Identical Model Fit for EFA and Bi-EF... PreviousNext
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 Mahjabeen R posted on Monday, September 21, 2015 - 11:20 am
Good afternoon,

I ran an EFA and Bifactor and got identical model fit for a two-factor solution (2 factors in EFA, 1 General and 1 Residual factor in Bi-EFA).

Is it possible to have identical fit from two different analyses? The values are perfectly identical. Interestingly, in both cases, the 2-factor (identical) fit is the best.

Your input is much appreciated!

My syntax for EFA:
TITLE:EFA 1-4 factors
DATA: File is XXX.csv;
VARIABLE: NAMES ARE
Itm1-Itm18;
USEVARIABLES ARE
Itm2-Itm15 Itm18;
ANALYSIS: TYPE = EFA 1 4;
OUTPUT: MODINDICES;
plot: type = plot2;

My syntax for Bi-EFA
TITLE: Bi-EFA Using ESEM
DATA: File is XXX.csv;
VARIABLE: NAMES ARE
Itm1-Itm18;
USEVARIABLES ARE
Itm2-Itm15 Itm18;
ANALYSIS: ROTATION = BI-GEOMIN;
MODEL: fg f1 BY Itm2-Itm15 Itm18 (*1);
 Bengt O. Muthen posted on Monday, September 21, 2015 - 2:42 pm
Bi-factor EFA with m-1 specific factors is equivalent to EFA with m factors, that
is, the two types of models have the same fit to data. The two models are reparameterizations of each other, so that the bi-factor EFA represents a special type of rotation.
 Mahjabeen R posted on Friday, September 25, 2015 - 1:20 pm
Thank you!
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