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Although previous research has studied power in mediation models, the extent to which the inclusion of a mediator will increase power has not been investigated. To address this deficit, in

Although previous research has studied power in mediation models, the extent to which the inclusion of a mediator will increase power has not been investigated. To address this deficit, in a first study we compared the analytical power values of the mediated effect and the total effect in a single-mediator model, to identify the situations in which the inclusion of one mediator increased statistical power.

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Date Created
  • 2015-06-01
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  • Text
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    Identifier
    • Digital object identifier: 10.3758/s13428-014-0481-z
    • Identifier Type
      International standard serial number
      Identifier Value
      1554-351X
    • Identifier Type
      International standard serial number
      Identifier Value
      1554-3528
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    O'Rourke, Holly P., & MacKinnon, David P. (2015). When the test of mediation is more powerful than the test of the total effect. BEHAVIOR RESEARCH METHODS, 47(2), 424-442. http://dx.doi.org/10.3758/s13428-014-0481-z

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