The factor structure of the Autism Behavior Checklist (ABC) was examined with 383 individuals (aged 5-22 years) with autism spectrum disorders. A five-factor model accounted for 80% of the total variance. However, no support was found for classifying the checklist's 57 items into the previously proposed five subscales. (Contains references.)…

Parents of 20 children with autism and 14 children with mental retardation, with comparable cognitive developmental levels, completed the Preschool Social Behavior Checklist. Results revealed that autistic children exhibited deficits in imaginative play, peer play, and imitation skills compared to the other group, and that parents are capable of…

Autism Behavior Checklists were completed for 52 autistic individuals (ages 2-31) and 62 nonautistic individuals, and data were analyzed using signal detection methodology. A single item (looks "through" people) combined with one of five other items discriminated as well as the sum scores, and further combinations did not improve…

The Autism Behavior Checklist was completed for 67 autistic and 56 mentally retarded and learning-disabled children (ages 6-15). The checklist was effective in classifying children when using either the full scale or only the more highly weighted items. Results did not support a single unidimensional scale or subdividing the checklist into five…