Application of a terminal schedule probe method to inform schedule thinning with multiple schedules.

Multiple schedules are effective at decreasing challenging behavior and maintaining alternative behavior at acceptable levels. Currently, no conclusive guidance is available for empirically deriving multiple-schedule components (continuous reinforcement for alternative behavior and extinction for challenging behavior [discriminative stimulus] and extinction for both alternative and challenging behavior [delta stimulus]) during the schedule-thinning process. In the current investigation, we describe a terminal schedule probe method to determine delta stimulus starting points and strategies for subsequent schedule-thinning progressions to reach caregiver-informed terminal schedules. We review schedule-thinning outcomes for a clinical cohort using a consecutive controlled case series approach and report results for two groups: One group included applications of terminal probe thinning (n = 24), and the other involved traditional dense-to-lean thinning (n = 18). Outcomes suggest that the terminal schedule probe method produced effective treatments with less resurgence of challenging behavior and leaner, more feasible, multiple schedules.