The number of studies demonstrating a relationship between religiosity and spirituality and physical and psychological health have increased rapidly during the past decade. There are significant disputes in the literature regarding the methodological quality of research in this area. Despite nursing scholars’ interest in this area, no thorough review of the methodological critiques is available. The purpose of this study is to review areas of methodological difficulty in the study of religiosity and spirituality by identifying contemporary methodological critiques, critically evaluating the critiques and the underlying issues, and making suggestions for methodological advancement in the field. Three main areas of methodological critique exist: construct measurement, study design, and data analysis. Research in this area should aim for conceptual clarity, deliberate design, and appropriate analysis. Considerations of these critiques are instructive for nursing research done in the area of religiosity and spirituality.
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