AUTHOR=Coman Emil N. , Thoemmes Felix , Fifield Judith TITLE=Commentary: Causal Effects in Mediation Modeling: An Introduction with Applications to Latent Variables JOURNAL=Frontiers in Psychology VOLUME=8 YEAR=2017 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2017.00151 DOI=10.3389/fpsyg.2017.00151 ISSN=1664-1078