Genetic influences on delay discounting in smokers: examination of a priori candidates and exploration of dopamine-related haplotypes

RationaleDelay discounting is a behavioral economic index of impulsivity that reflects a person’s relative preference for small immediate rewards versus larger delayed rewards. Elevated delay discounting is robustly linked to addictive disorders and has been increasingly investigated as a viable endophenotype for genetic influences on addiction.ObjectiveThe aim of this study is to examine associations between delay discounting and two a priori …