“…A baseline quantitative sample was recruited in 2014–2015 in Los Angeles, California, through targeted (e.g., college campuses and medical cannabis dispensaries) and chain-referral sampling strategies ( Biernacki & Waldorf, 1981 ; Watters & Biernacki, 1989 ), and consisted of 18-to-26-year-old medical cannabis patients ( n = 210) and non-patient cannabis users ( n = 156) (see ( Lankenau et al, 2017b ) for more details). A baseline qualitative sample ( n = 62) was derived from the baseline quantitative sample based on the presence/absence of a chronic health condition; frequency of cannabis use (median = 25 hits per day, range 2–101 hits per day; 52.9% of the baseline qualitative sample reported 25 hits per day or less); and Emotion Regulation Questionnaire’s emotion suppression (median score = 3.25, range 1.24–6.25; 58.8% of the baseline qualitative sample scored 3.25 or less on emotion suppression subscale) and cognitive reappraisal (median score=4.83, range 1.67–7.00; 52.9% of the baseline qualitative sample scored 4.83 or less on cognitive reappraisal subscale) subscales scores (see ( Fedorova et al, 2020 ) for more details; ( Gross & John, 2003 ). Emotion regulation has been identified as an important construct in substance use research including cannabis use among young adults ( Nichols et al, 2021 ; Wong et al, 2013 ).…”