期刊
SOCIAL PSYCHOLOGICAL AND PERSONALITY SCIENCE
卷 8, 期 4, 页码 379-386出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/1948550617715068
关键词
power; mediation; sample size; R
Mediation analyses abound in social and personality psychology. Current recommendations for assessing power and sample size in mediation models include using a Monte Carlo power analysis simulation and testing the indirect effect with a bootstrapped confidence interval. Unfortunately, these methods have rarely been adopted by researchers due to limited software options and the computational time needed. We propose a new method and convenient tools for determining sample size and power in mediation models. We demonstrate our new method through an easy-to-use application that implements the method. These developments will allow researchers to quickly and easily determine power and sample size for simple and complex mediation models.
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