MEDIATOR & MODERATOR EFFECTS

Applied Statistics

There are several goals of the article "Testing Moderator and Mediator Effects in Counseling Psychology Research." (Frazier et al., 2004) One of the primary goals of the piece is clear delineation of each term and clear explanation of the differences (and similarities) between the two. Another goal of the authors' research is to reveal to researchers and professionals the potential depth and precision their research could achieve with knowledge and application of mediators and moderators in their studies. With awareness and tracking of mediators and moderators, researchers can make more precise predictions, compile richer data, and provide more insightful analyses & conclusions after the study.

Interaction effects are not only important for intervention studies, however. There are many other instances in which researchers are interested in whether relations between predictor and outcome variables are stronger for some people than for others. The identification of...
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