A variable interval schedule of reinforcement was used with five behavior disordered boys (7-13 years old) to improve attending and study behavior of the children during the communicative skills period. (SBH)

A differential schedule of time-out was effective in reducing target maladaptive behaviors in three mentally retarded students (ages 5-9). In addition, by permitting one behavior to occur within an interval which occasioned only a warning, students were allowed to develop self-control within a structured setting. (Author)

The rate of achievement and enjoyment of 12 learning disabled pupils (ages 8-12 years) in a token economy was demonstrated to be higher when they were permitted to select their own reinforcers than when the teacher selected the reinforcers. (MH)