Commentary: Causal Effects in Mediation Modeling: An Introduction with Applications to Latent Variables.

The article focuses on the effects of causal mediation analysis technique and presents a graphical representation of potential outcomes by using VanderWeele's mediation decomposition approach. Topics discussed include use of potential outcomes (PO) values to observe causal total effects, effectiveness of PO in providing understanding and reporting of causal mediation, and use of notational bridge and cross-pollination of software syntaxes.