Social cognitive predictors of treatment outcome in cannabis dependence.

Autor: Gullo MJ; Centre for Youth Substance Abuse Research, The University of Queensland, Brisbane, QLD 4029, Australia; Alcohol and Drug Assessment Unit, Division of Medicine, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia; School of Psychology, The University of Queensland, Brisbane, QLD 4072, Australia. Electronic address: m.gullo@uq.edu.au., Matveeva M; Centre for Youth Substance Abuse Research, The University of Queensland, Brisbane, QLD 4029, Australia; School of Psychology, The University of Queensland, Brisbane, QLD 4072, Australia., Feeney GF; Centre for Youth Substance Abuse Research, The University of Queensland, Brisbane, QLD 4029, Australia; Alcohol and Drug Assessment Unit, Division of Medicine, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia., Young RM; Alcohol and Drug Assessment Unit, Division of Medicine, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia; Faculty of Health, Queensland University of Technology, Brisbane QLD 4059, Australia; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane QLD 4059, Australia., Connor JP; Centre for Youth Substance Abuse Research, The University of Queensland, Brisbane, QLD 4029, Australia; Alcohol and Drug Assessment Unit, Division of Medicine, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia; School of Medicine, The University of Queensland, Brisbane, QLD 4029, Australia.
Jazyk: angličtina
Zdroj: Drug and alcohol dependence [Drug Alcohol Depend] 2017 Jan 01; Vol. 170, pp. 74-81. Date of Electronic Publication: 2016 Nov 04.
DOI: 10.1016/j.drugalcdep.2016.10.030
Abstrakt: Background: Drug-related outcomes expectancies and refusal self-efficacy are core components of Social Cognitive Theory. Both predict treatment outcome in alcohol use disorders. Few studies have reported expectancies and refusal self-efficacy in cannabis dependence. None have examined both, although both constructs are key targets in Cognitive-Behavioural Therapy (CBT). This study tests the predictive role of expectancies and refusal self-efficacy in treatment outcome for cannabis dependence.
Design: Outpatients completed a comprehensive assessment when commencing cannabis treatment and predictors of treatment outcome were tested.
Setting: A university hospital alcohol and drug outpatient clinic.
Participants: 221 cannabis-dependent patients participated in a 6-week CBT program where the goal was abstinence.
Measurements: Cannabis Expectancy Questionnaire and Cannabis Refusal Self-Efficacy Questionnaire, cannabis dependence severity [Severity of Dependence Scale], psychological distress [General Health Questionnaire] at baseline; the timeline follow-back procedure at baseline and each session.
Findings: Patients reporting lower confidence in their ability to resist cannabis during high negative affect (emotional relief refusal self-efficacy) had a lower likelihood of abstinence (p=0.004), more days of use (p<0.001), and larger amount used (p<0.001). Negative cannabis expectancies predicted greater likelihood of abstinence (p=0.024). Higher positive expectancies were associated with lower emotional relief self-efficacy, mediating its association with outcome (p<0.001).
Conclusions: Emotional relief refusal self-efficacy and negative expectancies are predictive of better treatment outcomes for cannabis dependence. Positive expectancies may indirectly predict poorer outcome because of a negative association with self-efficacy, but this conclusion remains tentative as directionality could not be established.
(Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.)
Databáze: MEDLINE
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