Required sample size to detect the mediated effect

被引：3275

作者：

Fritz, Matthew S. ^{[1
]}

MacKinnon, David P. ^{[1
]}

机构：

[1] Arizona State Univ, Dept Psychol, Tempe, AZ 85287 USA

来源：

PSYCHOLOGICAL SCIENCE | 2007年 / 18卷 / 03期

关键词：

D O I：

10.1111/j.1467-9280.2007.01882.x

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

Mediation models are widely used, and there are many tests of the mediated effect. One of the most common questions that researchers have when planning mediation studies is, "How many subjects do I need to achieve adequate power when testing for mediation?" This article presents the necessary sample sizes for six of the most common and the most recommended tests of mediation for various combinations of parameters, to provide a guide for researchers when designing studies or applying for grants.

引用

页码：233 / 239

页数：7

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