Four young children with severe and moderate handicaps were taught to generalize play responses. Across the four participants, training to generalize within-toy sets resulted in complete between-class generalization in 11 sets, partial generalization in 3 sets, and no generalization in 2 sets. (Author/CL)

Two children (ages four and five) with mild developmental delays and no appropriate toy play were trained individually on one topography for each toy. Previously reinforced topographies of toy play were then placed on extinction, resulting in the induction of untrained topographies. (Author/DB)

Three experiments, involving five students (aged 13-20) with profound, multiple handicaps, showed that the students could effectively use microswitches to demonstrate toy preferences, to indicate preferences for social attention, and to make specific requests of educational staff in school and community settings. (Author/JDD)