Reevaluation of two studies on relationships between nonhandicapped and severely mentally retarded children (ages 8-12) suggested that nonhandicapped children work harder, receive and emit fewer social reinforcers, have less opportunity to play and have fun, and achieve lower levels of social play when the playmate is physically handicapped as…

The Psychopathology Instrument for Mentally Retarded Adults was used to diagnose 163 mentally retarded institutionalized adults according to the Diagnostic and Statistical Manual-III axis 1 categories. Nine factors were extracted which contained 49.3 percent of the data variance and categorized correctly 69.3 percent of the cases. Factors included…

Four mentally retarded children (ages 4-11), 3 with autism, were successfully taught various adaptive behaviors for self-care skills. Training procedures involved the whole-task method and included modeling, verbal instructions, prompting, and edible and social reinforcement. (Author/JDD)