The handbook describes a method of teaching communication skills to students with severe disabilities (severely and profoundly retarded, trainable mentally retarded, autistic, deaf blind, and severely multihandicapped). In the interrupted behavior chain procedure, a routinized activity in a natural setting is interrupted and the child is taught to…

Ethnographic research (1) observes human behavior in its natural setting over a substantial period of time, (2) claims that classes of events are better understood through intensive examination of carefully selected particular cases, (3) incorporates as many of the complexities and variables into a setting as possible, and (4) is usually comprised…