PREMACK D, SCHAEFFER R W, HUNDT A
J Exp Anal Behav. 1964 Jan;7(1):91-6. doi: 10.1901/jeab.1964.7-91.
Rats were required to complete varying numbers of licks (FR), ranging from 10 to 300, in order to free an activity wheel for predetermined times (CT) ranging from 2 to 20 sec. The reinforcement of drinking by running was shown both by an increased frequency of licking, and by changes in length of the burst of licking relative to operant-level burst length. In log-log coordinates, instrumental licking tended to be a linear increasing function of FR for the range tested, a linear decreasing function of CT for the range tested. Pause time was implicated in both of the above relations, being a generally increasing function of both FR and CT.
要求大鼠完成不同次数的舔舐(固定比率,从10次到300次),以便在2秒到20秒的预定时间(定时)内使活动轮解锁。通过舔舐频率的增加以及舔舐爆发长度相对于操作水平爆发长度的变化,表明了奔跑对饮水的强化作用。在对数-对数坐标中,在所测试的范围内,工具性舔舐对于固定比率往往是线性增加函数,对于定时则是线性减少函数。上述两种关系都涉及停顿时间,停顿时间总体上是固定比率和定时的递增函数。