This study examined effect of initial differential reinforcement of other behavior (DRO) intervals on disruptive behavior of nine students with moderate disabilities. Results indicate initial DRO value equal to the mean number of intervals between responses in baseline was much more effective than a value twice that size. (Author/PB)

Method of treatment of self-injurious behaviors for three severely retarded students (ages six-seven) was selected by matching one of three hypotheses (self-stimulation, positive reinforcement, negative reinforcement) to a judgment concerning cause. Results supported the argument that treatment programs should be based on a functional analysis of…