Model Test PreviousNext
Mplus Discussion > Structural Equation Modeling >
Message/Author
 S.Arunachalam posted on Thursday, June 28, 2012 - 11:03 am
Hello Prof. Muthen

A clarification on usage of Model Test in multi-group analysis.I have two groups, and trying to check if the regression parameter with label a is equal to parameter b.

When I ran the code
Model test:
a = b
wald-chi sq test is non-significant
Wald Test of Parameter Constraints
Value 0.981
Degrees of Freedom 1
P-Value 0.3219

However if use
Model test:
a - b = 0

the results are
Wald Test of Parameter Constraints
Value 7.280
Degrees of Freedom 1
P-Value 0.0070

I thought in both ways am testing the same difference in parameter test. Please help
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: