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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Denson Sent: Friday, December 17, 2004 12:31 PM To: [EMAIL PROTECTED] 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. Best, Tom Denson Department of Psychology University of Southern California ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
