Filby Y, Appel J B
J Exp Anal Behav. 1966 Sep;9(5):521-7. doi: 10.1901/jeab.1966.9-521.
Variable-interval punishment was superimposed on a variable-interval food reinforcement baseline for three groups of rats. The value for the variable-interval punishment schedule was the same as that for the variable-interval food reinforcement schedule, although the two schedules were programmed independently. The three groups were Variable Intervals 0.5, 1, and 3 min. Little or no suppression occurred in the three groups at mild (0.2 and 0.4 ma) intensities of punishment, but at 0.6 ma, complete suppression occurred almost uniformly. During continued punishment, there was no consistent recovery toward the pre-punishment baseline at suppressing intensities of punishment. After punishment was discontinued, recovery from suppression was more rapid the lower the punishment intensity, and the lower the value of the variable-interval schedules of reinforcement and punishment.
对三组大鼠在可变间隔食物强化基线之上施加可变间隔惩罚。可变间隔惩罚程序的值与可变间隔食物强化程序的值相同，尽管这两个程序是独立编程的。这三组的可变间隔分别为0.5分钟、1分钟和3分钟。在轻度（0.2毫安和0.4毫安）惩罚强度下，三组中几乎没有或没有出现抑制现象，但在0.6毫安时，几乎一致地出现了完全抑制。在持续惩罚期间，在抑制性惩罚强度下，没有朝着惩罚前基线的一致恢复。惩罚停止后，惩罚强度越低，强化和惩罚的可变间隔程序的值越低，从抑制中恢复得就越快。
