Reporting contingencies of reinforcement in concurrent schedules.
Reporting contingencies of reinforcement in concurrent schedules.
复制标题
报告并发计划中的强化意外事件。
DOI：
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发表时间：
1998
影响因子：
2.7
通讯作者：
M. Davison
中科院分区：
文献类型：
--
作者：
B. Jones;M. Davison
五只鸽子进行了培训，同时可变间隔时间表，其中两个强度的黄光作为区分刺激的开关键程序。一个有条件的歧视，涉及红色和绿色键之间的同时选择遵循每一个从两个替代品获得的选择。如果从亮的备选方案获得了先前的闪烁器，则对红色侧键的响应偶尔得到加强，如果从暗的备选方案获得了先前的闪烁器，则对绿色侧键的响应偶尔得到加强。通过改变两部分条件下正确的红色和正确的绿色响应的识别率，获得了并行时间表替代方案之间的可辨别性的测量。第1部分在并行时间表中安排了相同的强化率，第2部分提供了9：1的并行时间表强化率。第三部分在条件判别中安排了1：9的时间比，并且在不同的条件下，同时安排的时间比是不同的。不同的条件歧视precer的比例并不影响响应分配的并行时间表，但不同的并行时间表precer的比例确实影响条件歧视的性能。这些影响是不兼容的偶然性判别模型的并发调度性能（戴维森和詹金斯，1985年），这意味着一个恒定的判别参数，是独立的获得的precker比。然而，一个更详细的分析条件歧视的表现表明，随着时间的推移，因为改变了替代方案之间的可辨别性。这种效果，结合方面的时间分布的并行时间表中获得的mascers，定性预测摩尔的结果，并确定了操作的条件下，每当偶然的可辨别性保持不变。
Five pigeons were trained on concurrent variable-interval schedules in which two intensities of yellow light served as discriminative stimuli in a switching-key procedure. A conditional discrimination involving a simultaneous choice between red and green keys followed every reinforcer obtained from both alternatives. A response to the red side key was occasionally reinforced if the prior reinforcer had been obtained from the bright alternative, and a response to the green side key was occasionally reinforced if the prior reinforcer had been obtained from the dim alternative. Measures of the discriminability between the concurrent-schedule alternatives were obtained by varying the reinforcer ratio for correct red and correct green responses across conditions in two parts. Part 1 arranged equal rates of reinforcement in the concurrent schedule, and Part 2 provided a 9:1 concurrent-schedule reinforcer ratio. Part 3 arranged a 1:9 reinforcer ratio in the conditional discrimination, and the concurrent-schedule reinforcer ratio was varied across conditions. Varying the conditional discrimination reinforcer ratio did not affect response allocation in the concurrent schedule, but varying the concurrent-schedule reinforcer ratio did affect conditional discrimination performance. These effects were incompatible with a contingency-discriminability model of concurrent-schedule performance (Davison & Jenkins, 1985), which implies a constant discriminability parameter that is independent of the obtained reinforcer ratio. However, a more detailed analysis of conditional discrimination performance showed that the discriminability between the concurrent-schedule alternatives decreased with time since changing over to an alternative. This effect, combined with aspects of the temporal distribution of reinforcers obtained in the concurrent schedules, qualitatively predicted the molar results and identified the conditions that operate whenever contingency discriminability remains constant.