Identifier

35

Date

2014

Document Type

Honors Thesis

Degree Name

Bachelor of Arts

Major

Psychology

Concentration

General Psychology

Committee Member

Helen Sable

Abstract

Studies have shown that a right ear advantage (REA) in dichotic listening in developmentally normal children does exist. Unlike Broadbent and Gregory (1964), who tested only men for the presence of an REA, recent variations of their study examining the REA have included diverse samples, including females and those who have developmental disorders. Autism Spectrum Disorder (ASD) is among the groups examined. Gender, developmental conditions, and emotions have all been shown to impact brain lateralization. Lateralization of brain function is related to ear advantage for processing auditory information with an REA being observed for speech stimuli. Differences in the REA have been shown to exist in ASD using methods such as, magnetic resonance imaging (MRI), recognition tasks, and recall tasks. For example, Kleinhans, Cohen and Courchesne (2008) used recognition of two syllable meaningful words presented dichotically and showed autistic children had a significantly lower REA than developmentally normal children. The study indicated children with ASD function abnormally in the process of hemispheric lateralization of language. Thus, it appears ASD greatly impacts lateralization of speech sounds.

Comments

Undergraduate Honor's Thesis

Library Comment

Honors thesis originally submitted to the Local University of Memphis Honor’s Thesis Repository.

Notes

Data is provided by the student.

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