Use of home videotapes to confirm parental reports of regression in autism.

The current study examined consistency between parental reports on early language development and behaviors in non-language domains and observer-coded videotapes of young children with and without autism spectrum disorder (ASD) and autistic regression. Data are reported on 56 children (84% male) with ASD (early onset or autistic regression) and 14 typically developing children (57% male) who had home videotapes. Unique to the current study is the independent identification of loss/no loss for each child by both parental report and observer-coded home videotapes and the examination of agreement between these two methods. Results indicate substantial concordance between parental report and observer codes for onset and loss of expressive language, but minimal concordance for loss in non-language domains, suggesting a need for supplementation of parental reports in these areas.

Birthday and non-birthday videotapes: the importance of context for the behavior of young children with autism.

The present study examines whether children display different frequencies of behaviors at birthday party as compared to non-birthday party settings, and elucidates in which setting behavior is more predictive of later child functioning. Behavior in birthday and non-birthday contexts was examined at 12 and 24 months of age for 56 children with autism spectrum disorder (ASD). The results of this study indicate that context does matter for young children's behavior and leads to a different picture of behavioral functioning. For children with ASD, behaviors from non-birthday videotapes are more predictive of functioning later in childhood. The findings suggest that close attention must be paid to contextual factors that may influence young children's behavior.