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Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

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CHAPTER 18model with one less class than the estimated model. The Lo-Mendell-Rubin approach has been criticized (Jeffries, 2003) although it is unclearto which extent the critique affects its use in practice. The p-valueobtained represents the probability that the data have been generated bythe model with one less class. A low p-value indicates that the modelwith one less class is rejected in favor of the estimated model. Anadjustment to the test according to Lo-Mendell-Rubin is also given. Themodel with one less class is obtained by deleting the first class in theestimated model. Because of this, it is recommended when usingstarting values that they be chosen so that the last class is the largestclass. In addition, it is recommended that model identifying restrictionsnot be included in the first class. TECH11 is available only forESTIMATOR=MLR. The TECH11 option is not available for theMODEL CONSTRAINT command, the BOOTSTRAP option of theANALYSIS command, training data, and for models with more than onecategorical latent variable.TECH12The TECH12 option is used in conjunction with TYPE=MIXTURE torequest residuals for observed versus model estimated means, variances,covariances, univariate skewness, and univariate kurtosis. The observedvalues come from the total sample. The estimated values are computedas a mixture across the latent classes. The TECH12 option is notavailable for TYPE=RANDOM, the MONTECARLO command, theCONSTRAINT option of the VARIABLE command, and when there areno continuous dependent variables.TECH13The TECH13 option is used in conjunction with TYPE=MIXTURE torequest two-sided tests of model fit for univariate, bivariate, andmultivariate skew and kurtosis (Mardia’s measure of multivariatekurtosis). Observed sample values are compared to model estimatedvalues generated over 200 replications. Each p-value obtainedrepresents the probability that the estimated model has generated thedata. A high p-value indicates that the estimated model fits the data.TECH13 is available only when the LISTWISE option of the DATAcommand is set to ON. TECH13 is not available forTYPE=TWOLEVEL MIXTURE, ALGORITHM=INTEGRATION, theBOOTSTRAP option of the ANALYSIS command, the CONSTRAINT658

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