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psychotools  

Psychometric Modeling Infrastructure
View on CRAN: Click here


Download and install psychotools package within the R console
Install from CRAN:
install.packages("psychotools")

Install from Github:
library("remotes")
install_github("cran/psychotools")

Install by package version:
library("remotes")
install_version("psychotools", "0.7-5")



Attach the package and use:
library("psychotools")
Maintained by
Achim Zeileis
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2011-10-05
Latest Update: 2024-05-11
Description:
Infrastructure for psychometric modeling such as data classes (for item response data and paired comparisons), basic model fitting functions (for Bradley-Terry, Rasch, parametric logistic IRT, generalized partial credit, rating scale, multinomial processing tree models), extractor functions for different types of parameters (item, person, threshold, discrimination, guessing, upper asymptotes), unified inference and visualizations, and various datasets for illustration. Intended as a common lightweight and efficient toolbox for psychometric modeling and a common building block for fitting psychometric mixture models in package "psychomix" and trees based on psychometric models in package "psychotree".
How to cite:
Achim Zeileis (2011). psychotools: Psychometric Modeling Infrastructure. R package version 0.7-5, https://cran.r-project.org/web/packages/psychotools. Accessed 06 Aug. 2026.
Previous versions and publish date:
(2026-07-11 04:30), 0.1-1 (2011-10-05 13:07), 0.1-2 (2012-02-11 21:02), 0.1-3 (2012-05-15 00:33), 0.1-4 (2012-10-23 09:23), 0.2-0 (2014-02-03 20:32), 0.3-0 (2014-08-29 01:21), 0.4-0 (2015-01-20 01:17), 0.4-1 (2016-07-26 14:12), 0.4-2 (2016-09-09 10:46), 0.4-3 (2018-05-17 07:28), 0.5-0 (2018-12-19 23:48), 0.5-1 (2020-01-28 15:20), 0.6-0 (2020-11-17 09:20), 0.6-1 (2021-05-21 14:20), 0.7-0 (2021-09-28 14:40), 0.7-1 (2022-04-30 01:00), 0.7-2 (2022-08-04 13:45), 0.7-3 (2023-06-09 18:00), 0.7-4 (2024-05-11 10:40), 0.7-5 (2025-10-21 07:10), 0.7-6 (2026-02-11 17:20)
Other packages that cited psychotools R package
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Complete documentation for psychotools
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