NaN for estimated SE (both unstandardized and standardized)

Thanh Le

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Nov 26, 2024, 5:28:55 PM11/26/24

to Genomic SEM Users

Hello everyone,

I arrived at a model with a good fit with CFI being 0.9879858 and SRMR being 0.04539554.

However, some standard errors for the factor loadings estimates are NaN, as shown in the usermodel() below.

What might be causing this? And how should I interpret the model or modify the model?

Thank you in advance!

Merli Koitmäe

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Dec 9, 2024, 12:14:16 PM12/9/24

to Genomic SEM Users

Hi!

Did you find any solution to the problem? I have the same problem and cannot figure out what's wrong...

Thanks!

Elliot Tucker-Drob

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Dec 9, 2024, 5:20:02 PM12/9/24

to Thanh Le, Genomic SEM Users

It looks like F3 is a higher order factor with two indicators. A two indicator factor is not typically identified unless an additional constraint is imposed (e.g. equality of factor loadings). Sometimes unidentified models will produce estimates and SEs for subsets of parameters, but I would not typically trust those.

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