“Positive illusions” refer to the tendencies to perceive the self and others positively. The current study proposes that cultural norms regarding positive illusions contribute to cultural differences in well-being. All pairs of participants completed self-reports and informant reports, and served both as perceivers and targets (N = 906 undergraduate students). A novel validated measure of positive illusions and multi-method assessment of well-being were used to examine cultural differences between Asians and Westerners in well-being. Positive illusions were assessed by means of the halo-alpha-beta model of correlations among ratings of participant’s own and an acquaintance’s personality on the Big Five dimensions (Anusic, Schimmack, Pinkus, & Lockwood, 2009). The results suggest that rating biases influence cross-cultural comparisons of well-being and that European and Asian Canadians have similar levels of well-being.

The current study attempted to discern the extent to which a gender bias influences the adult ratings of observed childhood pain. While gender differences in pain sensation are well documented in physiologically mature individuals, there seems to be no such difference in children. The effect of manipulating gender on the procedural pain ratings of 201 university undergraduate and nursing students was examined via a deceptive pain observation task. Results demonstrated no significant difference between gender conditions; however a strong link was established between prior exposure to painful pediatric medical procedures and lower pain ratings. The results suggest that, while a gender bias failed to alter pain ratings, desensitization to viewing painful procedures could alter how much pain healthcare professionals believe a patient is experiencing.

Reasoners who adopt the perspective of another can increase the proportion of logically valid inferences they make (Thompson, Evans, & Handley, 2005). A possible explanation is that shifting perspective promotes analytic reasoning. If this were the case, then shifting perspectives should also reduce the belief-bias effect. Furthermore, strong evidence should be preferred over weak evidence. To test this, 256 participants read twenty-four research descriptions that varied in evidence quality and degree of personal belief content. Participants indicated whether the data supported the researchers hypotheses. Belief bias was reduced when participants evaluated the data from the researchers perspective relative to their own. Evidence strength was an important determining factor in decision-making and it was sensitive to perspective and individual differences.

In four experiments we used eye-tracking to investigate biases in looking behaviour during visual decision making tasks. In Experiment 1, participants viewed arrays of images of photographic art and decided which image was preferred (from a set of either two or eight alternatives). To analyze gaze behaviour during the decision we identified dwells (where a dwell is a series of consecutive fixations on a decision alternative). This analysis revealed two forms of gaze bias in the period prior to the response. Replicating prior findings (Shimojo, Simion, Shimojo, & Scheier, 2003), just prior to the response we found an increase in the frequency of dwells on the chosen item. In addition, throughout the decision, dwells on the chosen item were longer than dwells on other items. This pattern of biases was extremely similar across preference and non-preference decision instructions, but overall the biases were more pronounced in eight alternative decisions than in two alternative decisions. In Experiment 2 we manipulated the number of decision alternatives while controlling for differences in the stimulus displays. Participants viewed displays containing six everyday items, and chose either which of two sets of three items was the most expensive (two alternative set selection task) or which of the six items was the most expensive (six alternative item selection task). Consistent with Experiment 1, participants exhibited greater selectivity in their processing of stimulus information in the six alternative decisions compared to the two alternative decisions. In Experiments 3 and 4 we manipulated stimulus exposure in order to test predictions derived from the Gaze Cascade model (Shimojo et al., 2003). In Experiment 3, participants performed an eight alternative decision in which four of the items had been pre-exposed prior to the decision. In Experiment 4, stimulus exposure was manipulated during the ongoing decision using a gaze-contingent methodology. While these manipulations of stimulus exposure had strong effects on gaze bias, the specific predictions of the model were not supported. Rather, we suggest an interpretation based on prior research, according to which the gaze bias reflects the selective processing of stimulus information according to its relevance to the decision task.

Since its creation in 1998, the Implicit Association Test (IAT) has become a commonly used measure in social psychology and related fields of research. Studies of the cognitive processes involved in the IAT are necessary to establish the validity of this measure and to suggest further refinements to its use and interpretation. The current thesis used ERPs to study cognitive processes associated with the IAT. The first experiment found significant differences in P300 amplitude in the Congruent and Incongruent conditions, which were interpreted as a reflection of greater equivocation in the Incongruent condition. The second experiment tested the task-set switching account of the IAT in much greater detail by analyzing each trial type separately. In the Congruent condition, all trial types elicited the same amplitude P300. Local probability, and the consequent checking and updating of working memory, was thought to be responsible for differences between trials of the Incongruent condition that required or did not require a task switch. The final experiment examined the role of working memory in the IAT by introducing obtrusive and irrelevant auditory stimuli. The results of Experiment 3 indicated that the introduction of an obtrusive and irrelevant auditory increment deviant has little overall effect on the IAT, and a similar effect on switch and no-switch trials within the Incongruent condition. This could have been because both the Congruent and Incongruent conditions of the IAT make such extensive demands on central processing resources that few are available to allow for the switching of attention, or it is possible that the IAT does not require significant updating of working memory. The usefulness of ERPs in the study of the IAT effect is demonstrated by the current research. In particular, the finding that behavioural results were not always consistent with the ERP results demonstrates that electrophysiological measures can complement traditional behavioural measures.

Exploring the relationship between prejudice and ethical decision-making within individuals that wish to pursue a career in the field of criminal justice has the potential to yield valuable insights on the ways that moral decisions may be impacted by extraneous factors. The objective of this thesis was to explore this relationship by means of quasi-experimental design and through examining 30 potential criminal justice candidates. Results suggested that significant associations between explicit racial attitudes and ethical decision-making are largely context-specific. Conversely, there was no significant relationship found between implicit racial attitudes and decision-making. In conducting this study, a better understanding of the role that explicit factors contribute within the decision-making process was revealed and a gap within the literature was identified. Also worthy of note, this study was the first known research inquiry into the relationship between both implicit and explicit attitudes and ethical decision-making within a Canadian criminological setting.

Using secondary data from Pew's Early January 2004 Political Communications Study this thesis explains political identification, the range of media sources that a person uses, perceptions of political party bias and political participation using information about media use and perceptions of the media. The survey, which was conducted during the winter of 2003/2004, includes responses from 1506 individuals. Analytic techniques include means breakdowns, crosstabulations, correlations and multiple regression. Many associations are identified; however, in general, the media related variables were weakly related to dependent variables. The thesis speculates that the weak relationships can be attributed to a homogeneous range of available media content. Connections between the recent growth in the number of media sources and diversity in media content are discussed. The analysis finds that listening to talk radio, religious radio and watching the Fox News Channel were weakly associated with conservatism while use of non-profit media, including use of National Public Radio (NPR), the Cable-Satellite Public Affairs Network (C-SPAN) and the Public Broadcasting Service (PBS) were weakly associated with liberalism. The thesis questions if the use of "sound bites" used on talk radio programs and some 24-hour television news channels is related to the conservatism of these audiences. A positive relationship between the amount of bias that a person sees in the news media and the range of news sources that a person uses was found. Sources include Internet, television and print media. The implications of these findings in the context of the agenda-setting framework and a homogenous media are discussed. Use of the Fox News Channel and talk radio were associated with perceptions of a Democratic Party bias in the news media. Ideas from Bourdieu and Passeron are used to understand how communication styles are related to the perception of talk radio as an alternative to the "liberal media". The implications of the prevalence of the perception of a "liberal media" are discussed and related to theoretical work from Gramsci and Abercrombie. Media that attempt to add diversity through new operational models are described. Associations between political participation and several types of media use were found. The finding that use of comedy television is related to some indicators of political participation is seen as demonstrating the difficulty in distinguishing information from entertainment-oriented programming. The analysis questions assumptions about the relationships between media use, electoral cynicism and political participation. The thesis argues that better tools from examining media use in general and in the Canadian context are needed.

The belief bias effect – the finding that prior beliefs influence judgments of logic and evidence – has been a topic of much empirical investigation in both deductive and causal reasoning. However, to date, no research has examined the degree to which such biases are the result of common or distinct mechanisms in these two domains. By using common scales of measurement, I examine the degree to which individuals show common biases in these two domains in two experiments. Surprisingly, although the belief bias effect was observed in both paradigms, biases in one domain were unreliably associated with biases in the other domain. Experiment 2 included 6 measures of individual differences in an attempt to uncover the observation of differential biases in these domains. Dogmatism was found to be the single most predictive measure of belief bias, but only in deductive reasoning. These data are discussed in terms of dual process theories of reasoning.

The intergroup contact effect is well-documented in the research literature (for a meta-analysis see Pettigrew & Tropp, 2006). Although researchers have identified a few moderators of the contact effect, the constraints under which the contact effect is optimally effective are not well understood. The current research explored two individual difference measures related to anti-gay attitudes, AIDS stigma and motivation to respond without prejudice (internal and external motivation), as potential moderators of the contact effect on heterosexual men’s attitudes towards gay men. Results indicated that increased external motivation and AIDS stigma hinder the benefits of contact for anti-gay attitudes. Implications of these findings for understanding how intergroup contact serves as a prejudice-reduction technique are discussed.

The purpose of the current study was to evaluate changes in attentional biases following CBT for Social Phobia. It was found that 1.) consistent with previous investigations, the overall sample displayed vigilance toward threatening facial stimuli prior to receiving treatment, and 2.) participants’ pattern of responding to threatening facial stimuli changed following treat-ment, but only when the sample was divided into those who were vigilant and those who were avoidant prior to treatment. Findings provide support for the presence of two distinct sub-groups with differing attentional styles, one with a tendency for vigilance toward social threats, and a second with a tendency to avoid threat cues. These findings have important implications for how individuals may differentially respond to treatment and may help explain some of the mixed findings in the extant literature on Social Phobia and attention bias.