measuring standard drinks, we will also be able to measure binge-drinking episodes (can be defined in several ways based on children’s and adolescents body sizes (Donovan, 2009)), drinks per drinking episode, and days of co-occurring use of other substance categories (e.g., cigarettes, cannabis).2.Cannabis and cannabinoids. Cannabis is a complex substance to measure, as there are differing potency, product content (e.g., THC and CBD), and routes of administration, which have historically not been well addressed in cannabis research (Feldstein Ewing et al., 2017; Lisdahl et al., 2014). Thus, the ABCD Study will track smoked cannabis (“smoked marijuana, also called pot, grass, weed, ganja”) assessed in grams; blunts (combined nicotine and cannabis) measured in grams; edible cannabis (“marijuana that you eat, such as pot cookies, gummy bears, brownies”) measured in occasions; cannabis concentrates (”marijuana oils or concentrates such as 710, hash oil, BHO/butane hash oil, dabs, shatter, budder, honey oil; CO2 oil, vape pen, Rick Simpson Oil/RSO, phoenix tears”) measured in occasions; cannabis –infused alcohol drinks (e.g., THC-infused wine, beer or liquor) measured in standard drinks; cannabis tinctures measured in ml; and synthetic cannabinoids (“fake marijuana or synthetics such as K2 and spice”) measured in occasions. Visual aids include pictures and descriptions
