Including a covariate can increase power to detect an effect between two variables. Although previous research has studied power in mediation models, the extent to which the inclusion of a mediator will increase the power to detect a relation between two variables has not been investigated. The first study identified situations where empirical and analytical power of two tests of significance for a single mediator model was greater than power of a bivariate significance test.
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- Partial requirement for: M.A., Arizona State University, 2013Note typethesis
- Includes bibliographical references (p. 50-53)Note typebibliography
- Field of study: Psychology