarity between positive illusion scores at the two time points suggests that positive illusions may exist as a personality trait, rather than being state dependent. Drawbacks of this study and suggestions for future research are discussed.

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Research suggests that optimising affect during exercise may be key to exercise adherence (Van Landuyt, Ekkekakis, Hall & Petruzzello, 2000; Williams et al. 2008; 2012). Recent advances in this area have explored factors that contribute to affective responses in adult populations (Ekkekakis, 2003), but whilst it has been hypothesised that these factors are the same for children and adolescents they have not been explored systematically in the same way. As such, one aim of this thesis was to investigate the relationships between affect and physical activity in child and adolescent populations. Following on from this, a further aim was to explore the factors that contribute to affective responses. Given the research that suggests positive affect experienced during exercise may result in enhanced adherence to physical activity (Williams et al. 2012), the final aim of this study was to determine how to elicit the most positive affective responses during an acute exercise session. This thesis comprises a review of relevant literature, and six study chapters which were the result of three empirical studies; two acute exercise studies and one questionnaire based study. The findings of Study 1 demonstrated that, as with adults, affective responses declined after the onset of ventilatory threshold in both children and adolescents, indicating that to achieve optimum affective responses, particularly with younger children, exercise needs to be prescribed at an intensity below the ventilatory threshold. The findings from studies 2 - 4 highlighted specific factors that contribute to affective responses, reporting that preference for, and tolerance of, different exercise intensities may be an important factor to consider when prescribing exercise (studies 2 & 4). Results also showed that affective associations with physical activity played a significant role in determining overall physical activity behaviour (study 3). The findings from studies 4 and 5a and b revealed that encouraging adolescents to self-select their own exercise intensity may elicit a more positive affective response during the exercise session compared to the affective responses elicited during a prescribed exercise session. This thesis provides substantial evidence to support the link between affect and physical activity in children and adolescents. More specifically, it highlights several important factors that should be considered when attempting to enhance affective responses during an acute exercise session.

Many studies have documented adverse affects to inequitable situations in non-human primates. The behaviors that have predominantly been examined include food taking, collecting, giving, and refusals between the primate subjects and the experimenters. However, no studies had looked at the affective responses to inequity in primates. In a recent study, four-year old children who were rewarded inequitably accepted the reward, however they showed affective signs of dissatisfaction. For this study, we looked for affective displays in capuchins during inequitable exchange tasks. We predicted that the capuchins that were experiencing inequity would show more signs of agitation and aggression than those in equitable situations. We saw no increase in agitation or aggression when subjects were treated inequitably. There was higher aggression towards partners who received the lower reward in inequitable situations and less agitation seen by partners during frustration controls. Future studies may find our hypothesized results using different methodologies.

Many studies have documented adverse affects to inequitable situations in non-human primates. The behaviors that have predominantly been examined include food taking, collecting, giving, and refusals between the primate subjects and the experimenters. However, no studies had looked at the affective responses to inequity in primates. In a recent study, four-year old children who were rewarded inequitably accepted the reward, however they showed affective signs of dissatisfaction. For this study, we looked for affective displays in capuchins during inequitable exchange tasks. We predicted that the capuchins that were experiencing inequity would show more signs of agitation and aggression than those in equitable situations. We saw no increase in agitation or aggression when subjects were treated inequitably. There was higher aggression towards partners who received the lower reward in inequitable situations and less agitation seen by partners during frustration controls. Future studies may find our hypothesized results using different methodologies.

Thèse (M.Med.Exp.) -- Université Laval, extensionné à l'Université du Québec à Chicoutimi, 1999. / Bibliogr.: f. [90]-99. Document électronique également accessible en format PDF. CaQCU

Thesis (Ph.D.) in Psychology--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 117-135).

Thesis (Ph.D.) - University of Queensland, 2003. / Includes bibliography.

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Doctor of Philosophy / Department of Computer Science / William H. Hsu / The contribution of the proposed dissertation is the application of affective intelligence in human-developed spaces where people live, work, and recreate daily, also known as built environments. Built environments have been known to influence and impact individual affective responses. The implications of built environments on human well-being and mental health necessitate the need to develop new metrics to measure and detect how humans respond subjectively in built environments. Detection of arousal in built environments given biometric data and environmental characteristics via a machine learning-centric approach provides a novel and new capability to measure human responses to built environments. Work was also conducted on experimental design methodologies for multiple sensor fusion and detection of affect in built environments. These contributions include exploring new methodologies in applying supervised machine learning algorithms, such as logistic regression, random forests, and artificial neural networks, in the detection of arousal in built environments. Results have shown a machine learning approach can not only be used to detect arousal in built environments but also for the construction of novel explanatory models of the data.