Preference reversals with food and water reinforcers in rats
Preference reversals with food and water reinforcers in rats
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DOI：
10.1901/jeab.2003.79-233
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发表时间：
2003-03-01
影响因子：
2.7
通讯作者：
Estle, SJ
中科院分区：
文献类型：
--
作者：
Green, L;Estle, SJ
老鼠可以在较小的立即可用的奖励和延迟后可用的较大奖励之间进行选择。在一个阶段，奖励是食物，在另一个阶段，奖励是水。在选择的呈现和奖励的交付之间增加了持续的延迟。随着选择和奖励传递之间的时间从0增加到25秒，所有大鼠（除了水相中的一只）都将其偏好从较小的，更快的选择转变为较大的，更晚的选择。这些发现将偏好逆转动物模型的一般性扩展到了性质不同的受试者。此外，在同一动物中同时存在冲动和自我控制的选择，这与自我控制可以被理解为选择行为的观点是一致的，并且自我控制的物种差异可能是程度上的差异，而不是种类。
Rats were given a choice between a smaller, immediately available reward and a larger reward available after a delay. In one phase, the reward was food and in another phase, the reward was water. Constant delays were added between the choice presentation and the delivery of the reward alter natives. As the time between choice and reward delivery increased front 0 to 25 s, all rats (except one in the water phase) reversed their preference from the smaller, sooner alternative to the larger, later alternative. These findings extend the generality of the preference-reversal animal model to qualitatively different reinforcers. Furthermore, the presence of both impulsive and self-control choices within the same animal is consistent with the view that self-control may be understood as choice behavior, and that species differences in self-control may be differences in degree, not kind.