Delay discounting of real and hypothetical rewards III: Steady-state assessments, forced-choice trials, and all real rewards
Delay discounting of real and hypothetical rewards III: Steady-state assessments, forced-choice trials, and all real rewards
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DOI：
10.1016/j.beproc.2005.02.003
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发表时间：
2005-05-31
影响因子：
1.3
通讯作者：
Madden, GJ
中科院分区：
文献类型：
--
作者：
Lagorio, CH;Madden, GJ
关于延迟折扣的人类研究忽略了动物研究的几个典型步骤：强迫选择试验、每次反应后的后果以及对稳定反应模式的评估。目前的研究在两种情况下操纵了这些过程，分别是真实的奖励和假设的奖励。六名大学生参加了每天的实验，在实验中，他们评估了假设奖励和真实奖励的稳态贴现。与第一天的折扣评估相比，没有发现重复暴露于假设奖励的系统性影响。同样，也没有检测到奖励类型（真实或假设）的系统性影响。当结合之前的研究未能发现假设奖励和潜在真实奖励之间的差异时，这些发现表明，在延迟折扣研究中，评估单次会话中假设奖励的折扣是一个实用而有效的过程。(c) 2005 Elsevier B.V.版权所有
Human research in delay discounting has omitted several procedures typical of animal studies: forced-choice trials, consequences following each response, and assessment of stable response patterns. The present study manipulated these procedures across two conditions in which real or hypothetical rewards were arranged. Six college students participated in daily sessions, in which steady-state discounting of hypothetical and real rewards was assessed. No systematic effects of repeated exposure to hypothetical rewards was detected when compared with first day assessments of discounting. Likewise, no systematic effect of reward type (real versus hypothetical) was detected. When combined with previous research failing to detect a difference between hypothetical and potentially real rewards, these findings suggest that assessing discounting of hypothetical rewards in single sessions is a practical and valid procedure in the study of delay discounting. (c) 2005 Elsevier B.V. All rights reserved.