Bayesian Mediation Analysis

Ying Yuan, David Mackinnon

Research output: Contribution to journalArticlepeer-review

419 Scopus citations


In this article, we propose Bayesian analysis of mediation effects. Compared with conventional frequentist mediation analysis, the Bayesian approach has several advantages. First, it allows researchers to incorporate prior information into the mediation analysis, thus potentially improving the efficiency of estimates. Second, under the Bayesian mediation analysis, inference is straightforward and exact, which makes it appealing for studies with small samples. Third, the Bayesian approach is conceptually simpler for multilevel mediation analysis. Simulation studies and analysis of 2 data sets are used to illustrate the proposed methods.

Original languageEnglish (US)
Pages (from-to)301-322
Number of pages22
JournalPsychological Methods
Issue number4
StatePublished - Dec 2009


  • Bayesian inference
  • credible interval
  • multilevel mediation
  • single-level mediation

ASJC Scopus subject areas

  • Psychology (miscellaneous)


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