and if used on 2+ (9–11 year olds) or 3+ (12+ years) occasions in past 6 monthsAlcoholRAPI (White and Labouvie, 1989)Cumulative problem symptoms due to alcohol useIf heard of alcohol and if used on 2+ (9–11 year olds) or 3+ (12+ years) occasions in past 6 monthsAlcoholMPI (Johnson and White, 1989, Simons et al., 1998)Cumulative problem symptoms due to cannabis useIf heard of cannabis and if used on 2+ (9–11 year olds) or 3+ (12+ years) occasions in past 6 monthsCannabisNicotine Dependence (Hyland et al., 2016) +Cumulative symptoms of nicotine dependenceIf heard of nicotine and if used on 2+ (9–11 year olds) or 3+ (12+ years) occasions in past 6 monthsNicotineDPI (Johnson and White, 1989, Caldwell, 2002, Kingston et al., 2011)Cumulative problem symptoms due to other illicit drug use (excluding cannabis)If heard of other illicit drug and if used on 2+ (9–11 year olds) or 3+ (12+ years) occasions in past 6 monthsAny other illicit drug (excluding cannabis)Parent MeasuresConstructGatingDrugs CoveredRecent Substance UsePLUS form (Brown et al., 2015) *Hours since last use of caffeine or prescription medication (up to 24 h)NoneCaffeine, OTC, prescription medications Factors Impacting Substance Use RiskAvailability of Substances (Johnston et al., 2017) ^Parent reports how easily youth may
