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Is the indirect effect of the a-path significant?
The significant indirect effect is the a-path multiplied by the b-path. So regardless of whether one of the individual paths is insignificant, the indirect effect can be significant. “Introduction to Mediation, Moderation, and Conditional Process Analysis : A Regression-Based Approach” by Andrew F. Hayes.
When to trim a model for path analysis?
In some cases, the model should not be trimmed if either the goal is to compare the paths from one model to another or if the goal is determine the absolute size of the paths. Types of Tests a) test of the individual paths: standard tor Ftest of the coefficient F b) test of all of the paths in a given equation
What do you need to know about path analysis?
Path Analysis 1 Overview. Path analysis, a precursor to and subset of structural equation modeling, is a method to discern and assess the effects of a set of variables acting on a specified 2 Description. 3 Readings. 4 Software. 5 Courses.
What happens if path A and B are not significant?
However, I bumped into a situation where Path a and Path b are strongly significant, but not Path C. Compared to Path c, Path c’ is not significant, but the coefficient is decreased. In this case, is it still valuable to talk about the relationship among X, Y, and M??
Can you have mediation if either the a-or B-path are not?
Just wanted to update the community: YES you can have a significant indirect effect (aka: mediation) if only one of the paths (a or b) are significant. The significant indirect effect is the a-path multiplied by the b-path. So regardless of whether one of the individual paths is insignificant, the indirect effect can be significant.
What happens if you sum paths a and C?
Summing these two indirect effects would give you a total effect ( c) of zero, and yet, if you adopted the causal steps approach, you would not only miss one “real” mediation, but two.