Influence of motivating operations and discriminative stimuli on challenging behavior maintained by positive reinforcement

We examined the effects of an establishing operation (EO) and abolishing operation (AO) on stimulus control of challenging behavior. Two participants with developmental disabilities and challenging behavior participated. In Phase I, a functional analysis was conducted to identify the consequences maintaining challenging behavior. In Phase II, a discrimination between S(D) and S(Delta) was trained. In Phase III, pre-session MOs (i.e., EO and AO conditions) were arranged to assess their effects on challenging behavior. Finally in Phase IV, in addition to manipulating pre-session MOs the challenging behavior was evaluated under extinction in both S(D) and S(Delta) conditions. Results indicated that in the context of extinction when pre-session EO and AO conditions were manipulated, responding not only became differentiated but was higher in both S(D) and S(Delta) conditions in the pre-session EO condition when compared to the pre-session AO condition. Published by Elsevier Ltd.