Positive reinforcement (food) presented both regularly and variably was effectively used to reduce self-stimulatory behavior in a 12-year-old profoundly retarded visually impaired male over a 2-month period. The improved behavior was maintained after the summer break and into the new school year. (DB)

Covert self-injurious behavior in a 21-year old with mild mental retardation and cerebral palsy was treated by first identifying tangible and social reinforcers and then providing reinforcers contingent on absence of tissue damage identified during physical examination. Almost complete success was achieved and maintained over 10 months. (DB)

The study evaluated a positive behavior therapy approach to managing disruptive screaming and crying in a classroom setting by a ten-year-old female with severe retardation, visual impairment, and physical disabilities. Auditory stimulation decreased disruptive behavior to zero levels, and gains were maintained at five-month followup. (Author/DB)

A 13-year-old deaf-blind boy who exhibited disruptive problem behaviors during mobility training sessions was successfully treated in a program that incorporated contingent reinforcement for reduced rates of responding. A 1-year follow-up assessment revealed continued behavioral improvement. (Author/JDD)