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Tonnsen, Bridgette L.; Shinkareva, Svetlana V.; Deal, Sara C.; Hatton, Deborah D.; Roberts, Jane E. – American Journal on Intellectual and Developmental Disabilities, 2013
Anxiety is among the most impairing conditions associated with Fragile X syndrome (FXS) and is putatively linked to atypical physiological arousal. However, few studies have examined this association in young children with FXS. The authors examined whether patterns of arousal and behavior during an experimental stranger approach paradigm differ…
Descriptors: Anxiety, Genetic Disorders, Physiology, Arousal Patterns
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Hoch, John; Symons, Frank; Sng, Sylvia – American Journal on Intellectual and Developmental Disabilities, 2013
There have been limited direct tests of the hypothesis that self-injurious behavior (SIB) regulates arousal. In this study, two autonomic biomarkers for physiological arousal (heart rate [HR] and the high-frequency [HF] component of heart rate variability [HRV]) were investigated in relation to SIB for 3 participants with intellectual…
Descriptors: Injuries, Self Destructive Behavior, Metabolism, Mental Retardation
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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