For young adults, all indicators were measured using the SSAGA, which has been found to produce reliable and valid DSM-based criterion counts (Bucholz et al., 1994, Hesselbrock, Easton, Bucholz, Schuckit, & Hesselbrock, 1999). For young adults, indicators were: number of DSM-5 (American Psychiatric Association, 2013) alcohol use disorder symptoms endorsed, number of cannabis use disorder symptoms endorsed, number of adult antisocial behavior symptoms, and number of CD symptoms.
