MC sample size simulation with catego... PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
 Gina Marie Johnson posted on Tuesday, November 09, 2010 - 9:55 am
I am preparing to complete a Monte Carlo simulation to ascertain the sample size needed to complete a CFA of survey data. I have read both the Muthen and Muthen, 2002 paper and the section in Brown's 2006 CFA book, so have a fairly good grasp of the syntax needed to complete the simulation.

My question is how do I indicate in the syntax that my simulated data should be categorical and range in value from 1 to 4? I see where the parameter estimation method is noted: (ANALYSIS: ESTIMATOR = ML in the case of the Brown syntax, which I will change to WLSMV for my simulation). But what syntax should I use to indicate categorical data?

Thank you for your assistance.
 Linda K. Muthen posted on Tuesday, November 09, 2010 - 10:06 am
The GENERATE option of the MONTECARLO command is used to specify this. See the user's guide for further information.
 Gina Marie Johnson posted on Tuesday, November 09, 2010 - 11:46 am
Thank you. If I understand the User's Guide correctly, for categorical data with 4 options for each variable, my syntax would be (I have 11 variables):

GENERATE = q1-q3 (3 p) q5-q10 (3 p) q12 (3 p) q14 (3 p);
 Linda K. Muthen posted on Tuesday, November 09, 2010 - 12:20 pm
This looks correct.
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