Marijuana Problems Scale (MPS)
Time frame: 6 months
19-item self-report measure of problems related to cannabis use (e.g., problems with work, school, social functioning). Participants rate 19 items on a 3- point Likert scale. Scores range from 0 to 38, with higher scores indicating more problems related to cannabis use.
Marijuana Motives Measure - Coping
Time frame: 6 months
The MMM is a 25-item self-report measure of cannabis motives, including coping-oriented motives for cannabis use. Participants respond to a list of motives (e.g., to forget my worries, to get high) on a 5-point Likert scale. Scores range from 25 to 125 for the entire measure, with higher scores indicating higher levels of various types of marijuana motives. The primary motive that will be used as an outcome is coping motives (scores range from 4 to 20 on this subscale).
Patient Reported Outcome Measurement Information System - Anxiety Measurement Information System (PROMIS) Anxiety and Depression
Time frame: 6 months
7-items assessing self-reported symptoms of anxiety (e.g., anxious, worried, nervous) rated on a 5-point scale. Scores range from 7 to 35, with higher scores indicating higher levels of anxiety. T-scores are used for final scoring.
Patient Reported Outcome Measurement Information System - Depression Measurement Information System (PROMIS) Anxiety and Depression
Time frame: 6 months
8 items assessing self-reported symptoms of depression (e.g., worthlessness, helplessness, sadness) rated on a 5-point scale. Scores range from 8 to 40, with higher scores indicating higher levels of depression. T-scores are used for final scoring.
Cannabis Use Frequency
Time frame: 6 weeks
Ecological momentary assessment will include self-report measures of whether or not cannabis was used that day (yes/no). The item will be scored as 0 (no) vs. 1 (yes), with higher scores indicating higher levels of cannabis use frequency.
Cannabis Use Quantity
Time frame: 6 weeks
Ecological momentary assessment will assess quantity of cannabis used on an 8-point scale, assessed 1x/day over 6 weeks. Scores will range from 1-8, with higher scores indicating a higher quantity of cannabis consumed.
Marijuana Cravings - Emotionality Questionnaire
Time frame: 6 weeks
Ecological momentary assessment will include a state version of the emotionality subscale of the Marijuana Cravings Questionnaire. This consists of 4 items rated on a 7-point Likert scale, assessed 4x/day over 6 weeks. Scores range from 4 to 28, with higher scores indicating higher levels of cravings.
PTSD Checklist for Diagnostic and Statistical Manual -5 (DSM-5) (PCL-5)
Time frame: 6 months
20-item self-report measure of DSM-5 PTSD symptoms, including 4 symptom clusters of PTSD (re-experiencing, avoidance, negative alterations in cognition and mood, alterations in arousal and reactivity). Participants respond to items corresponding to each DSM-5 symptom of PTSD on a 5-point Likert scale (0 to 4). Scores range from 0 to 80, with higher scores indicating higher levels of PTSD symptoms.