Addressing Self-Selection Effects in Evaluations of Mutual Help Groups and Professional Mental Health Services: An Introduction to Two-Stage Sample Selection Models.

Humphreys, Keith; And Others

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Peer reviewed

ERIC Number: EJ540324

Record Type: Journal

Publication Date: 1996

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0149-7189

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Addressing Self-Selection Effects in Evaluations of Mutual Help Groups and Professional Mental Health Services: An Introduction to Two-Stage Sample Selection Models.

Humphreys, Keith; And Others

Evaluation and Program Planning, v19 n4 p301-08 Nov 1996

The self-selection problem in program evaluation is explored, and two ways of addressing it, covariate control approaches and two-stage sample selection models, are described. A longitudinal study of the effects of participation in Alcoholics Anonymous illustrates both approaches and shows the advantages of the two-step procedure. (SLD)

Descriptors: Evaluation Methods, Longitudinal Studies, Mental Health Programs, Program Evaluation, Research Design, Research Methodology, Sampling, Selection

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

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Author Affiliations: N/A