IQ and nonplanning impulsivity are independently associated with delay discounting in middle-aged adults
IQ and nonplanning impulsivity are independently associated with delay discounting in middle-aged adults
复制标题
DOI：
10.1016/j.paid.2006.06.026
复制
发表时间：
2007-01-01
影响因子：
4.3
通讯作者：
Manuck, Stephen B.
中科院分区：
文献类型：
--
作者：
de Wit, Harriet;Flory, Janine D.;Manuck, Stephen B.
冲动是一种复杂的多维结构，可以通过自我报告和客观行为任务来衡量。然而，大多数使用行为任务的研究都利用了相对较小的同质人群。在这个项目中，我们使用 Barratt 冲动量表 (BIS) 和延迟贴现（一种对立即奖励与延迟奖励的偏好的行为衡量标准）在大量成年人样本 (N=606) 中检查了自我报告的冲动性。自我报告和行为测量的表现与人口特征有关，包括年龄、性别、种族、智商、受教育年限和家庭收入。使用分层多元回归，我们发现对即时奖励的偏好与 BIS 的非计划性冲动子量表相关，并且在控制其他变量后，也与智力相关。即使考虑了包括社会经济指标在内的其他变量，延迟贴现或对立即奖励的偏好仍与智力相关，这一发现表明，这种形式的冲动与智力之间可能存在以前未被认识到的联系。这也表明在旨在衡量冲动行为的研究中应考虑智力因素。 (c) 2006 年，爱思唯尔有限公司出版。
Impulsivity is a complex and multidimensional construct measured using both self-report measures and objective behavioral tasks. However, most studies using behavioral tasks have utilized relatively small homogeneous populations. In this project we examined both self-reported impulsivity, using the Barratt Impulsiveness Scale (BIS), and delay discounting, a behavioral measure of preference for immediate over delayed rewards, in a large sample of adults (N=606). Performance on the self-report and behavioral measures was examined in relation to demographic characteristics including age, sex, race, IQ, years of school and family income. Using hierarchical multiple regression we found that preference for immediate rewards was related to the Nonplanning impulsiveness subscale of the BIS and, after controlling for other variables, also related to intelligence. The finding that delay discounting, or preference for immediate rewards, is related to intelligence even after taking into account other variables, including socioeconomic indicators, suggests that there may be previously unrecognized links between this form of impulsivity and intelligence. This also suggests that intelligence should be taken into account in studies designed to measure impulsive behaviors. (c) 2006 Published by Elsevier Ltd.