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Within-person and between-person associations of access to environmental reward with alcohol and cannabis use and consequences among young adults

Sophie Coelho, Christian Hendershot, Jeffrey Wardell

Recent behavioural economic models of substance use suggest that low access to environmental reward may increase risk for heavy substance use and associated harms. Most prior studies of these associations have been cross-sectional and have focused on…

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Prospective associations of behavioral economic demand for cannabis and alcohol with simultaneous cannabis and alcohol use among young adults

Sophie Coelho, Christian Hendershot, Jeffrey Wardell

Behavioral economic demand for cannabis and alcohol is robustly associated with cannabis use and alcohol use, respectively. However, few studies have examined the…

Executive functions and behavioral economic demand for cannabis among young adults: Indirect associations with cannabis consumption and cannabis use disorder

Sophie Coelho, Christian Hendershot, Elizabeth Aston, Anthony Ruocco, Lena Quilty, Rachel Tyndale, Jeffrey Wardell

Behavioral economic demand for cannabis is robustly associated with cannabis consumption and cannabis use disorder (CUD). However, few studies have examined the processes underlying individual differences in the relative valuation of cannabis…

Randomized controlled trial of a smartphone app designed to reduce unhealthy alcohol consumption

John Cunningham, Alexandra Godinho, Christina Schell, Joseph Studer, Jeffrey Wardell, Claire Garnett, Nicolas Bertholet

Unhealthy alcohol use is common and causes tremendous harm. Most people with unhealthy alcohol use will never seek formal alcohol treatment. As an alternative, smartphone apps have been developed as one means to provide…

Indirect Associations Between PTSD Symptoms and Cannabis Problems in Young Adults: The Unique Roles of Cannabis Coping Motives and Medicinal Use Orientation

Kyra Farrelly, Matthew Keough, Jeffrey Wardell

Cannabis use in young adulthood has been associated with exposure to traumatic events and posttraumatic stress disorder (PTSD)…

Screening for Cannabis Use Disorder among Young Adults: Sensitivity, Specificity, and Item-Level Performance of the Cannabis Use Disorders Identification Test - Revised.

Created by Sophie Coelho, Christian Hendershot, Lena Quilty & Jeffrey Wardell.

The Cannabis Use Disorders Identification Test Revised (CUDIT-R) is a widely used screening tool. However, its utility in screening for cannabis use disorder (CUD) among young adults requires further investigation…