Past studies of autistic children's memory for linguistic materials have shown that autistics have a special linguistic coding difficulty. Because the autistic deficit stems from a failure to use semantic and syntactic knowledge or from a failure to acquire such forms, future research should explore the mechanics underlying this deficit. (PJM)

Comprehension and strategy use of 18 autistic children was compared with that of normal 3- and 4-year olds. Subjects were asked to act out certain syntactic and semantic patterns in two experiments. Autistic children performed below the levels of the normal subjects, suggesting that autism is a semantic/cognitive deficit. (PJM)