Mplus Users Guide v6.. - Muthén & Muthén

CHAPTER 5that the three test forms are equivalent with respect to their measurementthresholds, the (1) after the first bracket statement specifies that thethresholds for u1a, u1b, and u1c are constrained to be equal and the (2)after the second bracket statement specifies that the thresholds for u2a,u2b, and u2c are constrained to be equal. The default estimator for thistype of analysis is a robust weighted least squares estimator. TheESTIMATOR option of the ANALYSIS command can be used to selecta different estimator. With maximum likelihood, logistic regressions areestimated using a numerical integration algorithm. Note that numericalintegration becomes increasingly more computationally demanding asthe number of factors and the sample size increase. An explanation ofthe other commands can be found in Examples 5.1 and 5.9.EXAMPLE 5.11: SEM WITH CONTINUOUS FACTORINDICATORSTITLE: this is an example of a SEM withcontinuous factor indicatorsDATA: FILE IS ex5.11.dat;VARIABLE: NAMES ARE y1-y12;MODEL: f1 BY y1-y3;f2 BY y4-y6;f3 BY y7-y9;f4 BY y10-y12;f4 ON f3;f3 ON f1 f2;68