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 Eric Deemer posted on Saturday, April 06, 2013 - 7:44 am
Hello,
I'm doing a bifactor EFA using the ESEM framework and I specified the following rotation method:

ANALYSIS: rotation=bi-geomin (orthogonal);

My understanding is that this reflects an oblique rotation with a Schmid-Leiman orthogonalization. Is this correct?

Thanks,
Eric
 Bengt O. Muthen posted on Saturday, April 06, 2013 - 12:23 pm
No. The orthogonal setting means that the specific (group) factors are uncorrelated. The advantage of bi-factor EFA over Schmid-Leiman is discussed in Section 5 of the Jennrich $ Bentler (2011) article referred to in the Mplus Version 7 UG.
 Eric Deemer posted on Saturday, April 06, 2013 - 1:12 pm
Okay, so the rotation is oblique between general and specific factors, but orthogonal across specific factors only?

Eric
 Bengt O. Muthen posted on Saturday, April 06, 2013 - 1:31 pm
Right. But typically, there is little correlation between the general factor and the specific factors - see the two J & B refs.

And, you can request (oblique) to get the specifics to correlate.
 Eric Deemer posted on Saturday, April 06, 2013 - 1:50 pm
Got it. Thanks so much, Bengt!

Eric
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