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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 …

Early Protein Intake Predicts Functional Connectivity And Neurocognition In Preterm Born Children, Emma G. Duerden, Benjamin Thompson, Tanya Poppe, Jane Alsweiler, Greg Gamble, Yannan Jiang, Myra Leung, Anna C. Tottman, Trecia Wouldes, Steven P. Miller, Jane E. Harding, Jane M. Alsweiler, Janene B. Biggs, Coila Bevan, Joanna M. Black, Frank H. Bloomfield, Kelly Fredell, Greg D. Gamble, Jane E. Harding, Sabine Huth, Yannan Jiang, Christine Kevan, Myra Leung, Geraint Phillips, Tanya Poppe, Jennifer A. Rogers, Heather Stewart, Benjamin S. Thompson

Brain and Mind Institute Researchers' Publications

© 2021, The Author(s). Nutritional intake can promote early neonatal brain development in very preterm born neonates (< 32 weeks’ gestation). In a group of 7-year-old very preterm born children followed since birth, we examined whether early nutrient intake in the first weeks of life would be associated with long-term brain function and neurocognitive skills at school age. Children underwent resting-state functional MRI (fMRI), intelligence testing (Wechsler Intelligence Scale for Children, 5th Ed) and visual-motor processing (Beery-Buktenica, 5th Ed) at 7 years. Relationships were assessed between neonatal macronutrient intakes, functional connectivity strength between thalamic and default mode networks (DMN), and neuro-cognitive function using multivariable regression. Greater functional connectivity strength between thalamic networks and DMN was associated with greater intake of protein in the first week (β = 0.17; 95% CI 0.11, 0.23, p < 0.001) but lower intakes of fat (β = − 0.06; 95% CI − 0.09, − 0.02, p = 0.001) and carbohydrates (β = − 0.03; 95% CI − 0.04, − 0.01, p = 0.003). Connectivity strength was also associated with protein intake during the first month (β = 0.22; 95% CI 0.06, 0.37, p = 0.006). Importantly, greater thalamic-DMN connectivity strength was associated with higher processing speed indices (β = 26.9; 95% CI 4.21, 49.49, p = 0.02) and visual processing scores (β = 9.03; 95% CI 2.27, 15.79, p = 0.009). Optimizing early protein intake may contribute to promoting long-term brain health in preterm-born children.

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 …

Musical Instrument Familiarity Affects Statistical Learning Of Tone Sequences., Stephen C Van Hedger, Ingrid Johnsrude, Laura J Batterink

Brain and Mind Institute Researchers' Publications

Most listeners have an implicit understanding of the rules that govern how music unfolds over time. This knowledge is acquired in part through statistical learning, a robust learning mechanism that allows individuals to extract regularities from the environment. However, it is presently unclear how this prior musical knowledge might facilitate or interfere with the learning of novel tone sequences that do not conform to familiar musical rules. In the present experiment, participants listened to novel, statistically structured tone sequences composed of pitch intervals not typically found in Western music. Between participants, the tone sequences either had the timbre of artificial, …

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 …

Family Functioning As A Moderator In The Relation Between Perceived Stress And Psychotic-Like Experiences Among Adolescents During Covid-19, Zhipeng Wu, Zhulin Zou, Feiwen Wang, Zhibiao Xiang, Mengran Zhu, Yicheng Long, Haojuan Tao, Lena Palaniyappan, Zhening Liu

Brain and Mind Institute Researchers' Publications

Background: The COVID-19 pandemic has increased psychological stress among adolescents, and the relation between perceived stress (PS) and psychotic-like experiences (PLEs) has been well-established. However, little is known about the role of family functioning (FF) in this relation, especially when adolescents experienced the extended lockdown period with family members. Methods: A total of 4807 adolescents completed this retrospective paper-and-pencil survey after school reopening between May 14th and June 6th, 2020 in Hunan Province, China. We measured PS with the Perceived stress scale (PSS-10), PLEs with the eight positive items from Community Assessment of Psychic Experiences (CAPE-8), and FF with the …

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, …

Regional Brain And Spinal Cord Volume Loss In Spinocerebellar Ataxia Type 3, Jennifer Faber, Tamara Schaprian, Koyak Berkan, Kathrin Reetz, Marcondes Cavalcante França, Thiago Junqueira Ribeiro De Rezende, Jiang Hong, Weihua Liao, Bart Van De Warrenburg, Judith Van Gaalen, Alexandra Durr, Fanny Mochel, Paola Giunti, Hector Garcia-Moreno, Ludger Schoels, Holger Hengel, Matthis Synofzik, Benjamin Bender, Gulin Oz, James Joers, Jereon J. De Vries, Jun Suk Kang, Dagmar Timmann-Braun, Heike Jacobi, Jon Infante, Richard Joules, Sandro Romanzetti, Jorn Diedrichsen, Matthias Schmid, Robin Wolz, Thomas Klockgether

Brain and Mind Institute Researchers' Publications

Background: Given that new therapeutic options for spinocerebellar ataxias are on the horizon, there is a need for markers that reflect disease-related alterations, in particular, in the preataxic stage, in which clinical scales are lacking sensitivity. Objective: The objective of this study was to quantify regional brain volumes and upper cervical spinal cord areas in spinocerebellar ataxia type 3 in vivo across the entire time course of the disease. Methods: We applied a brain segmentation approach that included a lobular subsegmentation of the cerebellum to magnetic resonance images of 210 ataxic and 48 preataxic spinocerebellar ataxia type 3 mutation carriers …

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 …

Functional Organization Of Frontoparietal Cortex In The Marmoset Investigated With Awake Resting-State Fmri, Yuki Hori, Justine C. Cléry, David J. Schaeffer, Ravi S. Menon, Stefan Everling

Brain and Mind Institute Researchers' Publications

Frontoparietal networks contribute to complex cognitive functions in humans and macaques, such as working memory, attention, task-switching, response suppression, grasping, reaching, and eye movement control. However, there has been no comprehensive examination of the functional organization of frontoparietal networks using functional magnetic resonance imaging in the New World common marmoset monkey (Callithrix jacchus), which is now widely recognized as a powerful nonhuman primate experimental animal. In this study, we employed hierarchical clustering of interareal blood oxygen level-dependent signals to investigate the hypothesis that the organization of the frontoparietal cortex in the marmoset follows the organizational principles of the macaque frontoparietal …

How Long Do Mood Induction Procedure (Mip) Primes Really Last? Implications For Cognitive Vulnerability Research., Jennifer C P Gillies, David J A Dozois

Psychology Publications

BACKGROUND: Mood Induction Procedures (MIPs) are used widely in research on cognitive vulnerability to depression. Although empirical evidence supports certain MIPs as effective, little research has evaluated whether MIP-induced sad moods are sufficiently persistent. This study aimed to determine (1) how long an MIP-induced mood lasts according to commonly used operational definitions and (2) whether these findings vary according to the type of MIP used.

METHODS: Four-hundred-and-one undergraduate students were randomly assigned to one of three commonly used sad MIPs (music, memory, music+memory) or to one of three matched neutral MIPs. Mood was repeatedly measured immediately prior to and following …

Sustained Neural Activity Correlates With Rapid Perceptual Learning Of Auditory Patterns, Björn Herrmann, Kurdo Araz, Ingrid S. Johnsrude

Brain and Mind Institute Researchers' Publications

Repeating structures forming regular patterns are common in sounds. Learning such patterns may enable accurate perceptual organization. In five experiments, we investigated the behavioral and neural signatures of rapid perceptual learning of regular sound patterns. We show that recurring (compared to novel) patterns are detected more quickly and increase sensitivity to pattern deviations and to the temporal order of pattern onset relative to a visual stimulus. Sustained neural activity reflected perceptual learning in two ways. Firstly, sustained activity increased earlier for recurring than novel patterns when participants attended to sounds, but not when they ignored them; this earlier increase mirrored …

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 …

Speech And Song Classification Themes Across Childhood And Adulthood, Sarah Sequeira

Undergraduate Student Research Internships Conference

Using data collected through a previously administered music and language survey, we conducted a mixed model analysis of open-ended survey responses to questions regarding differences between music and language, and (more specifically) differences between the sound features of speech and song. We found that adult participants tended to provide responses related to the higher-level themes of function and realization, whilst children uniquely gave concrete answers. This exploratory study will guide future research in the field of speech and song classification, as well as music and language more generally.

Optimal Denoising For Naturalistic Fmri Data, Brandon J. Yip

Undergraduate Student Research Internships Conference

In order to surgically treat epilepsy, it is necessary to localize the epileptic lesion. Naturalistic functional magnetic resonance imaging (fMRI) can potentially be an accurate, non-invasive, and efficient tool for identifying diseased neural networks that cause epilepsy. We investigated inter-subject correlation (ISC) as a measure of neural synchronization between healthy controls (n = 24) and patients with epilepsy (n = 18) while subjects watched a stimulating movie clip. To investigate optimal denoising strategies, we analyzed ISC values with five sets of motion regressors, functions that remove unwanted motion-induced interference in fMRI signal. All ISC values were denoised using ICA-AROMA, an …

Exploring Sensory Phenotypes In Autistic Children And Children With Adhd, Anahid Pourtousi

Undergraduate Student Research Internships Conference

Autistic children and children with attention-deficit/hyperactivity disorder (ADHD) often experience sensory processing difficulties, which are highly heterogeneous. Researchers have identified sensory phenotypes that co-occur within autistic individuals. However, sensory phenotypes have not been examined in children with ADHD. The aim of this research is to identify whether these sensory phenotypes exist in children with ADHD, and whether these phenotypes are similar to those observed in autism. A secondary aim of this study is to determine whether these sensory phenotypes are related to autism, ADHD, and obsessive-compulsive (OCD) traits. Short Sensory Profile data from 495 autistic children and 461 children with …

Gender-Based Violence Survey, Alyssa J. Madhani

Undergraduate Student Research Internships Conference

My research output shows the theoretical and practical skills gained from this internship. It also showcases some of the key learning from the survey- recognizing critical expertise in gender-based violence work.

Intergenerational Transmission Of Functional Connectivity Profiles In Isolated Reading And Math Networks: A Scoping Review And Study Proposal, Ashini Peiris, Ira Gupta, Lien Peters, Eric D. Wilkey

Undergraduate Student Research Internships Conference

The scoping review surveyed the existing literature on the topic of resting-state functional connectivity (rsFC) and mathematical cognition. The review revealed that rsFC is indicative of distinct long-term developmental trends in mathematical processing, alluding to individual differences in math abilities. Though there have been multiple studies that investigate individual differences in functional connectivity patterns related to math development and math learning disorders, no study has directly investigated to what degree these neurobiological factors are heritable. To address this topic, the following intergenerational transmission (IT) study is proposed. IT is the transfer of personal values, abilities, behaviours, and traits, from parents …

The Parallel Pandemic: A Systematic Review On The Effects Of The Covid-19 Pandemic On Eating Disorders And Ocd In Children And Adolescents, Nasong A. Luginaah

Undergraduate Student Research Internships Conference

In January 2021, Covid-19 had already been diagnosed in over 100 million individuals¹. Due to the high degree of infectivity, many countries all over the globe attempted to counter the virus by instituting nation-wide lockdowns. The effects of the lockdowns resulting from the Covid-19 Pandemic on the mental health of children and adolescents have drawn a lot of public health attention with many calling for an increased in the understanding of the potential effects the youth of today may have to endure. Two specific mental health illnesses have seemingly worsened are OCD and eating disorders.

Peer Mentorship And Support Patterns Among Paramedics, Ting Hsueh

Undergraduate Student Research Internships Conference

My USRI project involved partnering with staff at a regional organization and a Western researcher to conduct a study with aims involving: 1.Examine how staff at MLPS share information and support others in their network. 2.Identify key areas where organizations may want to intervene to foster an optimal peer network.