Psychology Commons^™

Development And Validation Of The Pain Resilience And Optimism Scale (Pros), Wonjin Seo

Electronic Thesis and Dissertation Repository

Numerous self-report questionnaires have been used in pain research to explore patients' experiences. However, these questionnaires often employ negatively worded items that can potentially worsen patients' distress. In response to the emergence of positive psychology, this thesis aimed to develop a new questionnaire that adopts a positive and strengths-focused approach, incorporating resilience, to replace the negative items found in existing tools such as the Pain Catastrophizing Scale (PCS). First, the effectiveness of the Connor-Davidson Resilience Scale (CD-RISC) in measuring resilience following trauma was assessed through a systematic review using the COnsensus-based Standards for the selection of health status Measurement INstruments …

Disordered Eating Behaviours In Adolescents With And Without A Formal Ed Diagnosis: Comparing Individual And Contextual Factors, Eve G. Chapnik

Electronic Thesis and Dissertation Repository

This study explored various psychosocial factors associated with disordered eating in adolescents accessing mental health services across Ontario, Canada. Data were collected using the interRAI Child and Youth Mental Health (ChYMH) assessment tool and participants were categorized into three groups: individuals with diagnosed eating disorders (ED, n=207), disordered eating without a formal ED diagnosis (sub-ED, n=888), and other treatment-seeking youth (non-ED, n=3285). The ED and sub-ED groups did not differ in many ways, presenting with a similarly greater prevalence of mental health issues, and dysfunctional family and peer relationships, in comparison to non-ED youth. However, the ED …

Professionals' Application Of Intersectionality With Marginalized Youth: Considerations For Teen Dating Violence Prevention Programming And Beyond, Bradley Kyle Daly

Electronic Thesis and Dissertation Repository

Marginalized youth disproportionality experience adverse outcomes such as increased rates of mental health issues and teen dating violence. Addressing their compounding concerns requires an approach that considers their interlocking marginalized identities and the oppressive systems impacting them. Intersectionality incorporates both elements, yet the literature on how frontline practitioners understand and apply this complex theory within their practice remains sparse. This integrated-article dissertation explored how professionals working with marginalized youth within various settings, including teen dating violence prevention contexts, understood and applied intersectionality. The first paper (chapter two) used group concept mapping to explore how 12 professionals applied intersectionality. Results yielded …

An Empirical Examination Of The Dyadic Partner-Schema Model Of Relationship Distress And Depression, Jesse Lee Wilde Ms.

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Romantic relationship discord is prevalent in depression and has been repeatedly associated with poor prognosis for the disorder. Although a significant body of literature has examined the ways in which depressive self-schema structures (SSS) are implicated in depression, a paucity of research has investigated the role of partner-schema structures (PSS) in the disorder. The Dyadic Partner Schema Model (DPSM; Wilde & Dozois, 2019) was recently developed as a novel theoretical model of the mechanisms that maintain relationship distress in depression. This dissertation provided the first direct empirical examination of the DPSM by examining four main research questions: (1) how are …

Exploring The Impact Of Mood States On Motivation To Consume Food And Non-Food Rewards In Individuals With Loss Of Control Eating, Kendall M. Schmidt

Electronic Thesis and Dissertation Repository

Introduction. Loss of control (LOC) eating episodes are eating episodes in which an individual feels they cannot control what or how much they are eating, regardless of the amount of food consumed. These episodes are associated with significant psychological distress, psychiatric comorbidity, and reduced quality of living. Both negative affect and heightened reward processing of food have been posited as mechanisms that contribute to LOC eating. However, few studies have investigated whether negative affect influences reward processing of food and/or non-food rewards in individuals with LOC eating. Understanding how purported mechanisms of LOC work in conjunction may help to …

The Developmental Importance Of Napping In Preschool Children, Adam T. Newton

Electronic Thesis and Dissertation Repository

Most children cease napping between 2- and 5-years-old. Little is known about the predictors or outcomes related to this cessation, or the interrelation of different components of nap behavior. Four empirical studies were conducted to investigate the developmental importance of napping among preschool children.

Studies 1 and 2 used a large, longitudinal sample of Canadian children to investigate the predictors (Study 1) and outcomes (Study 2) related to early nap cessation. Early nap cessation was defined as stopping daytime sleep before three years old. In Study 1, parents reported on their own, child, and family functioning at two timepoints (0-1 …

The Initial Development, Factor Structure, And Psychometric Validation Of The Impostor Phenomenon Assessment (Ipa): A Novel Assessment Of Impostor Phenomenon, Deanna L. Walker

Electronic Thesis and Dissertation Repository

Despite growing attention surrounding impostor phenomenon (also known as “imposter syndrome”), recent reviews have suggested that current measures may be inadequate in capturing the complex and multifaceted nature of this construct (i.e., thoughts, feelings, and behaviours). The objective of my dissertation research program was to clarify the theoretical conceptualization of impostor phenomenon based on experiences in an achievement-oriented setting, and to develop a novel and psychometrically valid method of measuring this construct. I began by conducting an extensive review of the literature and developing an item pool for a novel impostor phenomenon assessment. I then conducted exploratory factor …

Early Childhood Impulsivity And Parenting Predict Trajectories Of Externalizing Psychopathology, Emma Stewart

Electronic Thesis and Dissertation Repository

Parenting is a consistent predictor of child externalizing symptoms; however, the role of caregiving variability (i.e., variation in a caregiver’s parenting behaviour) is poorly understood. We examined whether characteristic parenting style and parenting variability predicted externalizing symptoms in 409 children (M_age = 3.43 at baseline, 208 girls). We assessed parent positive affectivity (PPA), hostility, and parenting structure at child age three using three behavioural tasks designed to vary in context, examining variability by modeling a latent difference score reflecting the range for each dimension. We assessed children’s symptoms at ages three, five, eight, and 11. Lower hostility predicted fewer …

The Impact Of An Online Self-Compassion Intervention On Thwarted Belongingness And Perceived Burdensomeness, Genevieve M. Bianchini

Electronic Thesis and Dissertation Repository

Interventions that target thwarted belongingness (TB) and perceived burdensomeness (PB) may reduce suicidal thoughts and behaviours (Joiner, 2005). Self-compassion describes being open and kind towards oneself (Neff, 2003a) and is negatively associated with TB, PB, and suicidality. The current research examined the impact of a brief, virtual, self-compassion intervention on TB and PB in a young adult sample. Study 1 included an open trial to examine initial effectiveness and acceptability of the intervention. Self-compassion significantly increased over time; however, there were no changes in TB or PB. Study 2 included a randomized controlled trial comparing two control conditions to the …

Characterizing And Predicting Canadian Adolescents’ Internalizing Symptoms In The First Year Of The Covid-19 Pandemic, Haley Elizabeth Green

Electronic Thesis and Dissertation Repository

Most studies of adolescents’ internalizing symptoms during the COVID-19 pandemic have included few data waves, limiting long-term conclusions about adolescents’ mental health during the pandemic. Collecting only a few waves of data precludes examination of intraindividual symptom variability, which may have implications for adjustment beyond mean symptoms. We characterized mean n = 192 adolescents’ internalizing symptoms from March 2020-April 2021 and used mixed effect location scale models to examine established risk factors as predictors of mean trends and intraindividual variability in adolescents’ internalizing symptoms. Adolescents’ symptoms were relatively stable and low over the first year of the pandemic; severity peaked …

Interpersonal Problems And Suicidal Ideation In Daily Life: Examining The Moderating Role Of Social Problem-Solving, Brianna M. Meddaoui

Electronic Thesis and Dissertation Repository

Borderline personality disorder (BPD) is associated with significant impairment in interpersonal functioning and risk of suicidal ideation (SI). One mechanism underlying interpersonal problems in BPD is deficits in social problem-solving. Using ecological momentary assessment, this study investigated how acute interpersonal problems (conflict, social isolation, lack of support, and rejection) were associated with daily SI in adolescents presenting with BPD features. Perceived rejection (β = 0.05, SE = 0.02, p = .03), support (β = 0.09, SE = 0.02, p < .001), and conflict (β = 6.07, SE = 1.30, p < .001) were associated with SI concurrently. Those with weaker social problem-solving abilities were more likely to experience SI in response to perceived rejection (β = -0.3, SE = 0.01, p = .04). This study contributes …

Opening A Crack To Let The Light In: An Exploration Of An Online Group Adolescent Compassion Focussed Therapy Intervention, Euan Pb Fraser Tait

Electronic Thesis and Dissertation Repository

The current study’s goal is to expand the adolescent compassion focused therapy (CFT) literature by exploring participant experiences of a novel CFT protocol which was delivered in an online group therapy format. This study is a mixed methods approach using surveys, open-ended questionnaires, and interviews to explore participants’ experience and expression of feelings of inadequacy (FOI) and self-compassion. Thematic analysis findings revealed that participants struggled primarily with FOI relating to evaluative contexts such as school and sports and that these FOI also carried with them implications of self-worth and perfectionism. Through participating in the program, participants were able to de-shame …

Evaluating The Impact Of A Safe Exercise Training Workshop On Knowledge And Self-Efficacy To Manage Dysfunctional Exercise Among Eating Disorders Clinicians At Alsana Eating Disorders Center, Danika A. Quesnel

Electronic Thesis and Dissertation Repository

Engaging in dysfunctional exercise (DEX) is detrimental to eating disorders (EDs) prognosis, although common amongst clients. Though nutritionally supported exercise can improve ED treatment outcomes, without negatively impacting weight restoration, clinicians remain hesitant to address DEX, perhaps due to a lack of information and training. The current study examined the effects of a Safe Exercise at Every Stage (SEES) training on clinician knowledge and self-efficacy in managing DEX in ED treatment. Eating disorders clinicians completed measures before (n = 96) and after (n = 44) SEES training to assess their knowledge and self-efficacy around treating DEX, with 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 …

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 …

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 …

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 …

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. …

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 …

Understanding Service Gaps And Support Opportunities In The Treatment Of Childhood Anxiety, Chelsey R. Masson

Electronic Thesis and Dissertation Repository

Globally, anxiety disorders represent the most prevalent mental health disorders in children and youth (Polanczyk et al., 2015), with an increasing number of individuals perceiving the need for professional help (Georgiades et al., 2019). It is unclear, however, where families are seeking help from, what barriers families are facing, and what services are being provided for effective management of symptoms. Two methods were used to investigate possible treatment support models; a questionnaire identified patterns in parental help-seeking behaviours and outlined perceived barriers to professional help, while a scoping review examined key components of parent/caregiver treatment models. Findings showed that parents …

The Experiences Of Iraqi Refugees In Canada: A Life History Study Of War And Resilience In The Aftermath Of Migration, Nada Nessan

Electronic Thesis and Dissertation Repository

This thesis reports on a life history narrative on the experiences of Iraqi refugees who resettled in Canada after living through war. The aim of this study is to help change the narrow perspectives on the mental health of war affected populations to a broader perception shaped by cultural and social aspects and to inform the development of meaningful and cultural relevant programs and policies with a particular attention to the concept of resilience.

The first part of the study presents the chronological narratives, or profiles. of eight participants. The second part of the study is a thematic discussion of …

Homotopic Coupling In Persons With Epilepsy Using Movie-Driven And Resting-State Fmri, Caroline M. Chadwick

Electronic Thesis and Dissertation Repository

For the 30-40% of persons with epilepsy (PWE) with refractory epilepsy, seizure freedom following surgery is affected by the localization of the epileptogenic zone (EZ). However, functional abnormalities can exist at a distance from the EZ, which may contribute to variable outcomes after surgery. Considering epilepsy as a network disorder (Pittau & Vulliemoz, 2015), and evaluating functional coupling among homotopic brain areas, may help predict cognitive outcomes. Homotopic areas are well connected anatomically and undoubtedly work synchronously to generate cognition. We evaluated 22 persons with focal epilepsy and 24 neurologically healthy controls using fMRI at rest and while watching a …

The Relationship Between Perfectionism And Procrastination: Examining Trait And Cognitive Conceptualizations, And The Mediating Roles Of Fear Of Failure And Overgeneralization Of Failure, Lital Yosopov

Electronic Thesis and Dissertation Repository

The relationship between perfectionism and procrastination has been established in the literature; however, findings regarding the magnitude of this correlation are inconsistent. Some studies found small-to-medium effects between trait-perfectionism and trait-procrastination, while others found large effects between perfectionistic cognitions and procrastinatory cognitions, suggesting that the association may be stronger when assessed from a cognitive perspective. The present study addressed this inconsistency, by exploring this association using both trait and cognitive measures. There was a significant and positive correlation between perfectionism and procrastination, and the largest effect size was observed between perfectionism (trait and cognitive measures) and procrastinatory cognitions, suggesting that …

Assessment Instruments And Basic Personality Underpinnings Of Hypersexuality, Stephanie L. Montgomery-Graham

Electronic Thesis and Dissertation Repository

Despite rejection of the Hypersexual Disorder (HD) diagnosis from DSM-5, individuals continue to present clinically with feelings of out-of-control sexual behaviour, clinicians continue to treat “sexual addiction,” and researchers continue to study HD-type symptomology. To further investigation of the HD construct, Levaque and colleagues (2016) used common HD assessment measures and found that between 16.7% and 37.8% of young adult males met clinically significant scores for HD. Phase one of this dissertation replicated the surprising finding in a North American community sample and furthered the research by testing the assessment tool used in DSM-5 HD field trials, and the first …

An Information—Motivation—Behavioural Skills Model Of Sexual Consent, Erin J. Shumlich

Electronic Thesis and Dissertation Repository

This dissertation proposed an Information-Motivation-Behavioural Skills (IMB) model of affirmative sexual consent, which is consent that is ongoing, continuous, and clearly communicated. The overall objectives of the current dissertation research were to: 1) elicit — from young, sexually active individuals — information, motivation, and behavioural skills factors that are related to affirmative sexual consent behaviours; 2) develop and empirically test an Information–Motivation–Behavioural Skills (IMB) model of sexual consent and use this to examine the hypothesized relationships of affirmative consent-related information, motivation, and behavioural skills with affirmative consent behaviours; and 3) evaluate the psychometric properties of an IMB scale measuring …

The Relationship Between Schizotypal Traits And The Perceptual Processes Of Multisensory Integration, Temporal Processing, And Speech Perception, Anne-Marie Muller

Electronic Thesis and Dissertation Repository

Multisensory integration, the binding of sensory information from different sensory modalities, may contribute to perceptual symptomatology in schizophrenia, including hallucilllnations and aberrant speech perception. Differences in multisensory integration and temporal processing, an important component of multisensory integration, are consistently found in schizophrenia. Evidence is emerging that these differences extend across the schizophrenia spectrum, including individuals in the general population with higher schizotypal traits. In two studies, the relationship between schizotypal traits and perceptual functioning is investigated. We hypothesized associations between higher schizotypal traits and decreased multisensory integration, increased auditory speech distractibility, and less precise temporal processing. In Study 1, higher …

Direct And Indirect Non-Suicidal Self-Injury (Nssi) Expression: An Investigation Into The Nature Of Nssi And Childhood Maltreatment, Emma Truffyn

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Non-Suicidal Self-Injury (NSSI) involves deliberate damage to the body without suicidal intent. St. Germain and Hooley (2012) classify two forms of NSSI: direct and indirect. Direct NSSI is expressed through behaviours with immediate results (e.g. cutting), whereas indirect NSSI is expressed through means that are damaging to the body without immediate injury (e.g. promiscuity, substance abuse, risk behaviours, etc.). Research supports that NSSI behaviours occur in youth with histories of childhood maltreatment (CM; Trocmé et al., 2010); however, no study has examined if experiences of CM influence NSSI expression. Utilizing the InterRAI Child and Youth Mental Health tool (N …

Examining The Self-Schema Within A Cognitive Vulnerability-Stress Framework Of Mania, Nadia Maiolino

Electronic Thesis and Dissertation Repository

This dissertation aimed to inform a cognitive vulnerability-stress theory of mania, which addresses both the content and structure of the self-schema, along with the conditions under which these self-relevant cognitions are activated. Extant research on mania has primarily considered self-schema content, or an individual’s actual beliefs (e.g., “I am incompetent”). Although these investigations have successfully identified maladaptive self-beliefs associated with bipolar disorder, this research has been prone to inconsistencies and limited in distinguishing between mania and related forms of psychopathology (e.g., unipolar depression). Furthermore, very little research on mania has considered the organization of self-schema beliefs, referred to here as …

Child And Adolescent Sleep Disturbances And Psychopathology In A Mental Health Clinic Sample, Aviva Blacher

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Sleep disturbances in children and adolescents (hereafter children) are associated with significant short-term and long-term impairments including more severe psychopathology, reduced cognitive functioning, and poorer general health. We know that children being treated in specialty mental health services are more likely to have sleep disturbances than community samples. We also know that relationships exist between sleep and psychopathology in children with specific disorders (e.g. ADHD, depression, etc.). However, few studies have investigated the relationship between sleep and psychopathology in a broad sample of children seen at mental health agencies. Both child factors and family factors may influence both sleep and …

Exploring The Links Between Social Anxiety And Depression In The Maintenance Of Romantic Relationships, Christian M. Hahn

Electronic Thesis and Dissertation Repository

Social anxiety is characterized by fear and avoidance of social encounters and has recently been associated with a variety of difficulties in romantic relationships. Complicating further investigation of these associations is the high degree of comorbidity between social anxiety and depressive symptomatology, which share several similarities in expression despite disparate underlying causes. The present thesis examines the unique influences of social anxiety and depression on a number of central aspects of relationship functioning and provide the first longitudinal investigation of the impacts of actor and partner social anxiety and depression on relationship quality and functioning. In Study 1, three independent …