Psychology Commons^™

A Self-Regulation Model Of Depression: Content Of Cognitive Representations And Prediction Of Treatment Seeking, Catherine Leite

Electronic Thesis and Dissertation Repository

Leventhal's self-regulation model (SRM) was applied as a conceptual framework from which to examine individuals' cognitive representations of depressive symptoms. This thesis explored the nature of these representations, as well as factors that may impact on these representations and, in turn, influence coping strategies and professional help seeking. In particular, Study 1 examined the effect of symptom severity and the label used to identify the symptoms on the cognitive representations of depressive symptoms and coping, whereas Study 2 examined the effect of symptom duration in this regard. This thesis also considered the extent to which the various SRM domains are …

Flexibility In Parent-Child Interactions: The Application Of Dynamic Systems Methodology To Dyadic Processes In Children With Behaviour Problems, Vivien Lee

Electronic Thesis and Dissertation Repository

Dynamic systems theory (DST) can provide a comprehensive account for how parent-child interactions evolve over time to produce stable patterns of interacting and can result in seemingly divergent trajectories. Recent methodological advances using state space grids (SSGs) have provided a graphical means to examine real-time dyadic processes, as well as measures of dyadic flexibility, or the ability to adapt emotional and behavioural responding in response to contextual demands. Higher levels of dyadic flexibility have been associated with improvements in child behaviour problems after treatment (Granic et al., 2007), while its converse, rigidity, has been associated with increases in behaviour …

The Expression Of Religious Bias In The Evaluation Of Foreign-Trained Job Applicants, Caroline Bennett-Abuayyash

Electronic Thesis and Dissertation Repository

This dissertation compromises 2 experiments that investigated religious discrimination as it particularly affects foreign-trained job applicants. Study 1 consisted of a 3 (Applicant’s religion: Christian, Muslim, or No Affiliation) X 2 (Applicant’s location of training: Canada or Cyprus) between-subjects design. After viewing an advertisement for a health-care position, Canadian participants reviewed a male applicant’s CV and watched his taped interview, in which a briefly visible pendant indicated his religious affiliation. The job applicant was then evaluated on two sets of skills: hard (technical) skills and soft (non-technical) skills. As predicted based on the justification suppression model of prejudice (Crandall & …

Specific Contributions Of Ventromedial, Anterior Cingulate, And Lateral Prefrontal Cortex For Attentional Selection And Stimulus Valuation., Daniel Kaping, Martin Vinck, R Matthew Hutchison, Stefan Everling, Thilo Womelsdorf

Brain and Mind Institute Researchers' Publications

Attentional control ensures that neuronal processes prioritize the most relevant stimulus in a given environment. Controlling which stimulus is attended thus originates from neurons encoding the relevance of stimuli, i.e. their expected value, in hand with neurons encoding contextual information about stimulus locations, features, and rules that guide the conditional allocation of attention. Here, we examined how these distinct processes are encoded and integrated in macaque prefrontal cortex (PFC) by mapping their functional topographies at the time of attentional stimulus selection. We find confined clusters of neurons in ventromedial PFC (vmPFC) that predominantly convey stimulus valuation information during attention shifts. …

Perceived Parental Attachment And Achievement Motivation, Mena Bal, Imants Barušs

Psychology

A significant amount of research in attachment theory has been devoted to factors affecting academic achievement, but less attention has been given to the role of attachment in the relation between academic achievement and achievement motivation. The current preliminary study examined the role of perceived parental attachment in achievement motivation. Self-report data obtained from the Parental Attachment Questionnaire, Achievement Goals Questionnaire, and the Performance Failure Appraisal Inventory were collected from 50 university students with a mean age of 18.8 yr. Correlation and regression analyses indicated that parental facilitation of independence correlated significantly and negatively with fear of failure. Results yielded …

Development Of A Cohesion Inventory For Children's Sport Teams, Luc J. Martin

Electronic Thesis and Dissertation Repository

The general purpose of this dissertation was to develop an inventory designed to measure cohesion in children’s (ages 9-12) sport teams. To this end, three studies were conducted. In Study 1, children became active agents in the process of test construction. More specifically, children (N = 167) participated in focus groups and completed open-ended questionnaires in order to provide information on their perceptions of cohesion as well as motives for participating, continuing, and ceasing involvement on sport teams. Study 2 involved the use of the information obtained from Study 1 to develop potential items for the questionnaire. In addition, the …

Paradoxical Reversal Learning Enhancement By Stress Or Prefrontal Cortical Damage: Rescue With Bdnf., Carolyn Graybeal, Michael Feyder, Emily Schulman, Lisa M Saksida, Timothy J Bussey, Jonathan L Brigman, Andrew Holmes

Brain and Mind Institute Researchers' Publications

Stress affects various forms of cognition. We found that moderate stress enhanced late reversal learning in a mouse touchscreen-based choice task. Ventromedial prefrontal cortex (vmPFC) lesions mimicked the effect of stress, whereas orbitofrontal and dorsolateral striatal lesions impaired reversal. Stress facilitation of reversal was prevented by BDNF infusion into the vmPFC. These findings suggest a mechanism by which stress-induced vmPFC dysfunction disinhibits learning by alternate (for example, striatal) systems.

Principles Of Sensorimotor Learning., Daniel M Wolpert, Jörn Diedrichsen, J Randall Flanagan

Brain and Mind Institute Researchers' Publications

The exploits of Martina Navratilova and Roger Federer represent the pinnacle of motor learning. However, when considering the range and complexity of the processes that are involved in motor learning, even the mere mortals among us exhibit abilities that are impressive. We exercise these abilities when taking up new activities - whether it is snowboarding or ballroom dancing - but also engage in substantial motor learning on a daily basis as we adapt to changes in our environment, manipulate new objects and refine existing skills. Here we review recent research in human motor learning with an emphasis on the computational …

The Moderating Effect Of Reciprocity Beliefs On Work Outcomes, Stephanie Hastings

Electronic Thesis and Dissertation Repository

Researchers have long assumed that employees’ reactions to treatment by their organization are guided by reciprocity norms. Eisenberger, Huntington, Hutchison, and Sowa (1986) developed a measure to assess how sensitive employees were to reciprocity obligations, focusing in particular on their beliefs that work effort should depend on treatment by the organization. Since then, research has found that this Exchange Ideology (EI) predicts variables such as organizational citizenship but cannot predict negative outcomes such as workplace deviance. Insight into why this is the case can be found by examining the related construct of reciprocity orientation. Positive (PRO) and Negative Reciprocity Orientation …

Workplace Commitment And Employee Well-Being: A Meta-Analysis And Study Of Commitment Profiles, Elyse R. Maltin

Electronic Thesis and Dissertation Repository

Employee commitments have been connected to a multitude of organizationally- relevant variables, including turnover, absenteeism, job performance, and organizational citizenship behaviours (e.g., Meyer, Stanley, Herscovtich, & Topolnytsky, 2002). Research has repeatedly demonstrated that the form these commitments take matters; that is, research has shown that commitment based on a mindset of affective attachment has the strongest positive relations with desired outcomes, while commitment based on mindsets of social or economic costs has much weaker and sometimes even negative relations with these same outcomes.

Far less research exists on the connection between workplace commitments and their implications for employees themselves, although …

The Power Of Dialogue: Understanding Developmental Origins And Processes Underlying Mother-Child Conversations About Past Emotional Events, Celia Hsiao

Electronic Thesis and Dissertation Repository

Mother-child emotion dialogues represent an integral medium through which children’s autobiography develops. This study sought to understand the developmental origins and processes underlying this co-construction process by examining the inter-relations between: mother-infant attachment relationships, maternal attachment representations, maternal sensitivity during interactions in infancy, maternal affective mindset during toddlerhood, and mother-child emotion dialogues.

Our findings are consistent with past research on the links between the three organized categories of mother-infant attachment relationships and later mother-child emotion dialogues. Children in disorganized attachment relationships displayed a lack of consistent and coherent strategy during emotion communication. Our results emphasize the important role of maternal …

Do I Feel Dissonance Over You? Sex Differences In The Experience Of Dissonance For Romantic Partners, Sandra D. Lackenbauer

Electronic Thesis and Dissertation Repository

The present research investigated sex differences in the experience of cognitive dissonance after decisions made for oneself or for one’s romantic partner. Guided by theory and research suggesting that women and men possess divergent self-construals, I predicted that women would experience more dissonance when making a difficult decision for their partner relative to men. Both men and women were predicted to experience dissonance after decisions made for themselves, although possibly to a lesser degree for women. In two studies, a modified free-choice dissonance paradigm was utilized to test sex differences in the experience of cognitive dissonance, as determined by the …

The Use Of Capacity As An Indicator Of Automatic Processing: Is Smoking Automatic?, Agnes A. Massak

Electronic Thesis and Dissertation Repository

It has been suggested that substance use transitions from a controlled to an automatic process (Tiffany, 1990). In particular, smoking has been found to appear automatic (Baxter & Hinson, 2001). Experienced smokers were able to attend to a reaction time task with minimal interference while smoking. Novice smokers’ performances were impaired when smoking. These results were based on differences in mean reaction times using analysis of variance. Another analytic approach to test the hypothesis that smoking is an automatic process is through the use of capacity coefficients and ratios. These mathematical tools allow for the direct testing of mental processing. …

Contributions Of Signal-Detection Mechanisms And Semantic Memory Representations To Famous Name Recognition, Ben P. Bowles

Electronic Thesis and Dissertation Repository

In past research, investigators have often used the recognition memory paradigm to study the cognitive and neural processes that permit the ability to accurately assess whether or not stimuli are familiar. This paradigm involves presenting stimuli to participants in a study phase, and examining their later recognition of them when these stimuli are subsequently presented again in a later test phase. It is not well understood, however, whether the same mechanisms that support familiarity assessment in recognition memory also support familiarity based on general life experience (e.g., recognizing a famous celebrity in daily life). To address this, I implemented modified …

A Model, Leah K. Hamilton

Electronic Thesis and Dissertation Repository

to be released at conclusion of embargo.

An Investigation Of Masked Priming Mechanisms In Binary Classification Tasks, Jason Perry

Electronic Thesis and Dissertation Repository

The goal of the present research was to examine the nature of masked priming with an emphasis on the influence of stimulus-response (S-R) associations. In Chapter 2, both the magnitude of the category congruence (priming) effect and the nature of the priming distance effect were assessed in two number classification tasks. Participants made either magnitude (i.e., is the target larger or smaller than ‘5’?) or identification judgments (i.e., press one button if the target is a ‘1’, ‘2’, ‘3’ or ‘4’ or the other button if the target is a ‘6’, ‘7’, ‘8’ or ‘9’). Priming distance effects in …

The Prejudice Paradox (Or Discrimination Is Not Dead): Systematic Discrimination In Forced Choice Employment Decisions, Paula M. Brochu

Electronic Thesis and Dissertation Repository

This research examined discriminatory responding in a forced choice employment decision paradigm, using a justification-suppression perspective to interpret the findings. In this paradigm, participants play the role of employers and make employment choices between two excellent and similarly qualified individuals that differ only on one dimension. In the first three studies, participants chose between two individuals who were described as differing only in ethnicity (European vs. Middle Eastern), gender (Male vs. Female), religion (Christian vs. Muslim), age (Young vs. Old), height (Tall vs. Short), weight (Average Weight vs. Overweight), nationality (Canadian vs. Immigrant), or sexual orientation (Heterosexual vs. Homosexual). Patterns …

Judging Covers By Their Books: Malleable Attractiveness Appraisals In Response To Belongingness Feedback, Christopher J. Wilbur

Electronic Thesis and Dissertation Repository

The present research examined biases in appraisals of target attractiveness in response to belongingness feedback. Specifically, I hypothesized that individuals would provide favorable attractiveness appraisals of targets who accept them, and would provide unfavorable attractiveness appraisals of targets who reject them. I hypothesized further that biased appraisals would be most pronounced when people received feedback from opposite-sex targets. Two literatures guided the development of the present research. The first literature underscores the power of reciprocal liking – people like those who like them. In mirror fashion, people are highly critical of targets who deny opportunities for social affiliation. The second …

The Levels Of Analysis Revisited., Scott A Macdougall-Shackleton

Brain and Mind Institute Researchers' Publications

The term levels of analysis has been used in several ways: to distinguish between ultimate and proximate levels, to categorize different kinds of research questions and to differentiate levels of reductionism. Because questions regarding ultimate function and proximate mechanisms are logically distinct, I suggest that distinguishing between these two levels is the best use of the term. Integrating across levels in research has potential risks, but many benefits. Consideration at one level can help generate novel hypotheses at the other, define categories of behaviour and set criteria that must be addressed. Taking an adaptationist stance thus strengthens research on proximate …

Mechanisms Behind The Success Of Exercise As An Adjunct Quit Smoking Aid, Therese M. Harper

Electronic Thesis and Dissertation Repository

It is well documented that temporarily abstinent smokers who undergo an acute bout of moderate intensity exercise experience a reduction in nicotine craving and withdrawal. Conversely, available research in chronic exercise and smoking cessation does not reliably demonstrate that combining exercise with well established treatments increases smoking abstinence rates. The overall aim of this dissertation was to investigate mechanisms underlying the beneficial effects of exercise in a group of female smokers taking part in a 14 week exercise plus nicotine replacement therapy (NRT) patch programme. Determining how smokers may benefit from exercise has important implications for designing effective interventions. Three …

The Importance Of Self-Efficacy And Basic Psychological Needs In Children’S Physical Activity: Measurement, Prediction And Intervention, Casey E. Gray

Electronic Thesis and Dissertation Repository

The importance of physical activity in the overall health promotion and primary prevention of cardiovascular disease risk factors and metabolic diseases in children is well established. Nonetheless, interventions to increase physical activity among this population have been largely unsuccessful. The main objective of the research in this dissertation was to explore the suitability of self-efficacy and basic psychological needs for physical activity prediction and intervention in children. Item generation and psychometric evaluation of psychological questionnaires occurred in study 1 (Chapter 2). Using a prospective design, study 2 (Chapter 3) established task efficacy, barriers efficacy, competence, and autonomy as significant predictors …

Why Clowns Taste Funny: The Relationship Between Humor And Semantic Ambiguity, Tristan A. Bekinschtein, Matthew H. Davis, Jennifer M. Rodd, Adrian M. Owen

Psychology Publications

What makes us laugh? One crucial component of many jokes is the disambiguation of words with multiple meanings. In this functional MRI study of normal participants, the neural mechanisms that underlie our experience of getting a joke that depends on the resolution of semantically ambiguous words were explored. Jokes that contained ambiguous words were compared with sentences that contained ambiguous words but were not funny, as well as to matched verbal jokes that did not depend on semantic ambiguity. The results confirm that both the left inferior temporal gyrus and left inferior frontal gyrus are involved in processing the semantic …

Carving Cognition At Its Joints: Insights From The Interaction Between Explicit And Implicit Social Cognition, Kurt R. Peters

Electronic Thesis and Dissertation Repository

The distinction of cognition into kinds of cognitive process has proven theoretically fruitful and empirically compelling, but there remain significant challenges in deciding how best to carve cognition. First, it is unclear how to design measurement procedures that select distinct kinds of cognitive processing as exclusively as possible and, conversely, how to interpret the results of different kinds of measurement procedure. Second, the distinction between kinds of cognition must be specified with enough precision to derive empirically testable and falsifiable predictions. Third, there must be a reasonable explanation, ultimately compatible with phylogenetic evidence, for the existence of the specified distinction …

The Utility And Feasibility Of Metric Calibration For Basic Psychological Research, Etienne Lebel

Electronic Thesis and Dissertation Repository

Inspired by the history of the development of instruments in the physical sciences, and by past psychology giants, the following dissertation aimed to advance basic psychological science by investigating the metric calibration of psychological instruments. The over-arching goal of the dissertation was to demonstrate that it is both useful and feasible to calibrate the metric of psychological instruments so as to render their metrics non-arbitrary. Concerning utility, a conceptual analysis was executed delineating four categories of proposed benefits of non-arbitrary metrics including (a) help in the interpretation of data, (b) facilitation of construct validity research, (c) contribution to theory development, …

A Social Relations Analysis Of Transactive Memory In Groups, Sarah J. Ross

Electronic Thesis and Dissertation Repository

Transactive memory is the knowledge of what others in a group know and the exchange of that knowledge. In groups with effective transactive memory systems, members know “who knows what”, send knowledge to the appropriate individuals, and develop strategies for retrieving that information (Mohammed & Dumville, 2001; Wegner, 1995). Transactive memory studies tend to focus on the group as a whole, but useful information might be gathered by investigating transactive memory in dyads within groups. The purpose of this research was to use the social relations model (Kenny & LaVoie, 1984) as the basis for operationalizing transactive memory and …

The Nature And Origins Of Attachment In Infancy And Early Childhood: Constructing Life’S Foundations, Greg Moran

Psychology Presentations

No abstract provided.

Prefrontal Cortex Deactivation In Macaques Alters Activity In The Superior Colliculus And Impairs Voluntary Control Of Saccades, Michael J. Koval, Stephen G. Lombar, Stefan Everling

Brain and Mind Institute Researchers' Publications

The cognitive control of action requires both the suppression of automatic responses to sudden stimuli and the generation of behavior specified by abstract instructions. Though patient, functional imaging and neurophysiological studies have implicated the dorsolateral prefrontal cortex (dlPFC) in these abilities, the mechanism by which the dlPFC exerts this control remains unknown. Here we examined the functional interaction of the dlPFC with the saccade circuitry by deactivating area 46 of the dlPFC and measuring its effects on the activity of single superior colliculus neurons in monkeys performing a cognitive saccade task. Deactivation of the dlPFC reduced preparatory activity and increased …

An Observational Assessment Of Peer Group Contributions To Adolescent Identity Development, Tara M. Dumas

Electronic Thesis and Dissertation Repository

The purpose of this study was to demonstrate that interaction-based peer groups play an important role in adolescents’ identity development. Peer group members’ current identity development and peer group interaction processes were examined as predictors of teens’ later identity exploration and commitment. Participants (n = 1070; 522 girls; M_age = 15.45 years) reported on their identity development and a subset of participants took part in an interactive group decision task within peer triads (n = 258; 86 triads). Task-related interactions were coded for support (openness to opinions) or discouragement (teasing of opinions and controlling behaviours) of …

Neuroimaging Social Emotional Processing In Women: Fmri Study Of Script-Driven Imagery., Paul A Frewen, David J A Dozois, Richard W J Neufeld, Maria Densmore, Todd K Stevens, Ruth A Lanius

Psychology Publications

Emotion theory emphasizes the distinction between social vs non-social emotional-processing (E-P) although few functional neuroimaging studies have examined whether the neural systems that mediate social vs non-social E-P are similar or distinct. The present fMRI study of script-driven imagery in 20 women demonstrates that social E-P, independent of valence, more strongly recruits brain regions involved in social- and self-referential processing, specifically the dorsomedial prefrontal cortex, posterior cingulate/precuneus, bilateral temporal poles, bilateral temporoparietal junction and right amygdala. Functional response within brain regions involved in E-P was also significantly more pronounced during negatively relative to positively valenced E-P. Finally, the effect for …

The Effect Of Dopamine Therapy On Ventral And Dorsal Striatum-Mediated Cognition In Parkinson's Disease: Support From Functional Mri., Penny A Macdonald, Alex A Macdonald, Ken N Seergobin, Ruzbeh Tamjeedi, Hooman Ganjavi, Jean-Sebastien Provost, Oury Monchi

Brain and Mind Institute Researchers' Publications

The central aim of our study was to elucidate functions mediated by the ventral and dorsal striatum, respectively, to better understand the cognitive effects of dopamine replacement in Parkinson's disease. We proposed that the ventral striatum underlies general learning of stimulus associations, whereas the dorsal striatum promotes integration of various influences on selecting. In Parkinson's disease, dopamine depletion is substantially less notable in the ventral relative to the dorsal striatum, and therefore greater improvements are expected for dorsal striatum-mediated functions with dopamine replacement. Using a simple selection task, we found that dopamine replacement impaired encoding and facilitation of consistent stimulus-stimulus …