Experimental Tests of Mediation Models
讨论了实验设计中检验中介模型的方法、操纵中介变量可能遇到的问题、分布问题、统计方法以及直接与间接效应的检验策略，适合关注因果推断的研究者参考。
Experimental tests of assumed mediation models have been recommended by numerous methodologists. However, they may prove problematic for a number of reasons. Thus, this article considers (a) experimental designs that can be used in tests of mediation, (b) problems that may arise in manipulating mediator variables, (c) distributional issues in experimental tests of mediation, (d) statistical approaches for testing mediation models, including strategies for testing for direct versus indirect effects in experimental tests of mediation models, and (e) a set of conclusions stemming from our analysis.