时间贴现的性质与脑机制  

The Property and Neural Mechanism of Temporal Discounting

作　　者：何嘉梅[1] 黄希庭[1] 

机构地区：[1]西南大学心理学院,重庆400715

出　　处：《心理科学进展》2009年第1期98-105,共8页Advances in Psychological Science

基　　金：教育部2006年度高等学校博士学科点专项科研基金(20060635002);西南大学国家重点学科项目(NSKD06001)

摘　　要：时间贴现是指个人对事件的价值量估计随着时间的流逝而下降的心理现象,它是行为选择理论的一个重要组成部分。着重介绍了时间贴现的数学模型(指数模型、双曲线模型族、非双曲线模型)、时间贴现现象和概率贴现现象的联系、延迟兑现与提前兑现时间贴现不对称现象及其理论解释,还讨论了时间贴现现象的神经机制研究。提出了时间贴现未来研究的几个主要问题。Temporal discounting is a psychological phenomenon which the value of event decreases as time, it＇s the important component of behavioral choice theory. The property and mechanism of temporal discounting is reviewed. The attention is concentrate on the function of temporal discounting which display the process of its value discount with the time （exponential function ,hyperbolic function, and q-exponential function）, the relation of the temporal discounting and the probability discounting, theory of delayed and accelerated temporal discounting and discussion on neural mechanism about temporal discounting. Some problems in the future researches are proposed.

关 键 词：时间贴现 时间贴现函数 概率贴现 延迟兑现和提前兑现 神经机制 

分 类 号：B844[哲学宗教—发展与教育心理学]