Bryon Adinoff1,2, Thomas J Carmody2, Robrina Walker2, Dennis M Donovan3,4, Gregory S Brigham5,6, Theresa M Winhusen5. 1. a VA North Texas Health Care System, Dallas VAMC , Dallas , TX , USA. 2. b Department of Psychiatry , University of Texas Southwestern Medical Center , Dallas , TX , USA. 3. c Alcohol & Drug Abuse Institute, University of Washington , Seattle , WA , USA. 4. d Department of Psychiatry & Behavioral Sciences , University of Washington , Seattle , WA , USA. 5. e Addiction Sciences Division, Department of Psychiatry and Behavioral Neuroscience , University of Cincinnati College of Medicine , Cincinnati , OH , USA. 6. f Maryhaven , Columbus , OH , USA.
Abstract
BACKGROUND: Decision-making processes have been posited to affect treatment outcome in addicted patients. OBJECTIVE: The present multi-site study assessed whether two measures of decision-making predicted relapse and subsequent use in stimulant-dependent patients. METHODS: A total of 160 methamphetamine- or cocaine-dependent patients participating in a multi-site clinical trial evaluating a modified 12-step facilitation intervention for stimulant-dependent patients (STAGE-12) were assessed. Decision-making processes of risk and delay (Iowa Gambling Task [IGT]) and response reversal (Wisconsin Card Sorting Task [WCST]) were obtained shortly after treatment admission followed by assessment of stimulant use over the next six months. The relationships of the IGT and WCST (Perseverative Errors) with relapse (yes/no) and days of stimulant use during the 6-month period following post-randomization were evaluated. RESULTS: Performance on the IGT and WCST did not significantly predict relapse status or time to relapse. Unexpectedly, worse performance on the IGT was associated with a fewer number of stimulant use days (p = 0.001). In contrast, worse performance on the WCST (more perseverative errors) was associated with a greater number of stimulant use days (p = 0.0003). The predictive effects of perseverative errors on subsequent use were confined to methamphetamine-dependent and Minority participants. CONCLUSIONS: Decision-making processes, as measured in the current study, do not uniformly predict relapse or subsequent use. A decrease in the salience attribution of non-drug reinforcers may explain the positive relationship between IGT performance and post-relapse use. More comprehensive and global measures of impulsiveness may better assess relapse risk and use.
BACKGROUND: Decision-making processes have been posited to affect treatment outcome in addictedpatients. OBJECTIVE: The present multi-site study assessed whether two measures of decision-making predicted relapse and subsequent use in stimulant-dependent patients. METHODS: A total of 160 methamphetamine- or cocaine-dependent patients participating in a multi-site clinical trial evaluating a modified 12-step facilitation intervention for stimulant-dependent patients (STAGE-12) were assessed. Decision-making processes of risk and delay (Iowa Gambling Task [IGT]) and response reversal (Wisconsin Card Sorting Task [WCST]) were obtained shortly after treatment admission followed by assessment of stimulant use over the next six months. The relationships of the IGT and WCST (Perseverative Errors) with relapse (yes/no) and days of stimulant use during the 6-month period following post-randomization were evaluated. RESULTS: Performance on the IGT and WCST did not significantly predict relapse status or time to relapse. Unexpectedly, worse performance on the IGT was associated with a fewer number of stimulant use days (p = 0.001). In contrast, worse performance on the WCST (more perseverative errors) was associated with a greater number of stimulant use days (p = 0.0003). The predictive effects of perseverative errors on subsequent use were confined to methamphetamine-dependent and Minority participants. CONCLUSIONS: Decision-making processes, as measured in the current study, do not uniformly predict relapse or subsequent use. A decrease in the salience attribution of non-drug reinforcers may explain the positive relationship between IGT performance and post-relapse use. More comprehensive and global measures of impulsiveness may better assess relapse risk and use.
Entities:
Keywords:
Impulsivity; cocaine use disorder; decision-making; gambling task; methamphetamine use disorder; relapse
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