POLYSEM: Stata module to perform confirmatory factor analysis of ordinal indicators by diagonally weighted least squares on polychoric correlations

Yusuf Toyin Yusuf ()
Additional contact information
Yusuf Toyin Yusuf: Kwara State University

Statistical Software Components from Boston College Department of Economics

Abstract: polysem fits the factor model R = Lambda Phi Lambda' + Theta to the polychoric, polyserial and Pearson correlations of the indicators. Here Theta is diagonal with Theta_ii = 1 - (Lambda Phi Lambda')_ii, because the latent responses have unit variance. The command: 1. runs polycorr to obtain the vector of correlations r and its covariance matrix V; 2. minimizes (r - sigma(theta))' W (r - sigma(theta)) by Gauss-Newton with step halving.

Language: Stata
Requires: Stata version 14 and polycorr from SSC (q.v.)
Keywords: confirmatory factor analysis; polychoric correlations (search for similar items in EconPapers)
Date: 2026-10-30
Note: This module should be installed from within Stata by typing "ssc install polysem". The module is made available under terms of the MIT license (https://opensource.org/licenses/MIT).
References: Add references at CitEc
Citations:

Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/p/polysem.ado
http://fmwww.bc.edu/repec/bocode/p/polysem.sthlp
http://fmwww.bc.edu/repec/bocode/p/polysem_examples.do
http://fmwww.bc.edu/repec/bocode/p/polysem_cert.do

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:boc:bocode:s459955

Ordering information: This software item can be ordered from
http://repec.org/docs/ssc.php

Access Statistics for this software item

More software in Statistical Software Components from Boston College Department of Economics Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA. Contact information at EDIRC.
Bibliographic data for series maintained by Christopher F Baum ().