for detecting emerging substance use disorders during adolescence (Martin & Winters, 1998; Pollock & Martin, 1999). Further, it does not appear to inflate our rates of ADHD and CD (Elkins et al., 2007). For example, our DSM-IV lifetime prevalence of ADHD is still lower than other community-based samples that include probable cases (Smalley et al., 2007). We have examined reliability of our consensus procedure by disorder, informant, subject age, and instrument. Interviews of approximately 600 participants were reviewed by two independent, blinded pairs and produced kappas >.74, with all SUD kappas > .90. An independent consensus team re-evaluates every 25th case to ensure continued reliability and to control drift; we continue to have over 90% diagnostic agreement.
