

Specify measurement error for dichtot... 

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Anonymous posted on Tuesday, January 11, 2005  4:31 am



I performed an analysis with a dichotomous dependent variable (like in example cat5) and latent independent variables. My dependent variable is an observed variable. However, I do want to include the measurement error in that variable in the model. I assume that the error variance of that variable is about 20 percent of the total variance of that variable. I try to put this in the model by treating the dependent variable as a latent variable with one indicator and to fix the residual variance of that indicator to one fifth of its total variance. However, this does not seem to work. Is there a way to specify the size of the measurement error of a dichotomous dependent variable with one indicator? 


No. A categorical dependent variable has no free variance parameter associated with it. Putting a latent variable behind it does not allow a variance parameter to be identified. 

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