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Re: st: Hierarchical CFA problem
From
Alan Acock <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Hierarchical CFA problem
Date
Mon, 22 Apr 2013 10:31:39 -0700
You could fix the error term at zero to get a solution but the solution might not be good
Alan Acock
Sent from my iPhone
On Apr 22, 2013, at 6:32 AM, "JVerkuilen (Gmail)" <[email protected]> wrote:
> On Mon, Apr 22, 2013 at 4:31 AM, W Robert Long <[email protected]> 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
> [email protected]
>
> “He uses statistics as a drunken man uses lamp-posts – for support
> rather than illumination.”--Andrew Lang
>
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