[R] Bifactor model and infit statistics?

Bert Gunter bgunter@4567 @end|ng |rom gm@||@com
Thu Apr 11 23:53:41 CEST 2019

This is essentially a statistics question, which are generally off topic
here. This list is about the R programming language. Try
stats.stackexchange.com instead for your question. To see what R offers
once you've decided what to do, see: https://cran.r-project.org/web/views/
  as well as searching at rseek.org  .

Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Thu, Apr 11, 2019 at 2:23 PM kende jan via R-help <r-help using r-project.org>

> Goodafternoon,
> I amcurrently in the process of calibrating an item bank using a GPCM
> model. So, amI right to assume that the bifactor model allows me to work
> with my generalfactor by assimilating it to a one-factor model, without
> taking into account groupfactors? That is, I can estimate my item
> parameters from my factor loadings onthe general factor only?
> If so, Ihave some questions about evaluating the fit of my model. The
> calculation of infitstatistics is specific to unidimensional models. Can I
> compute infit statisticsusing the general factor or do I have to do this
> separately for each of the groupfactors? Or is there a more appropriate
> method to evaluate the fit of my modelwhen calibration an item bank using a
> GPCM model?
> Thank youin advance.
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