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Full-Text Articles in Psychology
Early Gaze Behaviours In Infants At High Familial Risk For Autism Spectrum Disorder: Association With Brain Development, Julia Teixeira Pinto Montenegro
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 …
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, …