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Autism
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Imitation in fragile X syndrome

Implications for autism

Marta Macedoni-Luksic

University Medical Center, Ljubljana, Slovenia, marta.macedoni-luksic{at}mf.uni-lj.si

Laura Greiss-Hess

Institute,UC Davis,USA

Sally J. Rogers

Institute,UC Davis,USA

David Gosar

University Medical Center,Ljubljana,Slovenia

Kerrie Lemons-Chitwood

Institute, UC Davis, USA

Randi Hagerman

Institute, UC Davis, USA

To address the specific impairment of imitation in autism, the imitation abilities of 22 children with fragile X syndrome (FXS) with and without autism were compared. Based on previous research, we predicted that children with FXS and autism would have significantly more difficulty with non-meaningful imitation tasks. After controlling for full-scale IQ and age, the groups did not differ in their overall imitation accuracy scores, but analysis of error patterns revealed that children with FXS and autism made more groping errors and additional movements than the comparison group. These error patterns are consistent with the hypothesis that an action production system deficit plays an important role in the overall imitation deficit in autism, at least in children with FXS.

Key Words: autism • fragile X syndrome • imitation

This version was published on November 1, 2009

Autism, Vol. 13, No. 6, 599-611 (2009)
DOI: 10.1177/1362361309337850
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