Issues in the Development of Reliable Measures in Addictions Research: Introduction to Project MATCH Assessment Strategies

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This article provides an introduction to the 5 instrument articles in this special section, each of which presents a psychometric evaluation of a self-administered questionnaire developed for use in addictions treatment research. An overview of measurement theory is presented, and social–psychological factors that affect reliability and validity are considered. The instruments evaluated in this issue are summarized, and the 2 common data sources for the 5 reports, the Project MATCH baseline data set and the Project MATCH Reliability Study, are described. The article concludes with a brief summary that offers recommendations regarding how psychometric investigations should be undertaken and applied to the development of self-report questionnaires in addictions research.

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