Alling K, Poling A
Western Michigan University, USA.
J Exp Anal Behav. 1995 May;63(3):331-46. doi: 10.1901/jeab.1995.63-331.
Rats were exposed to two-component multiple schedules of food delivery. In the first experiment, 15 responses were required to produce food in both components. A downward force of 0.25 N (25 g) was always required to operate the response lever in one component. In the other, the required force was 0.25, 0.50, 1.00, or 2.00 N (25, 50, 100, or 200 g). In the second experiment, 0.25 N of force operated the lever in one component, but in the other, the force requirement for five consecutive responses at the beginning, middle, or end of each ratio was increased from 0.25 to 2.00 N. In the third experiment, the number of responses required to produce food was reduced from 15 to 5, and then to 1. Again, the effects of altering response force from 0.25 to 2.00 N were examined. In general, as response force increased in all experiments, mean response rates decreased and mean interresponse times increased.
将大鼠置于食物递送的双成分多重强化程序中。在第一个实验中，两个成分中都需要15次反应才能获得食物。在其中一个成分中，操作反应杆始终需要0.25 N（25 g）的向下力。在另一个成分中，所需的力为0.25、0.50、1.00或2.00 N（25、50、100或200 g）。在第二个实验中，0.25 N的力操作一个成分中的杠杆，但在另一个成分中，每个比率开始、中间或结束时连续五次反应的力要求从0.25 N增加到2.00 N。在第三个实验中，获得食物所需的反应次数从15次减少到5次，然后减少到1次。同样，研究了将反应力从0.25 N改变到2.00 N的影响。总体而言，在所有实验中，随着反应力的增加，平均反应率下降，平均反应间隔时间增加。
