Language disabilities in infantile autism

Experimental studies of autistic children's memory for linguistic materials have yielded what appear to be conflicting results. A review of these studies reveals a pattern of findings consistent with the hypothesis that autistics do, in fact, have a special linguistic coding difficulty. The apparent discrepancies are the result of the use of low-power statistical tests in some experiments. Because the autistic deficit may arise from a failure to use semantic or syntactic knowledge or even from a failure to acquire such knowledge in the first place, future research should be aimed at explicating the precise mechanisms underlying the autistic deficit.