|Date: ||Mon, 13 Jan 1997 16:34:54 +0000|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>|
|From: ||nick nelson <n.w.nelson@EDUCATION.LEEDS.AC.UK>|
|Organization: ||Leeds University|
|Subject: ||Re: Correlations|
|Content-Type: ||text/plain; charset=us-ascii|
Nichols, David wrote:
> 4) Tetrachoric correlations are special cases of polychoric
> correlations. No
> SPSS procedure directly calculates them, though PRELIS does (as a
> case of polychoric correlations).
I am also interested in computing tetrachoric correlations as a
to factor analysing the matrix to determine the dimensionality of test
Where can I find documentation for PRELIS? the help system will show
me the syntax, but I feel I need more than that.