Testing for coefficient differences b... PreviousNext
Mplus Discussion > Structural Equation Modeling >
Message/Author
 Thomas Zerback posted on Tuesday, November 05, 2013 - 9:21 am
Dear Drs Muthen,

I'm running two separate models using the same sample. The models only differ in one latent dependent variable (MK / PR, both have the same metric):

Model 1:

EM by EG01_01 EG01_03G;
EM on F1_ARGUD;
EM on F2_UMFRD;
MK by MK01_01G MK01_03G;
MK on F1_ARGUD;
MK on F2_UMFRD;
MK on EM;

Model 2:

EM by EG01_01 EG01_03G;
EM on F1_ARGUD;
EM on F2_UMFRD;
PR by PR02_01 PR02_02;
PR on F1_ARGUD;
PR on F2_UMFRD;
PR on EM;

I want to test if the differences between the path coefficients are significant, namely:

"MK on F1_ARGUD" compared to "PR on F1_ARGUD"
"MK on F2_UMFRD" compared to "PR on F2_UMFRD"
"MK on EM" compared to "PR on EM"

I already used the "model test" command, but I'm still uncertain if it makes sense in my case:

EM by EG01_01 EG01_03G;
EM on F1_ARGUD;
EM on F2_UMFRD;

MK by MK01_01G MK01_03G;
MK on F1_ARGUD (p1);
MK on F2_UMFRD (p2);
MK on EM (p3);

PR by PR02_01 PR02_02;
PR on F1_ARGUD (p1b);
PR on F2_UMFRD (p2b);
PR on EM (p3b);

model test:
0 = p1 - p1b;
0 = p2 - p2b;
0 = p3 - p3b;


Thanks for your help!
 Bengt O. Muthen posted on Tuesday, November 05, 2013 - 4:03 pm
MK and PR need to have at least metric invariance, that is, the loadings need to be equal. You say the two factors have the same metric but I don't know what you mean by that. If you have different factor indicators it seems hard to argue invariance. But Model Test is right in principle.
Back to top
Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: