Impulsivity and rapid discounting of delayed hypothetical rewards in cocaine-dependent individuals

被引:417
作者
Coffey, SF
Gudleski, GD
Saladin, ME
Brady, KT
机构
[1] Univ Buffalo State Univ New York, Dept Counseling Sch & Educ Psychol, Buffalo, NY 14203 USA
[2] Med Univ S Carolina, Dept Psychiat & Behav Sci, Charleston, SC USA
[3] Univ Buffalo State Univ New York, Dept Psychiat, Buffalo, NY USA
关键词
D O I
10.1037/1064-1297.11.1.18
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
In this study, crack/cocaine-dependent (CD) and non-drug-using matched control (MC) participants were presented with hypothetical immediate and delayed rewards, with 16 delay conditions ranging from 5 min to 25 years. All participants were presented with hypothetical monetary rewards; however, the CD group was also presented with hypothetical crack/ cocaine rewards. The objective value of the rewards ranged from $1 to $1,000. Hyperbolic discounting functions provided a good fit of the data. The CD group discounted monetary rewards at a higher rate than the MC group did, and the CD group discounted crack/cocaine rewards at a higher rate than it did monetary rewards. Moreover, scores on self-report measures indicated greater impulsivity in the CD group when compared with the MC group.
引用
收藏
页码:18 / 25
页数:8
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