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Re: st: SEM becomes unidentified when introducing single item control variables


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: SEM becomes unidentified when introducing single item control variables
Date   Tue, 15 Jan 2013 09:37:13 -0500

The standard errors being crazy is a sign that the model is not
identified. I'd suspect it's because the latent variables for these
controls aren't identified, and given that it doesn't sound like you
have a measurement model for them I'm not sure how they could be. Why
are they latent anyway?
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