Measuring state changes in human delay discounting: an experiential discounting task
Measuring state changes in human delay discounting: an experiential discounting task
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DOI：
10.1016/j.beproc.2004.06.003
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发表时间：
2004-11-30
影响因子：
1.3
通讯作者：
Schiffbauer, R
中科院分区：
文献类型：
--
作者：
Reynolds, B;Schiffbauer, R
提出了一种新的体验折扣任务（EDT）。与现有的基于问题的延迟贴现测量不同，该测量依赖于任务完成期间的想象结果，该 EDT 要求参与者在测量期间体验选择结果（即延迟和伪消费反应）。作为该任务对折扣变化的敏感性的初步检查。 12 名参与者（六名女性）完成了计时测试（生产和繁殖），这是一种基于问题的延迟折扣衡量方法，以及非睡眠剥夺（清醒 7 小时）和睡眠剥夺（清醒 21 小时）条件下的 EDT。基于睡眠剥夺会增加冲动行为的证据，假设参与者会低估生产和繁殖过程中的时间间隔，并在睡眠不足时通过贴现程序明显更多地贴现。不幸的是，由于任务完成无效，无法报告基于问题的折扣程序的数据。然而，正如假设的那样，某些生产和繁殖间隔在计时测试中没有得到充分体现，并且当参与者睡眠不足时，EDT 的折扣明显更大。此外，双曲线函数比指数函数更好地描述了 EDT 折扣率；这与之前的延迟贴现研究是一致的。这些初步结果表明，此 EDT 可能是评估贴现流程状态变化的有用措施。 (C) 2004 Elsevier B.V. 保留所有权利。
A new experiential discounting task (EDT) is presented. Unlike existing question-based measures of delay discounting, which rely on imagined consequences during task completion, this EDT requires that participants experience choice consequences (i.e. delays and pseudo consumatory responses) during the measurement period. As a preliminary examination of this task's sensitivity to variability in discounting. 12 participants (six females) completed a timing test (production and reproduction), a question-based measure of delay discounting, and the EDT during non-sleep-deprived (awake 7 h) and sleep-deprived (awake 21 h) conditions. Based on evidence that sleep deprivation increases impulsive behavior, it was hypothesized that participants would underrepresent time intervals in both production and reproduction procedures and discount significantly more with the discounting procedures while sleep deprived. Unfortunately, data from the question-based discounting procedure could not be reported due to invalid task completion. However, as hypothesized, certain production and reproduction intervals were underrepresented on the timing test, and discounting was significantly steeper on the EDT when participants were sleep deprived. Also, rate of discounting on the EDT was better characterized by a hyperbolic function than by exponential function; which is consistent with previous delay-discounting research. These preliminary results suggest this EDT may be a useful measure for assessing state changes in discounting processes. (C) 2004 Elsevier B.V. All rights reserved.