Internal Validity of Project MATCH Treatments: Discriminability and Integrity

Internal Validity of Project MATCH Treatments Discriminability and Integrity

Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity) is a multisite collaborative project designed to evaluate patient-treatment interactions in alcoholism treatment. To evaluate whether major threats to the internal validity of the independent (treatment) variable in Project MATCH...

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Bibliographic Details
Published in:Journal of consulting and clinical psychology Vol. 66; no. 2; pp. 290 - 303
Main Authors: Carroll, Kathleen M, Connors, Gerard J, Cooney, Ned L, DiClemente, Carlo C, Donovan, Dennis M, Kadden, Ronald R, Longabaugh, Richard L, Rounsaville, Bruce J, Wirtz, Philip W, Zweben, Allen
Format: Journal Article
Language:English
Published: Washington, DC American Psychological Association 01-04-1998
Subjects:
Adult
Aftercare - psychology
Aged
Alcohol abuse
Alcohol Treatment
Alcoholics Anonymous
Alcoholism
Alcoholism - psychology
Alcoholism - rehabilitation
Ambulatory Care - psychology
Behavior Therapy
Behavior therapy. Cognitive therapy
Biological and medical sciences
Client Treatment Matching
Cognitive Behavioral Therapy
Cognitive Therapy
Female
Human
Humans
Internal Validity
Male
Medical sciences
Middle Aged
Motivation
Outcome and Process Assessment (Health Care)
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Self-Help Groups
Substance abuse treatment
Treatment Effectiveness Evaluation
Treatment methods
Treatments
Twelve Step Programs
Human
Validity
Cognitive therapy
Poison withdrawal
Motivation
Alcoholism
Treatment efficiency
Psychotherapy
Behavior therapy
Therapeutic schedule
Comparative study
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Summary:Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity) is a multisite collaborative project designed to evaluate patient-treatment interactions in alcoholism treatment. To evaluate whether major threats to the internal validity of the independent (treatment) variable in Project MATCH could be ruled out, we investigated several aspects of treatment integrity and discriminability. In this study, 1,726 alcohol-dependent participants at 10 sites were randomized to 3 treatments: cognitive-behavioral treatment (CBT), motivational enhancement therapy (MET), and 12-step facilitation (TSF). Participants received treatment either as outpatients or as aftercare following a more intensive inpatient or day hospital treatment. For both the outpatient and aftercare arms of the study, treatments were discriminable in that therapists implemented each of the treatments according to manual guidelines and rarely used techniques associated with comparison approaches. Participants received a high level of exposure to their study treatments, and the intended contrast in treatment dose between MET and the 2 more intensive treatments (CBT and TSF) was obtained. Alcoholics Anonymous involvement was significantly higher for participants assigned to TSF versus MET or CBT, whereas the treatments did not differ in utilization of other nonstudy treatments. Nonspecific aspects of treatment such as therapist skillfulness and level of the therapeutic alliance were comparable across treatment conditions.
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ISSN:0022-006X
1939-2117
DOI:10.1037/0022-006X.66.2.290