IRT Separate Calibration Linking Methods
Overview
Item response theory based methods are used to compute linking constants and conduct chain linking of unidimensional or multidimensional tests for multiple groups under a common item design. The unidimensional methods include the Mean/Mean, Mean/Sigma, Haebara, and Stocking-Lord methods for dichotomous (1PL, 2PL and 3PL) and/or polytomous (graded response, partial credit/generalized partial credit, nominal, and multiple-choice model) items. The multidimensional methods include the least squares method and extensions of the Haebara and Stocking-Lord method using single or multiple dilation parameters for multidimensional extensions of all the unidimensional dichotomous and polytomous item response models. The package also includes functions for importing item and/or ability parameters from common IRT software, conducting IRT true score and observed score equating, and plotting item response curves/surfaces, vector plots, information plots, and comparison plots for examining parameter drift.
Install
Health
NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc
Maintainer: ‘Jonathan P. Weeks <weeksjp@gmail.com>’
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- NOTE9 OK, 4 NOTE2026-06-27
- WARNING8 OK, 4 NOTE, 1 WARNING2026-06-14
- NOTE6 OK, 8 NOTE2026-03-10
Documentation
- Help pages
- 33includes a package overview page
- Examples that run
- 100%14 run in a plain check
- Exported functions with examples
- 50%
- Documented parameters
- 100%
- Return-value docs
- 100%
- Help pages citing references
- 48%
Downloads
Dependencies
Installing plink adds 1 package (1 with compiled code, 91 KB of source tarballs). Heaviest: statmod 91 KB.
Code & Tests
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People & History
Maintainer since 0.0-0 (2007)
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- 1.5-1Latest
- RR 3.4.0 released · 2017-04-21
- unarchivedReturned to CRAN2017-04-07
- 1.5-02017-04-07 · diff ↗
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- archivedRemoved from CRAN2014-09-20vignette locations were never updated for R 3.1.0
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- RR 2.13.0 released · 2011-04-13
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- 1.2-72010-10-19 · diff ↗
- RR 2.12.0 released · 2010-10-15
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- 1.2-42010-07-27 · diff ↗
- RR 2.11.0 released · 2010-04-22
- 1.2-3
- RR 2.10.0 released · 2009-10-26
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- 0.0-02007-09-04
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Package metadata
- First published
- 2007-09-04
- Total releases
- 29 / 19 yrs
- License
- GPL (>= 2) OSI
- Minimum R
- ≥ 3.3.3
- Bundled data
- 32 KB / 1 file
- Download size
- 631 KB
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