Powell R W
J Exp Anal Behav. 1973 Mar;19(2):351-60. doi: 10.1901/jeab.1973.19-351.
Discriminative responding in pigeons was studied under multiple variable-interval extinction schedules in which extinction was correlated with either a tone or a white keylight. The two procedures resulted in weak and strong stimulus control, respectively. In the first experiment, there was no interaction between schedule components when stimulus control was strong and reinforcement was omitted under the previously reinforced component. However, there was marked induction between components when stimulus control was weak and responding was extinguished under the previously reinforced component. In the second experiment, hours of food deprivation was varied under two levels of stimulus control. Deprivation mainly influenced response rates under the extinction stimulus, with greater absolute rate increases occurring the lower the existing level of stimulus control. Increases in responding during the extinction stimulus were four times as great from 24 to 72 hours of deprivation as from 24 to 48 hours under conditions of both high and low stimulus control.
在多重可变间隔消退程序下研究了鸽子的辨别性反应，其中消退与一个纯音或一个白色按键灯相关联。这两种程序分别导致了较弱和较强的刺激控制。在第一个实验中，当刺激控制较强且在先前强化的成分下省略强化时，程序成分之间没有相互作用。然而，当刺激控制较弱且在先前强化的成分下反应被消退时，成分之间有明显的诱导作用。在第二个实验中，在两种刺激控制水平下改变食物剥夺的时长。剥夺主要影响消退刺激下的反应率，现有刺激控制水平越低，绝对反应率增加得越大。在高刺激控制和低刺激控制条件下，从24小时到72小时剥夺期间消退刺激下反应的增加量是从24小时到48小时剥夺期间的四倍。
