Zeiler M D
J Exp Anal Behav. 1968 Mar;11(2):107-15. doi: 10.1901/jeab.1968.11-107.
Pigeons were trained on a three-stimulus simultaneous discrimination with reinforcements given on fixed-ratio schedules ranging from one response per reinforcement to 205 responses per reinforcement. Responses to any of the three stimuli advanced the ratio, but, when it was completed, a reinforcement followed a response to one designated stimulus. Throughout the ratio, the birds responded mainly to the designated stimulus. The relatively few responses to the other stimuli usually occurred immediately after postreinforcement pauses. The distribution of responses to the various stimuli was not affected by omitting reinforcements.
鸽子接受了三刺激同时辨别训练，强化按照固定比率时间表进行，从每一次强化一个反应到每一次强化205个反应。对三种刺激中任何一种的反应都会推进比率，但当比率完成时，对一种指定刺激的反应之后会有一次强化。在整个比率过程中，鸽子主要对指定刺激做出反应。对其他刺激相对较少的反应通常发生在强化后暂停之后立即出现。对各种刺激的反应分布不受省略强化的影响。
