Designs for Studying Mediation
2015
Once we find a cause-effect relationship, the next question is related to the mechanisms of change. Mediators play a prominent role in establishing these mechanisms because they are variables that intervene between the cause (i.e., predictor/independent variable) and its effect (i.e., outcome/criterion/dependent variable). A wide range of designs can focus on mediators. These include both nonexperimental designs (i.e., cross-sectional or longitudinal) and experimental designs. Experimental designs are more appropriate designs for studying mediation but no single study can meet all prescriptive requirements for considering a specific mediator as a causal mechanism. A strong recommendation is that any endeavor to establish mediation should be complemented by a conceptual analysis through the lens of a well-supported and/or well-specified theory.
Keywords:
experimental psychology;
mental health;
mediation;
methodology;
moderation;
research;
theory/mechanism of change
Keywords:
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