Handedness as a marker of cerebral lateralization in children with and without autism
Forrester, Gillian and Pegler, R. and Thomas, Michael S.C. and Mareschal, Denis (2014) Handedness as a marker of cerebral lateralization in children with and without autism. Behavioural Brain Research 268 , pp. 14-21. ISSN 0166-4328.
We employed a multiple case studies approach to investigate lateralization of hand actions in typically and atypically developing children between 4 and 5 years of age. We report on a detailed set of over 1200 hand actions made by four typically developing boys and four boys with autism. Participants were assessed for unimanual hand actions to both objects and the self (self-directed behaviors). Individual and group analyses suggest that typically developing children have a right hand dominance for hand actions to objects and a left hand dominance for hand actions for self-directed behaviors, revealing a possible dissociation for functional specialization of the left and right hemispheres respectively. Children with autism demonstrated mixed-handedness for both target conditions, consistent with the hypothesis that there is reduced cerebral specialization in these children. The findings are consistent with the view that observed lateralized motor action can serve as an indirect behavioral marker for evidence of cerebral lateralization.
|Keyword(s) / Subject(s):||Cerebral lateralization, Handedness, Autism, Self-directed behavior|
|School:||Birkbeck Schools and Departments > School of Science > Psychological Sciences|
|Research Centre:||Educational Neuroscience, Centre for, Birkbeck Knowledge Lab, Brain and Cognitive Development, Centre for (CBCD)|
|Date Deposited:||08 Apr 2014 09:35|
|Last Modified:||09 Dec 2016 11:15|
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