Multiple Group CFA with binary data PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
Message/Author
 Ryan Hong posted on Thursday, September 15, 2016 - 1:25 am
Hello,

I am trying to conduct a multiple group CFA (groups = S & P) with 10 binary items loading on 3 factors. I started with the configural model here.

*****
USEVARIABLES ARE m1-m10;
GROUPING IS Group (0=S 1=P);
CATEGORICAL ARE m1-m10;
Parameterization = theta;
MODEL:
affect BY
m4@1 (L4)
m5* (L5);
impul BY
m1@1 (L1)
m2* (L2)
m3* (L3)
m6* (L6)
m10* (L10);
self BY
m7@1 (L7)
m8* (L8)
m9* (L9);
[m1$1*] (I1); [m2$1*] (I2); ... [m10$1*] (I10);
affect* impul* self*;
affect WITH impul*;
affect WITH self*;
impul WITH self*;

MODEL S:

In Model S, the commands are repeated but without labels.

I got an error message:
THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES COULD NOT BE
COMPUTED. THE MODEL MAY NOT BE IDENTIFIED. CHECK YOUR MODEL.
PROBLEM INVOLVING THE FOLLOWING PARAMETER:
Parameter 42, Group P: M2

The parameter is the theta for m2.

Is there anything I can do to resolve this?

Thank you!
 Bengt O. Muthen posted on Thursday, September 15, 2016 - 10:29 am
Please send the full output and your license number to Support.
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