The study investigated the effects of two levels of teacher intrusion upon the behavior of eight elementary level autistic children and their nonhandicapped peers during dyadic play interactions. Few differences in subject behavior were observed, though the low-intrusion condition was associated with higher levels of toy contact and fewer…

Fourteen mother-child dyads involving preschool children with autism and 14 matched dyads of typically developing children and mothers were observed during free play. Mothers of autistic children directed verbalizations to something within the child's focus of attention as often as other mothers. They directed verbalizations to something not…

Siblings, mothers, and fathers in nine families of a child with autism were observed in dyadic play interactions with the autistic child. Parents exhibited more play behaviors toward children than siblings, but the autistic children initiated more interactions toward siblings than toward parents. Vineland Adaptive Behavior scale scores correlated…

Longitudinal videotape recordings of six young children with autism and six age- and language-matched children with Down syndrome in structured play with their mothers were analyzed. Findings of reduced expression of positive affect by autistic subjects suggest that their known deficits in attention and affective responsiveness persisted even in…