Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: Hierarchical CFA problem


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
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 <W.R.Long@leeds.ac.uk> 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
jvverkuilen@gmail.com

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

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index