The Customary Drinking and Drug use Record (Brown et al., 1998) collected from all teens detailed information on quantity and frequency of lifetime and past 3-month alcohol, marijuana and other drug use (including misuse of prescription and over-the-counter medications), as well as abuse/dependence, withdrawal, and negative consequences. The Timeline Followback (Sobell & Sobell, 1992) assessed youth and parent report of teens' chronicity and intensity of substance use for each of the 28 days preceding the scan session (see Tapert et al., 2007).
