Social and Behavioral Sciences Commons^™

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 …

Examining The Relationships Between Socio-Cognitive Factors And Neural Synchrony During Movie Watching Across Development, Kathleen M. Lyons

Electronic Thesis and Dissertation Repository

While different cognitive abilities mature, the conscious experiences of children likely become richer and more elaborate. A challenge in investigating relationships between cognitive development and real-world experiences is having measures that assess naturalistic processing. Movie watching offers a solution, since following the plot of a film requires cognitive processes that are similar to real-world experiences. When different adults watch the same film, their brain activity begins to align (known as neural synchrony). The strength of this alignment has been shown to reflect the degree to which different individuals are having a similar experience of the movie. While this phenomenon has …

Developmental Differences In The Learning And Consolidation Of Linguistic Regularities, Sarah Berger

Electronic Thesis and Dissertation Repository

Relative to adults, children have a well-known advantage for learning linguistic regularities, which could be partially driven by their deeper sleep. To examine the relationship between consolidation and language learning across development, children and adults learned a novel article system with an implicit grammatical rule. Participants performed a judgment task on phrases containing the novel articles before and after a night of EEG-monitored sleep. We found that rule sensitivity emerged rapidly in children, whereas it did not emerge until the second session in adults. Children demonstrated better generalization of the rule than adults. Consolidation effects showed a developmental double dissociation, …

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 …

Co-Rumination In Social Networks, Samantha M. Jones

Electronic Thesis and Dissertation Repository

Although co-rumination is associated with positive relationship perceptions, individuals that engage in this behaviour often report fewer friends and peer difficulties. Those with a tendency to co-ruminate also report elevated levels of internalizing symptoms. Thus, the tendency to co-ruminate may put individuals at risk of depressive and anxious symptoms as well as social problems as they make the challenging transition to university and build new social networks. I analyzed social network data from 458 first year undergraduate students during their first university semester. Co-rumination within a particular relationship was associated with greater tie strength and socio-emotional multiplexity. Co-rumination was positively …

Early Gaze Behaviours In Infants At High Familial Risk For Autism Spectrum Disorder: Association With Brain Development, Julia Teixeira Pinto Montenegro

Electronic Thesis and Dissertation Repository

Children diagnosed with Autism Spectrum Disorder (ASD) show impairments in gaze-following and will seldom engage in joint attention (JA). The ability to initiate JA (IJA) can be more impaired than the ability to respond to JA (RJA). In a longitudinal study, 101 high-risk infants for ASD (62% males) completed MRI scans at 4 or 6 months of age. Subcortical volumes (thalamus, basal ganglia, hippocampus, amygdala) were extracted. Gaze and JA behaviours were assessed with standardized measures. The majority of infants were IJA non-responders (n=93, 92%), and over half were RJA non-responders (n=50, 52%). In the non-responder groups, models testing the …

Screen Time Use And Children’S Mental Health During The Covid-19 Pandemic, Amira Hmidan

Electronic Thesis and Dissertation Repository

Parents with school-aged children have experienced numerous hardships during the 2020-2021 academic school year, including school closures, lockdowns, and travel restrictions. Higher levels of parent stress and screen time may adversely impact children’s behavioural outcomes. This longitudinal survey study examined the associations of parent stress, parenting styles, and prolonged screentime on internalizing and externalizing behaviours in school-aged children. Parents (n = 108) completed survey measures at two time points over the 2020-2021 academic school year. Two generalized estimating equations were performed. There was a significant positive interaction between parent stress and screen time (B = < .001; p = .001) …