Dear Friends
Moderated Mediation is a special case of Mediation when any of the 3 paths is moderated by the 4th variable.
Here the presence of a moderator may have an effect on the mediation too.
Since Multicollinearity plays its role, the following possibilities are there in these 3 Moderated Mediation models:
Considering all 3 relations X->Y, X->M, and M->Y are significant and it is a case of Partial Mediation, the addition of M as moderator to X->Y may make the relation of X->Y insignificant thus leading to Full Mediation.
Likewise, in Model-7 and Model-14, Considering all 3 relations X->Y, X->M, and M->Y are significant and it is a case of Partial Mediation, the addition of M as moderator to X->M (Model-7) may make the relation of X->M as insignificant thus leading to No Mediation. Similarly, if M->Y is insignificant because of the addition of moderator M (Model-14) then again its a case of No Mediation.
I've explained this concept in detail in the following video:
Happy Learning
Neeraj