Moderator and mediator in Structural Equation Modeling
Montree Piriyakul ^*
Department of Statistic, Faculty of Science, Ramkhamhaeng University.

Abstract

Mediator is a third variable added to modify causal effect of some specific paths by changing strength of path coefficients or their sign on who and/or when context. Moderation and mediation can be combined concurrently, under specific research questions, as moderated mediation model or mediated moderation model. Researches that follow moderation context lead to correct findings, not spurious. Moderators are generally innate (i.e. sex, race) and relatively stable (i.e. trait, personality or disposition) and, is often sought after, when a hypothesize relationship is weak or not found empirically.