仅一个成分变化时，关键啄食行为对比作为成分持续时间的函数。

Behavioral contrast for key pecking as a function of component duration when only one component varies.

出版信息

J Exp Anal Behav. 1993 Sep;60(2):331-43. doi: 10.1901/jeab.1993.60-331.

DOI:10.1901/jeab.1993.60-331

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1322180/

Abstract

Pigeons pecked keys for food reinforcers delivered by multiple variable-interval 2-min variable-interval 2-min schedules. Positive behavioral contrast was created by changing one component to extinction; negative contrast was achieved by changing one component to a variable-interval 15-s schedule. The duration of each component was varied independently of the other from 5 to 960 s. The size of positive contrast was greatest when the extinction component was 30 or 60 s long. It did not change significantly with changes in the duration of the variable-interval 2-min component. The absolute size of negative contrast decreased with increases in the duration of the variable-interval 2-min component. It did not change significantly with changes in the duration of the variable-interval 15-s component. These results show that the size of contrast is determined primarily by the duration of the component that provides the less favorable conditions of reinforcement. These results are not predicted by current theories.

摘要

鸽子啄键以获取由多个可变间隔 2 分钟可变间隔 2 分钟时间表提供的食物强化物。通过将一个组件更改为消光来产生积极的行为对比；通过将一个组件更改为可变间隔 15 秒的时间表来实现负对比。每个组件的持续时间与另一个组件的持续时间独立变化，从 5 到 960 秒不等。当消光组件的持续时间为 30 或 60 秒时，正对比的大小最大。它不会随着可变间隔 2 分钟组件持续时间的变化而显著变化。负对比的绝对大小随可变间隔 2 分钟组件持续时间的增加而减小。它不会随着可变间隔 15 秒组件持续时间的变化而显著变化。这些结果表明，对比的大小主要由提供较差强化条件的组件的持续时间决定。这些结果与当前的理论预测不符。