Commentary: Mediation and Moderation: An Historical Progress Report

摘要

The purpose of this invited commentary is to reflect on the progress we have made in the use of and in our research since the appearance of my paper on post hoc probing of mediator and moderator effects in pediatric psychology research ( ). As I did in my first paper on this topic ( ), I continue to distinguish between conceptual and statistical clarity when discussing mediation and moderation. Indeed, both types of clarity are critical and both are necessary; it is not sufficient to have one without the other.