Multilevel moderated mediation with f... PreviousNext
Mplus Discussion > Multilevel Data/Complex Sample >
 w posted on Monday, November 13, 2017 - 7:20 pm
I'd like to test a 1-1-1 mediation model (x-m-y) with a Level 2 moderator (w) for the m-y path. From what I've read, this should be modeled using a random slope in the WITHIN model for the m-y path, and regressing it on the moderator in the BETWEEN model. But is there a way to do this if I just want fixed and not random slopes? This is what I'm thinking, but I'm not sure if it is correct?

M on CONT; !CONT is a control variable
M on X (a1w);
Y on M (b1w);
Y on X;

Y on CONT;
Y on X;
Y on M;
Y on W;
Y on INT (b3b);
M on X;
X with W INT;
M with W;

MODEL CONSTRAINT:!“ind”refer to
!indh/indl = indirect effects when w is high/low
NEW(a1 b1 b3 indh indl);
a1 = a1w;
b1 = b1w;
b3 = b3b;
indh = a1*(b1 + b3*(1));
indl = a1*(b1 + b3*(0));
 Bengt O. Muthen posted on Wednesday, November 15, 2017 - 10:36 am
Try using a random slope with s@0; on Between.
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