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. 2010 Aug;40(8):946-57.
doi: 10.1007/s10803-010-0941-y.

Play and developmental outcomes in infant siblings of children with autism

Lisa Christensen  1 , Ted Hutman, Agata Rozga, Gregory S Young, Sally Ozonoff, Sally J Rogers, Bruce Baker, Marian Sigman
Affiliations

Play and developmental outcomes in infant siblings of children with autism

Lisa Christensen et al. J Autism Dev Disord. 2010 Aug.

Abstract

We observed infant siblings of children with autism later diagnosed with ASD (ASD siblings; n = 17), infant siblings of children with autism with and without other delays (Other Delays and No Delays siblings; n = 12 and n = 19, respectively) and typically developing controls (TD controls; n = 19) during a free-play task at 18 months of age. Functional, symbolic, and repeated play actions were coded. ASD siblings showed fewer functional and more non-functional repeated play behaviors than TD controls. Other Delays and No Delays siblings showed more non-functional repeated play than TD controls. Group differences disappeared with the inclusion of verbal mental age. Play as an early indicator of autism and its relationship to the broader autism phenotype is discussed.

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