The effects of fixed-time and contingent schedules of negative reinforcement on compliance and aberrant behavior

Noncontingent Reinforcement to Improve Classroom Behavior of a Student With Developmental Disability

The purpose of this study was to examine the effects of a noncontingent reinforcement intervention package implemented by an interning teacher in a special education classroom to address disruptive behavior and task engagement for a third-grade, 8-year-old boy with developmental disability. Using a within-subject reversal design (A-B-A-B), a teacher interning in Max’s classroom delivered 3-min breaks (i.e., escape) from classroom tasks on a fixed-time 2-min interval schedule for five daily sessions during the first intervention phase and for five daily sessions during the reimplementation phase; breaks were not contingent on his behavior. The intervention package also included a reinforcement menu for the student to select daily from escape activities (i.e., preferred activities including swinging and taking a walk) and a picture prompt to provide a continuous, visual reminder of the upcoming reinforcer. Results indicated increases in task engagement and decreases in disruptive behavior during phases when the intervention was applied. Implications for future research and practice are discussed.

Pre-assessment exposure to schedule-correlated stimuli affects choice responding for tasks

Establishing compliance with academic and daily-living-skills instructions is important for shaping and maintaining behavior. In the current study, we exposed two participants to two stimulus conditions that were correlated with different consequences (more work vs. reinforcement) subsequent to a baseline in which responding was undifferentiated. Exposure to the differential consequences produced greater cooperation with the instruction to "pick one" task and response allocation towards the stimulus that was correlated with reinforcement as a consequence for task completion. These results suggest that clarifying the consequences of choice making may facilitate cooperation with task instructions.

Decreasing Work Refusals in an Adult With Intellectual Disability

The authors describe an intervention for work refusals in a 49-year-old man with mild mental retardation, more commonly referred to as mild intellectual disability, and other comorbid Axis I diagnoses. Following a behavioral functional assessment, Intervention A, contingent reinforcement of work attendance with cigarettes and edibles was implemented to increase work attendance. A modified reversal to baseline (Intervention B) retained the contingent reinforcement with edibles but not cigarettes. Following Intervention B, a third intervention (Intervention C) reintroduced contingent reinforcement of work attendance with cigarettes and edibles in addition to a response cost procedure. Contingent reinforcement using the most preferred reinforcer was found to be an effective intervention in increasing work attendance; however, this intervention combined with response cost was found to be superior. Overall, a 45.4% decrease in work refusals was seen from baseline following implementation of contingent reinforcement using cigarettes and edibles (Intervention A), whereas a 65.1% decrease was seen between baseline and contingent reinforcement using cigarettes and edibles combined with response cost (Intervention C). Such decrease in work refusals was maintained during follow-up. Factors responsible for intervention success and implications for clinicians are discussed.

A review of empirical support for differential reinforcement of alternative behavior

Differential reinforcement of alternative behavior (DRA) is one of the most common behavior analytic interventions used to decrease unwanted behavior. We reviewed the DRA literature from the past 30 years to identify the aspects that are thoroughly researched and those that would benefit from further emphasis. We found and coded 116 empirical studies that used DRA, later grouping them into categories that met APA Division 12 Task Force criteria. We found that DRA has been successful at reducing behaviors on a continuum from relatively minor problems like prelinguistic communication to life-threatening failure to thrive. DRA with and without extinction is well established for treating destructive behavior of those with developmental disabilities, and to combat food refusal.

Enabling two persons with multiple disabilities to access environmental stimuli and ask for social contact through microswitches and a VOCA

This study assessed the combination of two microswitches with a voice output communication aid (VOCA) with two persons (an adolescent and a young adult) with multiple disabilities. The microswitches allowed the participants to obtain direct access to preferred environmental stimuli; the VOCA enabled them to ask for caregiver's attention. Initially, the participants were taught to use each of the two microswitches individually and then together. Next, they were taught to use the VOCA and, eventually, this was available together with the microswitches. Results showed that the participants learned to operate the microswitches and the VOCA and used all three of them consistently when they were simultaneously available. Implications of these findings and the potential role of a VOCA combined with conventional microswitches were discussed.