Computerized Intervention for Distress Intolerance

Self-report measure of Distress Intolerance (Distress Intolerance Index [DII]; McHugh & Otto, 2012). The DII is a self-report measure comprised of 10 items that are summed together to form a total score (minimum: 0; maximum: 40). Higher scores indicate greater distress intolerance (i.e., worse outcome).

Behavioral measure of Distress Intolerance (Mirror-Tracing Persistence Task [MTPT]; Macatee & Cougle, 2015). The MTPT is a behavioral persistence measure that assesses behavioral distress intolerance via the latency to quit a distressing task. Scores range from 0 seconds to a maximum persistence time of 7 minutes. Lower scores indicate greater distress intolerance (i.e., worse outcome).

Self-report measure of marijuana use-related problems (Marijuana Problems Scale [MPS]; Stephens et al., 2000). The MPS is a self-report measure of marijuana use-related problem severity in the past month. The measure is comprised of 19 items with a minimum score of 0 and a maximum score of 38. Higher scores indicate greater marijuana use-related problem severity in the past month (i.e., worse outcome).

Interviewer-assessed Diagnostic and Statistical Manual of Mental Disorders (DSM)-5 Cannabis Use Disorder diagnostic criteria. DSM-5 Cannabis Use Disorder criteria were assessed via interview at baseline and again at the 4-month follow-up. Total number of Cannabis Use Disorder criteria was used to assess Cannabis Use Disorder severity (minimum score: 0; maximum score: 11). Higher scores indicate greater Cannabis Use Disorder severity (i.e., worse outcome).

Percent cannabis use days in the past month (Timeline follow-back [TLFB]; Hjorthoj et al., 2012). The Timeline follow-back (TLFB) is a self-report measure that assesses cannabis use over the past 4 weeks. Percentage of days on which cannabis was used in the past four weeks was used to assess cannabis use frequency (minimum: 0%; maximum: 100%). Higher scores indicate greater cannabis use frequency (i.e., worse outcome).

Self-reported motives for cannabis use (Marijuana Motives Measure [MMM]; Zvolensky et al., 2007). The Marijuana Motives Measure (MMM) is a self-report measure that assesses different motives for marijuana use. The coping motives subscale was the subscale of interest in this project. The Coping motives subscale is comprised of 4 items that are then averaged (minimum score: 1; maximum score: 5). Greater scores indicate greater coping motives for marijuana use (i.e., worse outcome).

Self-reported state craving for marijuana (Marijuana Craving Questionnaire [MCQ]; Heishman et al., 2009). The Marijuana Craving Questionnaire (MCQ) is a self-report measure of current craving for marijuana use. The emotionality subscale was the subscale of interest in this project. The Emotionality subscale is comprised of 5 items that are then averaged (minimum score: 1; maximum score: 7). Greater scores indicate greater marijuana craving (i.e., worse outcome). In this project, the outcome of interest is the extent to which a laboratory stress induction increases state marijuana craving.

Acute Stress modulation of the Late Positive Potential (LPP) to Cannabis Cues. The LPP to visual cannabis cues before and after a laboratory stress induction will be measured as a neurophysiological index of acute stress modulation of cannabis cue incentive salience. Greater values indicate a larger neural response to cannabis cues during acute stress (i.e., worse outcome).

Acute Stress modulation of the Late Positive Potential (LPP) to threat stimuli. The LPP to visual threat stimuli before and after a laboratory stress induction will be measured as a neurophysiological index of acute stress modulation of threat reactivity. Greater values indicate a larger neural response to threat during acute stress (i.e., worse outcome).

Acute stress modulation of the N2 to no-go stimuli. The N2 to no-go vs. go stimuli on a go/no-go task before and after a laboratory stress induction will be measured as a neurophysiological index of the acute stress modulation of response inhibition. More negative values indicate a larger neural response to stimuli requiring response inhibition during acute stress (i.e., better outcome).