Digital Commons Network^™

The Need For Purpose: The Desire For Meaningful Direction As A Fundamental Human Motivation, Jose A. Espinoza Mogollon

Electronic Thesis and Dissertation Repository

The present research investigated the hypothesis that humans have an innate and fundamental need for purpose. This need is defined as a pervasive drive for a sense of meaningful direction and the experience of progress toward associated objectives. First, theoretical development of the need for purpose is presented, along with a review of the existing research literature covering evidence for the need for purpose’s fulfillment of well-established criteria for evaluating needs. This review is followed by three empirical studies developing a measure assessing satisfaction and frustration of purpose, examining an initial nomological network of the construct, and testing whether purpose …

The Development, Short-Term Efficacy, And Pilot Implementation Of An E-Learning Course In Physical Activity And Sedentary Behaviour For Pre-Service Early Childhood Educators, Brianne Bruijns

Electronic Thesis and Dissertation Repository

The overarching purpose of this dissertation was to develop an e-Learning course in physical activity and sedentary behaviour and test its short-term efficacy and implementation among pre- and in-service early childhood educators (ECEs). The Delphi approach was adopted for Study 1, wherein a panel of international experts in physical activity and sedentary behaviour suggested topics for the course and, together with a panel of ECE experts, rated their importance. Study 2 employed a pre-post design to explore the changes in pre- and in-service ECEs’ physical activity and sedentary behaviour-related knowledge, self-efficacy, behavioural intention, and perceived behavioural control following course completion. …

The Attitudinal And Motivational Consequences Of Personality Differences In Teams, Kyle A. Cameron

Electronic Thesis and Dissertation Repository

In our team-based world of work, understanding the effects of team member differences is critical. This research examined the effects of personality congruence (i.e., (dis)similarity) on individual team members’ satisfaction with the team and autonomous motivation. The potential role of psychological need fulfillment as a mediator of the relation between personality congruence and these outcomes was also considered.

Multilevel polynomial regression with response surface analysis provided no evidence for a congruence pattern relating any of the HEXACO model of personality’s six domains to individual satisfaction with the team, autonomous motivation, or any of the psychological needs. Supplemental analyses revealed a …

Neuroimaging Depression Risk In A Sample Of Never-Depressed Children, Matthew R. J. Vandermeer

Electronic Thesis and Dissertation Repository

Children of mothers with a history of depression are at significantly higher risk for developing depression themselves. Although numerous mechanisms explaining this relationship have been proposed (Goodman & Gotlib, 1999), relatively little is known about the neural substrates of never-depressed children’s depression risk. Of the few studies that have used neuroimaging techniques to characterize risk-based differences in children’s neural structure, function, and functional connectivity, most have used samples that include participants with a personal history of depression or older samples (i.e., past the typical age of onset for depressive disorders). These approaches limit what can be determined regarding whether findings …

Bridging The Gap: Building More Collaborative Psychoeducational Assessment Practices, Sarah E. Babcock

Electronic Thesis and Dissertation Repository

The identification process of learning challenges in children is diverse and multifaceted, but typically involves standardized assessment with a psychologist. And while cognitive ability assessment is an integral and informative part of the process, one major concern is that the integration of teacher and parent observations into Canadian psychoeducational evaluation process has, thus far, not been a key source of information guiding diagnosis and intervention. Another concern is that formalized assessments often have long wait times, which delays support to the child. Therefore, evidence-based measures are needed to integrate teacher and parent observations and streamline the assessment process. The purpose …

Unmade And Unmanned Men: Reading Traumatized Masculinity In Late Nineteenth-Century British Adventure Fiction Through The Lens Of The Indian “Mutiny” Of 1857, Madison A. Bettle

Electronic Thesis and Dissertation Repository

Unmade and Unmanned Men: Reading Traumatized Masculinity in Late Nineteenth-Century British Adventure Fiction through the Lens of the Indian “Mutiny” of 1857 examines the selected adventure fiction of George Alfred Henty, Rudyard Kipling, and Joseph Conrad through the historico-political context of India’s First War of Independence, known in Victorian Britain as the Indian “Mutiny” of 1857. Examining masculine trauma in adventure fiction reveals how British men, who were themselves colonized by the Empire’s expectations of them, sought not only to recover from the scars inflicted by imperialism, but also to expose the Empire for inflicting the psychologically damaging expectations that …

Exploring The Role(S) Of Trait Emotional Intelligence & Personality In Help-Seeking Behaviour Among Undergraduate Students, Nikola Cuvalo

Electronic Thesis and Dissertation Repository

Trait emotional intelligence (EI) and the Big Five personality factors represent promising constructs in the individual differences literature that have been investigated in relation to help-seeking behaviour. This quantitative work explores the relationship between individual differences in trait EI, personality, and attitudes toward – as well as future intentions to engage in – help-seeking behaviour among undergraduate students at Western University. Stepwise regression modelling was used to determine which dimensions of personality and trait EI best predicted help-seeking outcomes and whether attitudes toward help-seeking predicted intentions to seek help from university-provided mental health sources. Resultsindicated that several individual facets of …

Investigating The Role Of Targeted Memory Reactivation In Sleep Spindle Production, Justin W. Hopper

Electronic Thesis and Dissertation Repository

In ‘targeted memory reactivation’ (TMR) paradigms, information learned during wakefulness is paired with a cue, and reactivated during sleep by presenting that same cue. TMR improves memory. In a prior study (Antony et al., 2012), participants learned two melodies. One melody was cued during a nap, and performance was better than for the uncued melody. The current study reanalyzed these data to characterize sleep spindle density during TMR cue-periods relative to non-cued periods, and whether spindle density correlated with performance. During TMR stimulation, spindle density was significantly higher than during non-stimulation in four time windows. Compared to the non-TMR group, …

The Expression Of Guilt, Chloe A. Stewart

Electronic Thesis and Dissertation Repository

Though aversive, the experience and expression of guilt is important to healthy social functioning. Guilt is often described as visceral, and nonverbal guilt expressions are anecdotally observed, yet much remains unknown about how guilt is expressed. The present work aimed to explore the visceral experience of guilt via the autonomic nervous system (ANS), and the nonverbal display of guilt via facial, gestural, and postural expressions. Using a novel film paradigm, we explored ANS activity during guilt in healthy adults and adults with neurodegenerative disorders (NDs). We further explored the nonverbal behaviours associated with guilt in healthy adults. We hypothesized that, …

Evidence-Based Programming For Vulnerable Youth: Successes And Challenges Of Implementing Healthy Relationships Programs In Diverse Settings, Rachelle M. Graham

Electronic Thesis and Dissertation Repository

In recent years a variety of evidence-based programs have been developed to promote mental health and reduce violence among youth, including those considered to be the most at risk. However, simply providing evidence-based programming to settings that serve vulnerable youth does not ensure the efficacy of these programs because of the unique contextual factors, strengths, and needs of those youth and settings. There is often a disparity between the efficacy of a program identified in a research context and the effectiveness of a program in its application in real world settings. The purpose of this study was to explore this …

Neural Markers Of Musical Memory In Young And Older Adults, Avital Sternin

Electronic Thesis and Dissertation Repository

Memory for music can be preserved in the presence of neurodegenerative disorders even when other memories are forgotten. However, understanding how the brain remembers music has proven difficult despite decades of research. The central goal of this thesis was to elucidate the neural correlates of musical memory by exploring how the presence of language and music information affect the way young and older adults remember music. To that end, I 1) used a controlled training paradigm to familiarize participants with novel stimuli that manipulated the presence of language and music, and 2) collected functional magnetic resonance imaging data to compare …

Empathic Processing In Patients With Mild-To-Moderate Stroke, Hilary Dagg

Electronic Thesis and Dissertation Repository

Recent lesion studies have indicated that regions of the human prefrontal cortex play a critical role in empathy; however, these lesion studies often include patients with severe head injuries. The present study utilizes a cohort of 84 patients with cerebrovascular disease with mild-to-moderate strokes to examine the neural regions involved in empathy. We hypothesized that dissociable areas of the prefrontal cortex are involved in empathy. We predicted that lesions to the inferior prefrontal cortex would result in deficits in empathy compared to superior prefrontal lesions, non-prefrontal lesions, and those with no detectable lesions. To measure empathy, caregiver ratings were obtained …

The Effectiveness Of The Protection Motivation Theory In Reducing Vaping Behaviour In A Student Population, Babac Salmani

Electronic Thesis and Dissertation Repository

A threat appraisal model grounded in Protection Motivation Theory (PMT) determined whether providing health information regarding perceived severity (PS) and perceived vulnerability (PS) of vaping health complications, corroborates with reduced vaping-related intention and habitual behaviour. Seventy-seven regular vapers (22.21 ± 3.47 years) registered within a Canadian university were randomized into one of two groups, wherein the aforementioned threat appraisal information was present. Participants in the experimental group (n = 41) watched an 8-minute information video a week after baseline, following the threat appraisal components of PMT. Those in the attention control group (n = 36) watched an information video on …

Improving The Accuracy Of References: The Effects Of Felt Accountability On Personality Ratings, Cullen W. D. Mccurrach

Electronic Thesis and Dissertation Repository

References are a useful preemployment assessment for gathering unique personality information about job applicants. However, despite the capacity for external observers to provide valid personality ratings, references tend to be less accurate than similar preemployment assessments. This problem is important to address, since almost all organizations use references of some kind when hiring. This study attempted to improve the accuracy of the personality ratings provided in references by using two novel interventions believed to improve referees’ felt accountability to the hiring organization. These interventions included (a) a more elaborative rating format that asked participants to provide the reasons underlying each …

The Role Of Top-Down Attention In Statistical Learning Of Speech, Stacey Reyes

Electronic Thesis and Dissertation Repository

Statistical learning (SL) refers to the ability to extract regularities in the environment and has been well-documented to play a key role in speech segmentation and language acquisition. Whether SL is automatic or requires top-down attention is an unresolved question, with conflicting results in the literature. The current proposal tests whether SL can occur outside the focus of attention. Participants either focused towards, or diverted their attention away from an auditory speech stream made of repeating nonsense trisyllabic words. Divided-attention participants either performed a concurrent visual task or a language-related task during exposure to the nonsense speech stream, while control …

A Sense Of Proportion: How Humans Process Relative Magnitudes In Space And Time, Rebekka Lagace-Cusiac

Electronic Thesis and Dissertation Repository

Humans perceive ratios for different spatial magnitudes such as length, area, and numerosity, and temporal magnitudes such as duration. Previous studies have shown that spatial ratios may be processed by a common ratio processing system. The aim of the current study was to determine whether ratios across spatial and temporal domains may also be processed by a common system. Two hundred and seventy-five participants completed a series of spatial and temporal ratio estimation and magnitude discrimination tasks. Structural equation modeling (SEM) was used to analyze the relationship between ratio processing across domains when controlling for absolute magnitude processing ability. Results …

Does Aberrant Connectivity Underlie The Experience Of Misophonia?, Kate Raymond

Electronic Thesis and Dissertation Repository

Misophonia is a condition characterized by an extreme aversion to certain ordinary sounds, such as chewing or breathing. These sounds are typically innocuous but elicit strong feelings of anger, anxiety, and disgust as well as physiological stress in people with misophonia. This misophonic reaction to “trigger” sounds is also marked by increased activity in regions of the brain that process sound, ascribe salience, and regulate emotion (Kumar et al., 2017; Schroder et al., 2019). It has therefore been theorized that aberrant connectivity between these brain regions (particularly the anterior insula, auditory cortex, amygdala, and hippocampus) may underlie the experience of …

'The Memory Of All That': The Effects Of Music On Paradoxical Lucidity In Older Adults, Sarah Klapman

Electronic Thesis and Dissertation Repository

Some individuals with dementia experience unexplained periods of improved cognition in response to music. We examined the effects of music tempo and familiarity on a cognitively demanding task to replicate this improvement. We had 37 healthy older adults (21 females, mean age 67.5, SD = 5.49) complete a divergent thinking task before and after listening to a 25-minute personalized playlist. Playlists contained music that was either familiar or unfamiliar and either fast or slow. We expected participants in the familiar and fast conditions to score significantly better on the task after listening than those in the unfamiliar and slow conditions, …

Students Adrift: An Examination Of School Disengagement Among Clinically Referred Children And Youth, Janell A. Klassen

Electronic Thesis and Dissertation Repository

School disengagement is a significant problem experienced by many students and may be an indicator of or resultant from underlying difficulties. Indeed, the first onset of mental health difficulties typically occurs during childhood and adolescence. Utilizing large clinically referred samples of elementary and secondary school students at intake into community and inpatient mental health service agencies across the Province of Ontario, Canada, school disengagement was explored as associated with physical and mental health as well as peer and familial relationships, other and self-directed harm, and service intensity need. Age and sex differences were explored across studies to inform the development …

Audiovisual Integration In Cochlear Implant Users And Typical Hearing Controls: A Study Of Group Differences In Syllable Perception And Effect Of Asynchrony On Speech Intelligibility, Cailey A. Salagovic

Electronic Thesis and Dissertation Repository

This study examined audiovisual integration in cochlear implant (CI) users compared to typical (acoustic) hearing control participants and investigated the effect of audiovisual temporal asynchrony on speech intelligibility across these groups. Additionally, this study evaluated the utility of online data collection for audiovisual perception research. In Experiment 1, CI users were found to integrate audiovisual syllables comparably to controls as demonstrated by perception of the McGurk illusion. However, group differences were revealed in the processing of the unisensory components and underlying distributions of responses to incongruent audiovisual trials when the illusory fusion syllable was not reported. In Experiment 2, intelligibility …

Likelihood And Familiarity In The Simulation Of Future Events, Claudia Morales Valiente

Electronic Thesis and Dissertation Repository

Episodic future thinking is the ability to project the self forward in time to pre-experience an event (Atance & O’Neill, 2001). Understanding how people think about potential future events is an important component of human memory research. We investigated whether and how episodic future thinking is influenced by a person's belief of the likelihood of its future occurrence in their lives, as well as a person's familiarity with that type of event based on their past experience. The combined and individual effects of these variables have been minimally studied, particularly likelihood. We used three norming studies to develop participant-specific sets …

Trends In Mental Health Service Use Among Youth And Emerging Adults In Canada, Thipiga Sivayoganathan

Electronic Thesis and Dissertation Repository

Mental disorders among youth (age 12 to 17) and emerging adults (18 to 24) in Canada are common, but few receive mental health (MH) services. We examined trends in patterns and predictors of MH service use in this population. Secondary data analyses were conducted on six cycles of the Canadian Community Health Survey (2011 to 2016). From 2011 to 2016, the prevalence of MH service use increased by 4.3%. In 2016, 85.1% of those with poor self-rated MH accessed services, greater than in previous years; however, this subgroup represents only 1% of the total population. Psychiatrists had the largest provider …

More Than Just Shying Away From Conflict: The Relationship Between Social Anxiety And Workplace Incivility, Jocelyn Brown

Electronic Thesis and Dissertation Repository

For individuals who experience social anxiety, the workplace presents unique obstacles as they fear the social interactions. In particular, these individuals may struggle with workplace incivility. This study used questionnaires and vignettes to determine if the severity of social anxiety is related to heightened reports of social anxiety in their own workplace as well as increased negative valance associated with incivility events. In addition, the influence of various forms of self-efficacy and social support at work was measured. It was found that social anxiety increased reports of incivility at work. Self-efficacy had a nonsignificant influence and social support at work …

Visual Perception In Hearing Sign Language Users, Jessica M. Lammert

Electronic Thesis and Dissertation Repository

Deaf signers exhibit superior visual perception compared to hearing controls in several domains, including the perception of faces and peripheral motion. These visual enhancements are thought to compensate for an absence of auditory input. However, it is also possible that they reflect experience using a visual-manual language, where signers must process complex moving hand signs and facial cues simultaneously. Thus, the current study sought to isolate the effects of sign language experience by examining how visual perception is altered as a function of American Sign Language (ASL) proficiency in hearing individuals. Hearing signers completed an online test of ASL proficiency …

The Relationship Between Neighbourhood-Level And Family-Level Factors And Sleep Problems Among Children And Youth, Katarina Mckenzie

Electronic Thesis and Dissertation Repository

There is little research on the effects of neighbourhood factors on child sleep outcomes. No study to date has investigated the interactive effects of neighbourhood and family socio-economic characteristics (SECs) on child sleep outcomes. This study aimed to fill this gap. Secondary data analyses were completed on two samples (children and youth) from the 2014 Ontario Child Health Study, a cross-sectional, province-wide sample of 10,802 children aged 4 to 17. Multi-level modeling was used to assess the relationship between child- (e.g., age), family- (e.g., negative parenting) and neighbourhood-level factors and their relationship to sleep outcome variables: problems falling asleep, problems …

Individual Differences And Social-Comparative Feedback, Kabir N. Daljeet

Electronic Thesis and Dissertation Repository

The purpose of the overall program of research was to investigate whether there are individual differences that facilitate the acceptance of, or preferences for, social-comparative performance feedback. In doing so, we aimed to establish how individual differences could be leveraged to mitigate the negative reactions that some individuals experience in response to social-comparative feedback (Feeney, Goffin, & Schneider, 2016; Roch et al., 2007). Likewise, we sought to determine whether individual differences were associated with a preference for social-comparative feedback. The results of the first study (N = 255) advanced a novel experimental design and found that, with limited exception, …

Testing Competing Mediation Models Of The Effects Of Weight Bias Internalization And Weight Suppression On Disordered Eating In Young Adults, Samantha J. Withnell

Electronic Thesis and Dissertation Repository

The current study investigated a novel theoretical model of longitudinal relations between weight bias internalization (WBI), weight suppression, and disordered eating. Undergraduate students (N = 787) completed surveys at three time points. Path analysis was used to test competing models representing the temporal order of effects between WBI and weight suppression on disordered eating symptoms. Neither pathway was supported by the data, indicating that WBI and weight suppression were not related over time. However, results supported distinct effects of WBI versus weight suppression on the prediction of overall disordered eating, binge eating, and body dissatisfaction over six-month follow up. …

Validating An Observational Coding System For The Dominance Behavioural System (Dbs) In Childhood, Jennifer Mullen

Electronic Thesis and Dissertation Repository

The dominance behavioural system (DBS) is a biologically based system that underpins individual differences in motivation for dominance and power. However, little is known about the DBS in childhood. In a pilot study aimed at developing a behavioural coding system for dominance, a key facet of the DBS, we collected and coded observational data from 58 children, assessed at ages 3 and 5-6. Between these ages, dominance was moderately stable, to a degree comparable to other early child temperament traits. Consistent with study hypotheses, boys were more dominant than girls, and dominance was negatively associated with children’s behavioural inhibition, effortful …

Why Do People Engage In Eating Disorder Behaviours?, Abbigail Kinnear

Electronic Thesis and Dissertation Repository

Eating disorders (EDs) are serious mental illnesses often with poor prognosis. Personalizing evidence-based treatments based on an individual’s reasons for engaging in ED behaviours – or the functions of EDs – may improve treatment outcomes; however, no validated measures assessing these functions exist. The goal of this study was to complete the initial steps in developing a measure of ED functions. Individuals who engage in ED behaviours (n = 16) and clinicians who treat EDs (n = 14) were interviewed, and a thematic analysis was conducted to determine key functions of EDs. Four main functions of EDs were …

Examining The Feasibility Of Delivering A Multi-Component Virtual Lifestyle Medicine Program For Adults With Type 2 Diabetes, Madison S. Hiemstra

Electronic Thesis and Dissertation Repository

BACKGROUND: The virtual delivery of lifestyle medicine programs (e.g., via web-conferencing platforms) can increase program accessibility for adults living with type 2 diabetes (T2D). PURPOSE: To assess the feasibility of virtually delivering a multi-component group-based lifestyle medicine program that uses wearable technologies and exercise prescriptions in an adult population with T2D. METHODS: This was a six-week, single-cohort feasibility study. The virtual lifestyle medicine program included live-video delivery of group education classes, one-on-one exercise counselling phone calls, flash glucose monitors, wearable activity monitors, and exercise prescriptions. Several feasibility outcomes were assessed including recruitment and retention rates, acceptability (e.g., exit survey), and …