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st: Factor analysis with binary data


From   "Data Analytics Corp." <[email protected]>
To   [email protected]
Subject   st: Factor analysis with binary data
Date   Wed, 02 Mar 2011 12:09:37 -0500

Hi,

I have to do a factor analysis with binary survey data. I have no problem doing the factor analysis per se (I'll develop a correlation matrix using tetrachoric correlations), but I do have a question about the predicted scores. They will be continuous, but I need them for other analysis to be binary. Any suggestions for how I can take the scores for a factor and recode them into 0/1 values. I thought of looking at the distributions and making an arbitrary guess for a cut-off: anything above is 1; below is 0. A first guess for a cut-off would be 0: anything positive is 1; negative is 0. Does anyone have a better suggestion?

Thanks,

Walt

________________________

Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
[email protected]
www.dataanalyticscorp.com
_____________________________________________________

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