California State University, Los Angeles, USA.
J Appl Behav Anal. 2012 Winter;45(4):709-19. doi: 10.1901/jaba.2012.45-709.
We conducted 2 studies to determine whether dense and thin NCR schedules exert different influences over behavior and whether these influences change as dense schedules are thinned. In Study 1, we observed that thin as well as dense NCR schedules effectively decreased problem behavior exhibited by 3 individuals. In Study 2, we compared the effects of 2 NCR schedules in multielement designs, one with and the other without an extinction (EXT) component, while both schedules were thinned. Problem behavior remained low as the NCR schedule with EXT was thinned, but either (a) did not decrease initially or (b) subsequently increased as the NCR schedule without EXT was thinned. These results suggest that dense schedules of NCR decrease behavior by altering its motivating operation but that extinction occurs as the NCR schedule is thinned. The benefits and limitations of using dense or thin NCR schedules are discussed.
我们进行了两项研究，以确定密集和稀疏的 NCR 时间表对行为产生的不同影响，以及这些影响是否会随着密集时间表的变稀疏而改变。在研究 1 中，我们观察到，密集和稀疏的 NCR 时间表都有效地减少了 3 个人的问题行为。在研究 2 中，我们在多元素设计中比较了两种 NCR 时间表的效果，一种带有和一种不带有消退（EXT）成分，同时两种时间表都变稀疏。当带有 EXT 的 NCR 时间表变稀疏时，问题行为仍然保持较低水平，但当不带有 EXT 的 NCR 时间表变稀疏时，（a）最初没有减少或（b）随后增加。这些结果表明，密集的 NCR 时间表通过改变其激励操作来减少行为，但随着 NCR 时间表的变稀疏，消退会发生。讨论了使用密集或稀疏的 NCR 时间表的优缺点。
