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Full-Text Articles in Psychology
Exploring The Process Of Statistical Language Learning, Nicolette B. Noonan
Exploring The Process Of Statistical Language Learning, Nicolette B. Noonan
Electronic Thesis and Dissertation Repository
In this thesis, I investigated the process of statistical word segmentation using a combination of behavioural, clinical, and neuroimaging approaches. Prior research has largely focused on the outcome of statistical learning approaches, with little research attention paid to the process of learning. In this body of research, I sought to address this issue. In Chapter 2, I examined how domain-specific and domain-general working memory interference effects on a statistical word segmentation task. I found that when completing a concurrent visuospatial or verbal working memory task, statistical language learning was impaired. Thus, this study provided some evidence that domain-general working memory …
Girls’ Internalizing Symptoms And White Matter Tracts In Cortico-Limbic Circuitry, Ola Mohamed Ali
Girls’ Internalizing Symptoms And White Matter Tracts In Cortico-Limbic Circuitry, Ola Mohamed Ali
Electronic Thesis and Dissertation Repository
Dysfunction in cortico-limbic circuitry is implicated in internalizing disorders, but less is known about whether structural abnormalities precede disorder, thus potentially marking risk. I therefore examined associations between white matter tract integrity in cortico-limbic circuitry at age 7, obtained using Diffusion Tensor Imaging, and concurrent and longitudinal patterns of internalizing symptoms, over a 5-year period, in 42 typically developing girls. Using Automated Fiber Quantification, diffusion properties were examined at multiple points along tract length (cf., an average diffusion measure of the entire tract). Concurrent internalizing symptoms were associated with reduced fractional anisotropy in segments of the cingulum bundle and uncinate …
Relating Sensory Sensitivity And Repetitive Behaviours In Autism Spectrum Disorders, Samantha E. Schulz
Relating Sensory Sensitivity And Repetitive Behaviours In Autism Spectrum Disorders, Samantha E. Schulz
Electronic Thesis and Dissertation Repository
The heterogenous expression of Autism Spectrum Disorder (ASD) complicates our etiological understanding of the disorder. By focusing on the most commonly-reported symptom of ASD, namely sensory processing dysfunction, this project attempts to determine the underlying factors of autism-related restricted interests and repetitive behaviours (RRBs). The specific aims of this project are to examine the relationship between sensory sensitivity and RRBs and to compare current questionnaire measures of sensory processing issues to more objective measures, specifically, a psychophysical behavioural task of visual sensitivity. A positive relationship was found between sensitivity and RRBs in both autistic children and their TD peers. Furthermore, …