the “… did you get high?” item, an additional question followed for those who responded in the affirmative, asking “How high did you get?” Participants responded on a 3-point scale, indicating if they got “a little,” “quite a bit,” or “very much” high. In scoring this item, participants’ responses were combined with the previous item and placed on a scale between 0 and 1, such that possible scores included 0 (did not get high), 0.33 (a little high), 0.66 (quite a bit high), and 1 (very much high). Each item was summed such that total scores on the early-adulthood problematic substance use scale varied from 0 to 5, depending on the substance.
