Discusses the use of augmentative and alternative communication (AAC) to enhance comprehension and expression of people with autism. A theoretical model for AAC assessment and intervention is presented and illustrated with a case study of a 6-year-old boy with autism and severe expressive and receptive language impairments. (Author/DB)

This article considers the models and beliefs of language clinicians, as reflected by their choice of specific assessment instruments or measurement methods. Differences in construct and philosophy are demonstrated in a review of personality and vocational preference inventories and several subtests of sentence production. (DB)