conquestr: An R Package to Extend 'ACER ConQuest'

Extends 'ACER ConQuest' through a family of functions designed to improve graphical outputs and help with advanced analysis (e.g., differential item functioning). Allows R users to call 'ACER ConQuest' from within R and read 'ACER ConQuest' System Files (generated by the command ‘put' <>). Requires ’ACER ConQuest' version 5.33.2 or later. A demonstration version can be downloaded from <>.

Version: 1.3.0
Imports: dplyr, ggplot2 (≥ 3.3.0), ggrepel, kableExtra, magrittr, methods, Rcpp, rlang, stats, stringr, tidyr, tidyselect, zlib
LinkingTo: Rcpp
Suggests: knitr, gridExtra, rmarkdown, testthat (≥ 3.0.0)
Published: 2024-02-18
DOI: 10.32614/CRAN.package.conquestr
Author: Dan Cloney ORCID iD [aut, cre], Ray Adams [aut]
Maintainer: Dan Cloney <dan.cloney at>
License: GPL-3
NeedsCompilation: yes
SystemRequirements: ACER ConQuest (>=5.34.3)
Materials: README NEWS
In views: Psychometrics
CRAN checks: conquestr results


Reference manual: conquestr.pdf
Vignettes: Data cleaning function in conquestr
Generate item responses in conquestr
Introduction to conquestr
Item analysis tables in conquestr
Plotting in conquestr
Probability of response vectors in conquestr
Item Review Sheets produced using conquestr


Package source: conquestr_1.3.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): conquestr_1.3.0.tgz, r-oldrel (arm64): conquestr_1.3.0.tgz, r-release (x86_64): conquestr_1.3.0.tgz, r-oldrel (x86_64): conquestr_1.3.0.tgz
Old sources: conquestr archive


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