The CTR group included 51 healthy individuals with no history of substance abuse/dependence assessed using the Structured Clinical Interview for DSM-IV-TR Axis I Disorders, Research Version, Patient Edition (SCID-I/P) (First et al., 2002). Control subjects with current abuse or dependence of alcohol were excluded. All control subjects reported themselves as non-smokers and scored zero for the FTND. None of the control subjects reported use of marijuana. AUDIT, BDI, ImpSS and income measures were not collected for this group.
