Polychoric and Polyserial Correlations R package polycor version 0.8-2 CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Computes polychoric and polyserial correlations by quick "two-step" methods or ML, optionally with standard errors; tetrachoric and biserial correlations are special cases. Software Depends: R (>= 3.3.0) Imports: stats, mvtnorm, Matrix, parallel, admisc (>= 0.22) Duncan Murdoch <murdoch.duncan@gmail.com> Comprehensive R Archive Network (CRAN) John Fox [aut], Adrian Dusa [ctb], Duncan Murdoch [cre] GPL (>= 2) 2025-12-14 application/tgz https://CRAN.R-project.org/package=polycor doi:10.32614/CRAN.package.polycor