We investigated how differential payoffs affect temporal discrimination. In a temporal bisection task, pigeons learned to choose one key after a short sample and another key after a long sample. When presented with a range of intermediate samples they produced a Gaussian psychometric function characterized by a location (bias) parameter and a scale (sensitivity) parameter. When one key yielded more reinforcers than the other, the location parameter changed, with the pigeons biasing their choices toward the richer key. We then reproduced the bisection task in a long operant chamber, with choice keys far apart, and tracked the pigeons' motion patterns during the sample. These patterns were highly stereotypical-on the long sample trials, the pigeons approached the short key at sample onset, stayed there for a while, and then departed to the long key. The distribution of departure times also was biased when the payoff probabilities differed. Moreover, it is likely that temporal control decreased while control by location increased. No evidence was found of changes in temporal sensitivity. The results are consistent with models of timing that take into account bias effects and competition of stimulus control. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

中文翻译：

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在时间平分任务中通过差异回报来偏置性能。

我们调查了差异收益如何影响时间歧视。在暂时的二等分任务中，鸽子学会了在短暂采样后选择一个关键，而在长时间采样后选择另一个关键。当提供一系列中间样本时，它们会产生高斯心理测验函数，其特征是位置（偏差）参数和比例（灵敏度）参数。当一个钥匙比另一个钥匙产生更多的补强剂时，位置参数就会改变，鸽子会将他们的选择偏向较富裕的钥匙。然后，我们在一个较长的操作室中重现了对分任务，选择键相距很远，并在采样过程中跟踪了鸽子的运动模式。这些模式是非常刻板的-在长期样本试验中，鸽子在样本发作时就接近了短键，并在那里呆了一段时间，然后离开长键。当支付概率不同时，出发时间的分布也有偏差。此外，时间控制可能会减少，而位置控制会增加。没有证据表明时间敏感性有变化。结果与考虑偏见效应和刺激控制竞争的时机模型一致。（PsycINFO数据库记录（c）2019 APA，保留所有权利）。