The genetics of impulsivity: evidence for the heritability of delay discounting.

ABSTRACT:

Background

Delay discounting (DD), a decline in the subjective value of reward with increasing delay until its receipt, is an established behavioral model of impulsive choice, a key component of a broader impulsivity construct. Greater DD, i.e., a tendency to choose smaller immediate over larger delayed rewards, has been implicated as a potential intermediate phenotype (endophenotype) for addictive disorders and comorbid externalizing psychopathology, particularly in adolescence. However, genetic and environmental origins of DD remain unclear. Accordingly, the goal of the present study was to assess heritability of DD, an important aspect of its utility as an endophenotype.

Methods

A commonly used computerized procedure involving choice between varying amounts of money avail

SUBMITTER: Anokhin AP 

PROVIDER: S-EPMC4416979 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature