Estimating the subjective value of future rewards: Comparison of adjusting-amount and adjusting-delay procedures
Estimating the subjective value of future rewards: Comparison of adjusting-amount and adjusting-delay procedures
复制标题
DOI：
10.1016/j.beproc.2012.03.003
复制
发表时间：
2012-07-01
影响因子：
1.3
通讯作者：
Myerson, Joel
中科院分区：
文献类型：
--
作者：
Holt, Daniel D.;Green, Leonard;Myerson, Joel
本研究探讨了延迟奖励的等效折扣是否与不同的实验程序观察。如果基本的决策过程是相同的，那么无论程序如何，都应该观察到类似的结果模式，以及对未来奖励的主观价值的类似估计（即，无差异点）。两个实验比较了三种类型的折扣程序：调整延迟（AD），调整即时金额（AIA）和调整延迟金额（ADA）。对于可以建立贴现函数的两个过程（即，AD和AIA），一个双曲面提供了良好的拟合组和个人水平的数据，和个人的折扣对一个程序往往与他们的折扣对其他。值得注意的是，AIA程序产生了更一致的贴现程度的估计，特别是，AIA程序的贴现不受选择顺序的影响。然而，无论使用这三种程序中的哪一种，都获得了类似的结果模式：参与者系统地低估了延迟奖励的价值，并观察到了强大的幅度效应。虽然每一个程序可能有自己的优点和缺点，在本研究中使用的所有三种类型的程序提供了共同的决策过程的基础折扣延迟奖励收敛的证据。(C)2012爱思唯尔有限公司版权所有。
The present study examined whether equivalent discounting of delayed rewards is observed with different experimental procedures. If the underlying decision-making process is the same, then similar patterns of results should be observed regardless of procedure, and similar estimates of the subjective value of future rewards (i.e., indifference points) should be obtained. Two experiments compared discounting on three types of procedure: adjusting-delay (AD), adjusting-immediate-amount (AIA), and adjusting-delayed-amount (ADA). For the two procedures for which discounting functions can be established (i.e., AD and AIA), a hyperboloid provided good fits to the data at both the group and individual levels, and individuals' discounting on one procedure tended to be correlated with their discounting on the other. Notably, the AIA procedure produced the more consistent estimates of the degree of discounting, and in particular, discounting on the AIA procedure was unaffected by the order in which choices were presented. Regardless of which of the three procedures was used, however, similar patterns of results were obtained: Participants systematically discounted the value of delayed rewards, and robust magnitude effects were observed. Although each procedure may have its own advantages and disadvantages, use of all three types of procedure in the present study provided converging evidence for common decision-making processes underlying the discounting of delayed rewards. (C) 2012 Elsevier B.V. All rights reserved.