Zangrillo Amanda N, Fisher Wayne W, Greer Brian D, Owen Todd M, DeSouza Andresa A
University of Nebraska Medical Center's Munroe-Meyer Institute.
Int J Dev Disabil. 2016;62(3):147-156. doi: 10.1080/20473869.2016.1176308. Epub 2016 Apr 27.
Previous research has supported functional communication training (FCT) as an effective intervention for reducing challenging behavior. Clinicians often program schedule-thinning procedures to increase the portability of the treatment (i.e., reinforcement is provided less frequently). For individuals with escape-maintained problem behavior, chained schedules have proven effective in increasing task completion and supplemental procedures may ameliorate reemergence of challenging behavior as access to reinforcement is decreased. The present study compared the use of a chained schedule-thinning procedure with and without alternative reinforcement (e.g., toys and activities) embedded in an intervention in which escape from the task is provided contingent on a request for a break.
Two individuals with escape-maintained challenging behavior participated. We compared two treatment conditions, escape-only and escape-to-tangibles, using a single-subject, alternating treatments design with each treatment implemented in a distinct academic context.
With the escape-to-tangibles treatment, we reached the final schedule in both contexts with both participants (4 successes out of 4 applications). We did not reach the final schedule with either participant with the escape-only intervention (0 successes out of 2 applications).
The current results provided preliminary confirmation that providing positive plus negative reinforcement would decrease destructive behavior, increase compliance, and facilitate reinforcer-schedule thinning.
先前的研究支持将功能性沟通训练(FCT)作为减少挑战性行为的有效干预措施。临床医生经常安排时间表稀疏程序以提高治疗的便携性(即强化的提供频率降低)。对于以逃避为维持因素的问题行为个体,连锁时间表已被证明在提高任务完成率方面有效,并且随着获得强化的机会减少,补充程序可能会改善挑战性行为的再次出现。本研究比较了在一种干预措施中使用嵌入或不嵌入替代强化物(如玩具和活动)的连锁时间表稀疏程序,在该干预措施中,根据休息请求提供从任务中逃避的机会。
两名以逃避为维持因素的挑战性行为个体参与了研究。我们采用单被试交替治疗设计,在两种不同的学术情境中实施每种治疗,比较了仅逃避和逃避到有形物品两种治疗条件。
在逃避到有形物品治疗中,两名参与者在两种情境下都达到了最终时间表(4次应用中有4次成功)。在仅逃避干预中,两名参与者均未达到最终时间表(2次应用中有0次成功)。
目前的结果提供了初步证实,即提供正强化和负强化会减少破坏性行为、增加顺从性并促进强化时间表的稀疏。