Yarczower M, Gollub L R, Dickson J F
J Exp Anal Behav. 1968 Jul;11(4):415-23. doi: 10.1901/jeab.1968.11-415.
Pigeons were exposed to a multiple schedule which provided equally frequent reinforcement in the presence of two stimuli but which produced markedly different rates of key-pecking. Generalization gradients were displaced away from the stimulus associated with the lower rate of key-pecking. Another group of pigeons had similar training, except that a low rate of key-pecking was established in a stimulus with a much higher frequency of food reinforcement. In this case, the generalization gradients were not affected by the training on the schedule producing a low response rate.
鸽子被置于一种多重强化程序中，该程序在两种刺激出现时给予同等频繁的强化，但产生的啄键速率明显不同。泛化梯度偏离了与较低啄键速率相关的刺激。另一组鸽子接受了类似的训练，只是在食物强化频率高得多的刺激中建立了低啄键速率。在这种情况下，泛化梯度不受产生低反应率的程序训练的影响。
