Ten author-contributed papers present information on stimulus control research and developmental disabilities. Articles address such isues as the role of naming, development of stimulus classes, control by exclusion, and comparison of trial-and-error and graduated stimulus change procedures. (CL)

Three autistic boys (ages 9-13) were trained to select a card containing a stimulus array comprised of three visual cues. Decreased distance between cues resulted in responses to more cues, increased distance to fewer cues. Distances did not affect the responding of children matched for mental and chronological age. (Author/JW)

Two experiments were performed with five severely developmentally disabled individuals (13-26 years old) to test the relationship between toys as conditioned reinforcers and stereotypy. Findings suggested that conditioning reinforcers for play, such as toys, may result in a durable and possibly more cost effective procedure of dealing with…