The response rate of an educably mentally retarded young adult on a folder assembly task and for two types of self-stimulatory behavior was measured under fixed ratio, variable ratio, and fixed ratio pacing schedules of reinforcement. Higher work rates were maintained by the variable ratio and fixed ratio pacing schedule. (Author/CL)

Six mentally retarded students (12-22 years old) were taught to name sight words during token-exchange periods of a token-reinforcement system. Sequential teaching of new sets of sight words via a multiple-baseline design evaluated the procedure. Five of the 6 students acquired sight-word vocabularies. Data support the educational use of…

The Adaptive Behavior Scale was used to evaluate a three-level token economy designed to modify the behavior of 42 behaviorally disturbed young adults of borderline intelligence. Following treatment large improvements occurred in those areas that were logically related to target behaviors within the token economy. Gains were maintained at…