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Intact automatic imitation of human and robot actions in autism spectrum disorders

Bird, G., Leighton, J., Press, C. and Heyes, C. (2007) Intact automatic imitation of human and robot actions in autism spectrum disorders. Proceedings of the Royal Society: B - Biological Sciences, 274 (1628). pp. 3027-3031. ISSN 1471-2954

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To link to this item DOI: 10.1098/rspb.2007.1019

Abstract/Summary

The existence of a specialized imitation module in humans is hotly debated. Studies suggesting a specific imitation impairment in individuals with autism spectrum disorders (ASD) support a modular view. However, the voluntary imitation tasks used in these studies (which require socio-cognitive abilities in addition to imitation for successful performance) cannot support claims of a specific impairment. Accordingly, an automatic imitation paradigm (a ‘cleaner’ measure of imitative ability) was used to assess the imitative ability of 16 adults with ASD and 16 non-autistic matched control participants. Participants performed a prespecified hand action in response to observed hand actions performed either by a human or a robotic hand. On compatible trials the stimulus and response actions matched, while on incompatible trials the two actions did not match. Replicating previous findings, the Control group showed an automatic imitation effect: responses on compatible trials were faster than those on incompatible trials. This effect was greater when responses were made to human than to robotic actions (‘animacy bias’). The ASD group also showed an automatic imitation effect and a larger animacy bias than the Control group. We discuss these findings with reference to the literature on imitation in ASD and theories of imitation.

Item Type:Article
Refereed:Yes
Divisions:Life Sciences > School of Psychology and Clinical Language Sciences > Department of Psychology
Life Sciences > School of Psychology and Clinical Language Sciences > Neuroscience
Life Sciences > School of Psychology and Clinical Language Sciences > Social
Life Sciences > School of Psychology and Clinical Language Sciences > Perception and Action
ID Code:22052
Additional Information:The full text of this article is freely available via PMC using the link supplied in Related URLs
Publisher:The Royal Society

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