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Re: st: Hierarchical CFA problem

From   "JVerkuilen (Gmail)" <>
Subject   Re: st: Hierarchical CFA problem
Date   Mon, 22 Apr 2013 08:32:04 -0500

On Mon, Apr 22, 2013 at 4:31 AM, W Robert Long <> wrote:

The key is in the lavaan output:

>     L1                0.192    0.170
>     L2                0.709    0.107
>     L3                0.272    0.069
>     G                 0.617    0.183

Notice how small the variance of L1 is, and how large its SE is. This
is indicative of a log-likelihood that is close to being irregular, in
this case probably having a mode at or close to 0 for L1's variance.
L3 has a slightly higher variance but a markedly lower standard error,
which means it has a proper peak. While you shouldn't use these
standard errors to compute hypothesis tests or confidence intervals,
they are highly indicative of problems with a model. So I'm not
surprised difficult cleaned things up.

(lavaan is a nice piece of kit, by the way.)

JVVerkuilen, PhD

“He uses statistics as a drunken man uses lamp-posts – for support
rather than illumination.”--Andrew Lang

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