Impulsivity is associated with treatment non-completion in cocaine- and methamphetamine-dependent patients but differs in nature as a function of stimulant-dependence diagnosis

Theresa Winhusen, Daniel Lewis, Bryon Adinoff, Gregory Brigham, Frankie Kropp, Dennis M. Donovan, Cindy L. Seamans, Candace C. Hodgkins, Jessica C. DiCenzo, Christopher L. Botero, Davina R. Jones, Eugene Somoza