Fundamental mediation analysis question
So, I have 3 variables: A, B, C. Which I assign to be X, M, Y:
X = A
M = B
Y = C
Mediation analysis (bootstrapping) suggests an indirect effect: i.e. A (X) determines C (Y) through B (M).
After the above positive result, does then testing it the other way around add any further supporting data to
this positive result? i.e.:
X = C
M = B
Y = A
IF in this opposite direction there is NO indirect effect observed.
So there appears to be some directionality. But I am unsure of the relevance of this. Does it add to the
case for the mediation?