The results indicated that overcorrection plus positive reinforcement was effective in teaching one sign (milk); however, an added contingent exercise (having to stand up and sit down 10 times for an incorrect response) was required to teach the second sign (cookie). (Author/SW)

Empirical studies evaluating speech and language intervention procedures applied to children with autism are reviewed and the documented benefits are summarized. In particular, interventions incorporating sign language, discrete-trial training, and milieu teaching procedures have been used successfully to expand the communication repertoires of…