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Behavioral Treatment of Adolescent Substance Use — SMART  

Substance Use Disorders Clinical Trial

Official title:
Behavioral Treatment of Adolescent Marijuana Use

Clinical Trial Summary

This study will continue research designed to improve treatment outcomes for adolescent substance use disorders by integrating neuroscience- and behaviorally-based treatments. In particular, this project will be the first to evaluate whether Working Memory Training can enhance cognitive function and reduce impulsive decision making to improve abstinence outcomes. In addition, an adaptive abstinence-based incentive program will be evaluated as a new method for intervening with those who do not respond to their first-line treatment.

Clinical Trial Description

The study will test two novel strategies to enhance outcomes. Working Memory Training (WMT), an efficacious method for strengthening specific cognitive processes, aims to improve factors (e.g., delay discounting / impulsive decision-making) that have shown a strong relation to substance use and treatment response. Second, more intensive and higher magnitude CM (ICM) will be used to motivate abstinence among teens who are not abstinent by Week 4. The investigators hypothesize that these strategies will improve outcomes by modifying a fundamental cognitive system involved in making choices to engage in risky behavior and by increasing motivation to abstain in early nonresponders. Aim 1 will pilot and refine the new procedures in a community clinic in preparation for the randomized trial. A sequential, multiple assignment randomized trial (SMART) will allow the study to determine the most effective first-line treatment and the most effective adaptive strategy (Aim 2). All teens will begin treatment with CM or CM/WMT. After 4 weeks, responders will continue in their first-line treatments, while nonresponders will be randomized to ICM or to continue with first-line treatment. Aim 3 will conduct mechanistic analyses to assess whether cognitive changes related to WMT engender increased abstinence, and whether specific tailoring variables moderate treatment effects. Aim 4 will gather formative data on implementation factors to inform future large-scale studies and dissemination efforts. Primary hypotheses are: (1) first-line treatment with WMT will improve abstinence outcomes and reduce relapse; (2) strategies with ICM for nonresponders will result in better outcomes than those without; (3) WMT will reduce delay discounting, which will predict outcome. The unique approach holds promise for reducing multiple types of risky behaviors by affecting basic mechanisms that determine impulsive decision-making. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02063984
Study type Interventional
Source Dartmouth-Hitchcock Medical Center
Contact
Status Completed
Phase N/A
Start date November 2013
Completion date August 14, 2018
View Details
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