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irtoys

A Collection of Functions Related to Item Response Theory (IRT)

A collection of functions useful in learning and practicing IRT, which can be combined into larger programs. Provides basic CTT analysis, a simple common interface to the estimation of item parameters in IRT models for binary responses with three different programs (ICL, BILOG-MG, and ltm), ability estimation (MLE, BME, EAP, WLE, plausible values), item and person fit statistics, scaling methods (MM, MS, Stocking-Lord, and the complete Hebaera method), and a rich array of parametric and non-parametric (kernel) plots. Estimates and plots Haberman's interaction model when all items are dichotomously scored.

Versions across snapshots

VersionRepositoryFileSize
0.2.2 rolling linux/jammy R-4.5 irtoys_0.2.2.tar.gz 765.4 KiB
0.2.2 rolling linux/noble R-4.5 irtoys_0.2.2.tar.gz 763.9 KiB
0.2.2 rolling source/ R- irtoys_0.2.2.tar.gz 609.8 KiB
0.2.2 latest linux/jammy R-4.5 irtoys_0.2.2.tar.gz 765.4 KiB
0.2.2 latest linux/noble R-4.5 irtoys_0.2.2.tar.gz 763.9 KiB
0.2.2 latest source/ R- irtoys_0.2.2.tar.gz 609.8 KiB
0.2.2 2026-04-26 source/ R- irtoys_0.2.2.tar.gz 609.8 KiB
0.2.2 2026-04-23 source/ R- irtoys_0.2.2.tar.gz 609.8 KiB
0.2.2 2026-04-09 windows/windows R-4.5 irtoys_0.2.2.zip 770.7 KiB
0.2.2 2025-04-20 source/ R- irtoys_0.2.2.tar.gz 609.8 KiB

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