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Kelcey, Ben – Society for Research on Educational Effectiveness, 2015
Like studies focused on the detection of a main or total effect, a principal consideration in the design of studies examining mediation is the power with which mediation effects can be detected if they exist (e.g., Raudenbush, 1997). However, unlike studies concerning the detection of main effects, literature has not established power formulas for…
Descriptors: Hierarchical Linear Modeling, Statistical Analysis, Effect Size, Mathematical Formulas