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J Consult Clin Psychol. 2013 Oct;81(5):926-31. doi: 10.1037/a0032499. Epub 2013 Apr 1.

Contingency management treatments decrease psychiatric symptoms.

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1
Department of Medicine.

Abstract

OBJECTIVE:

Contingency management (CM) is an empirically validated treatment for substance use disorders, but its effects on psychiatric symptoms have not been systematically examined. The purpose of this study was to examine the impact of CM on psychiatric symptoms of cocaine dependent patients receiving CM with standard care versus standard care alone.

METHOD:

Psychiatric symptoms were evaluated in 393 patients participating in 1 of 3 randomized trials of CM at treatment initiation and 1, 3 (posttreatment), 6, and 9 months later.

RESULTS:

Patients randomized to CM evidenced significant reductions in psychiatric symptoms over time throughout the 9-month follow-up. In contrast, psychiatric symptoms remained stable relative to baseline in patients randomized to standard care. A significant time by treatment condition effect was noted (p < .05) for overall psychiatric distress as well as for specific indices of depression, hostility, interpersonal sensitivity, phobic anxiety and psychoticism symptoms. Reductions in drug use mediated the effects of CM on psychiatric symptoms.

CONCLUSIONS:

These data demonstrate that the effects of CM extend beyond their impact on drug use behaviors and the period in which reinforcers are in effect.

PMID:
23544678
PMCID:
PMC3880674
DOI:
10.1037/a0032499
[Indexed for MEDLINE]
Free PMC Article
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