Identification and drawing of early concepts in children with autism spectrum disorder and children without disability.

This comparative study is a replication and extension of previous work related to children's drawings of early concepts. In all, 15 children with autism spectrum disorder (ASD) and 19 children without disability took part in the study, and were video recorded as they drew 10 early emerging concepts such as "eat" and "more." In a second task, the participants were asked to label Picture Communication Symbols conventionally used in augmentative and alternative communication (AAC) systems.