[R] Factor analysis with dichotomous variables

Chris Lawrence lordsutch at gmail.com
Sat Dec 18 05:07:54 CET 2004

On Fri, 17 Dec 2004 13:07:08 -0500, Doran, Harold <HDoran at air.org> wrote:
> You can use factanal to do the analysis. The polychor() package will
> give you polychorics. You can then the do the factor analysis on this
> correlation matrix.
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Tom Denson
> Sent: Friday, December 17, 2004 12:31 PM
> To: R-help at stat.math.ethz.ch
> Subject: [R] Factor analysis with dichotomous variables
> Hello,
> I would like to conduct an exploratory factor analysis with dichotomous
> data. Do any R routines exist for this purpose? I recall reading
> something about methods with tetrachoric correlations.
> Any help would be appreciated.

You may also want to consider the routines in MCMCpack
(MCMCordfactanal and MCMCmixfactanal), depending on your application.

Chris Lawrence - http://blog.lordsutch.com/

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