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.
| Version: |
0.2.2 |
| Depends: |
sm, ltm |
| Suggests: |
MASS, knitr, rmarkdown |
| Published: |
2022-05-12 |
| Author: |
Ivailo Partchev [aut, cre],
Gunter Maris [aut],
Tamaki Hattori [ctb] |
| Maintainer: |
Ivailo Partchev <partchev at gmail.com> |
| License: |
GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: |
yes |
| Materials: |
NEWS |
| In views: |
Psychometrics |
| CRAN checks: |
irtoys results |
Documentation:
Downloads:
Reverse dependencies:
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