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 Isabelle Dinslaken posted on Monday, October 19, 2015 - 1:18 am
Dear Dr. Muthen,
Iím analysing my data with structural equation modelling with Mplus for the first time and I have some general questions:
Is it allowed to expect a mediation between two parallel observed mediators?
Is it right to make a root transformation if I have a quadratic relationship between my mediator and my dependent variable (both observed variables)? And is it always necessary to make a transformation with my data if one of the preconditions isnít fulfilled?
How do I know about the model fit if my dependent variable is categorical? Because than I wonít get a chi-square. Is it allowed to look at the model fit without specifying that the dependent variable is categorical to look at the chi-square and only specify that the dependent variable ist categorical in a further step of analysis to look at the model results?
Thanks a lot for your help.
Iím looking forward to hearing from you.
Yours sincerely,
 Linda K. Muthen posted on Monday, October 19, 2015 - 10:04 am
Yes, parallel mediators are allowed.

Yes, you can do a trasnforamtion.

Absolute fit statistics are not available with categorical outcomes and maximum likelihood estimation. They are for weighted least squares. Use the default WLSMV estimator if you want fit statistics.
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