The Use of Contingency-Based Procedures to Promote Tolerance of Schedule Thinning for Hypothesized Multiply Maintained Problem Behavior.

Contingency-based procedures have been found to be effective in facilitating delays to reinforcement for escape-maintained behavior within research and clinical contexts. Few studies have evaluated the use of these procedures for multiply maintained problem behavior. A contingency-based procedure was conducted with two participants to evaluate the effectiveness this procedure had on increasing tolerance to schedule thinning for problem behavior that was hypothesized to be multiply controlled.

Assessment and treatment of automatically reinforced self-induced emesis.

Frequent emesis can cause substantial deleterious effects to a child's health and environment. We conducted a functional analysis of a 3-year-old girl's self-induced emesis and confirmed that emesis was maintained by automatic reinforcement. In a reversal design, we evaluated the efficacy of implementing response blocking at 100% and 50% treatment integrity levels on both attempts and successful production of emesis.