Response Probability Functions R package rpf version 1.0.15 CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Factor out logic and math common to Item Factor Analysis fitting, diagnostics, and analysis. It is envisioned as core support code suitable for more specialized IRT packages to build upon. Complete access to optimized C functions are made available with R_RegisterCCallable(). This software is described in Pritikin & Falk (2020) <doi:10.1177/0146621620929431>. Software Depends: methods, parallel, R (>= 2.14.0) Imports: Rcpp (>= 1.0.2), mvtnorm, lifecycle LinkingTo: Rcpp, RcppEigen Suggests: testthat, roxygen2, ggplot2, reshape2, gridExtra, numDeriv, knitr, mirt, markdown Joshua Pritikin <jpritikin@pobox.com> Comprehensive R Archive Network (CRAN) Joshua Pritikin [cre, aut], Jonathan Weeks [ctb], Li Cai [ctb], Carrie Houts [ctb], Phil Chalmers [ctb], Michael D. Hunter [ctb], Carl F. Falk [ctb] GPL (>= 3) 2025-05-04 application/tgz https://CRAN.R-project.org/package=rpf doi:10.32614/CRAN.package.rpf