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Klusek, Jessica; Martin, Gary E.; Losh, Molly – American Journal on Intellectual and Developmental Disabilities, 2013
This study tested the hypothesis that pragmatic (i.e., social) language impairment is linked to arousal dysregulation in autism spectrum disorder (ASD) and fragile X syndrome (FXS). Forty boys with ASD, 39 with FXS, and 27 with typical development (TD), aged 4-15 years, participated. Boys with FXS were hyperaroused compared to boys with TD but did…
Descriptors: Physiology, Genetic Disorders, Pervasive Developmental Disorders, Autism
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Roberts, Jane E.; Tonnsen, Bridgette; Robinson, Ashley; Shinkareva, Svetlana V. – American Journal on Intellectual and Developmental Disabilities, 2012
The present study contrasted physiological arousal in infants and toddlers with fragile X syndrome to typically developing control participants and examined physiological predictors early in development to autism severity later in development in fragile X syndrome. Thirty-one males with fragile X syndrome (ages 8-40 months) and 25 age-matched…
Descriptors: Intervals, Mental Retardation, Autism, Toddlers
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Rogers, Sally J.; Ozonoff, Sally – Journal of Child Psychology and Psychiatry, 2005
Background: Unusual responses to sensory stimuli are seen in many children with autism. Their presence was highlighted both in early accounts of autism and in more recent first-person descriptions. There is a widespread belief that sensory symptoms characterize autism and differentiate it from other disorders. This paper examines the empirical…
Descriptors: Stimuli, Investigations, Autism, Search Engines
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Stevens, Sheila; Gruzelier, John – Journal of Autism and Developmental Disorders, 1984
Electrodermal activity to auditory stimuli was compared in 20 autistic children and their matched retarded and normal controls (N=80). The autistic children were virtually indistinguishable in individual features of electrodermal activity from controls when both chronological and mental age comparisons were accounted for. (Author/CL)
Descriptors: Arousal Patterns, Auditory Stimuli, Autism, Mental Retardation
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van Engeland, Herman – Journal of Autism and Developmental Disorders, 1984
Mean number of spontaneous fluctuations in skin conductance did not differentiate the groups. The 35 autistic children, compared with controls, were significantly more often nonresponsive to the first trial. When responding, autistic children showed electrodermal orienting responses characterized by large amplitudes and fast recovery. (Author/CL)
Descriptors: Arousal Patterns, Autism, Emotional Disturbances, Mental Retardation