Scale development of a measure to assess community-based and clinical intervention group environments.

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Bibliographic Details
Title:	Scale development of a measure to assess community-based and clinical intervention group environments.
Authors:	Wilson, Patrick A., Hansen, Nathan B., Tarakeshwar, Nalini, Neufeld, Sharon, Kochman, Arlene, Sikkema, Kathleen J.
Source:	Journal of Community Psychology. Apr2008, Vol. 36 Issue 3, p271-288. 18p. 4 Charts, 1 Graph.
Subjects:	Group Environment Scale, Psychometrics, Clinical trials, Community organization, Medical experimentation on humans
Abstract:	Though group interventions are widely used in community-based and clinical settings, there are few brief instruments for assessing the group environment. Two studies on the development of a brief measure to assess intervention group environments are described, and psychometric properties of the new scale are presented. The new measure is based on Moos' (1994) Group Environment Scale (GES). Participants in the studies were from two independent randomized controlled clinical trials (RCTs) of group interventions (combined N=334). In Study 1 (N=139), the factor content of the original 90-item GES was examined. The scale was shortened, the response format was changed, and items were adapted and added to in an effort to increase applicability to community-based and clinical intervention groups. In Study 2 (N=195), the new scale was evaluated, the factor solution obtained in Study 1 was cross-validated, and subsequently the length of the scale was shortened again. The final scale contains 25 items with three subscales. Reliability and validity of the new scale was examined. Finally, the research and practice implications of the scale are discussed. © 2008 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

Description
Abstract:	Though group interventions are widely used in community-based and clinical settings, there are few brief instruments for assessing the group environment. Two studies on the development of a brief measure to assess intervention group environments are described, and psychometric properties of the new scale are presented. The new measure is based on Moos' (1994) Group Environment Scale (GES). Participants in the studies were from two independent randomized controlled clinical trials (RCTs) of group interventions (combined N=334). In Study 1 (N=139), the factor content of the original 90-item GES was examined. The scale was shortened, the response format was changed, and items were adapted and added to in an effort to increase applicability to community-based and clinical intervention groups. In Study 2 (N=195), the new scale was evaluated, the factor solution obtained in Study 1 was cross-validated, and subsequently the length of the scale was shortened again. The final scale contains 25 items with three subscales. Reliability and validity of the new scale was examined. Finally, the research and practice implications of the scale are discussed. © 2008 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]
ISSN:	00904392
DOI:	10.1002/jcop.20193