University of Kansas.
J Appl Behav Anal. 1971 Fall;4(3):235-9. doi: 10.1901/jaba.1971.4-235.
The disruptive behavior of a 9-yr-old boy was eliminated by the illumination of a light on the subject's desk, which represented the loss of free time later in the day. Instructions alone failed to reduce the frequency of disruptive behavior. When the light was removed and disruptive behavior no longer resulted in a loss of free time, disruptive behavior returned to its previous level.
光照对一个 9 岁男孩的扰乱行为进行了干预,光照代表着当天晚些时候会失去自由时间。仅仅通过指令并不能减少扰乱行为的频率。当灯光被移走,扰乱行为不再导致失去自由时间时,扰乱行为又回到了之前的水平。