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Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

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CHAPTER 17Type of Parameter Distributions Available Default PriorsObserved continuousnormalnormal (0, infinity)dependent variablemeans/intercepts (nu)Observed continuousinverse Gamma inverse Gamma (-1, 0)dependent variablevariances/residualvariances (theta)Observed categoricalnormalnormal (0, infinity)dependent variablethresholds (tau)uniformFactor loadings (lambda) normal normal (0, infinity)Regression coefficients (beta) normal normal (0, infinity)Continuous latent variable normalnormal (0, infinity)means/intercepts (alpha)Continuous latent variablevariances/residual variances(psi)One latent variableinverse GammaGammauniformlognormalnormalinverse Gamma (-1, 0)Categorical latent variableparameters (varies)More than one latent variableinverse Wishartinverse Wishart (0, -p-1)Dirichlet Dirichlet (10, 10)For the normal distribution default, infinity is ten to the power of ten.For the inverse Gamma default, the settings imply a uniform priorranging from minus infinity to plus infinity. For the inverse Wishartdefault, p is the dimension of the multivariate block of latent variables.For the Dirichlet default, the first number gives the number ofobservations to add to the class referred to and the second number givesthe number of observations to add to the last class. For a discussion ofpriors, see Gelman et al. (2004), Browne and Draper (2006), and Gelman(2006).LABELLING PARAMETERS IN THE ANALYSISMODELParameters in the analysis model are given labels by placing a name inparentheses after the parameter in the MODEL command. Only onelabel can appear on each line of the input file. Following is an exampleof how to use the MODEL command to assign labels to parameters.620

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