IRT Equating Methods

Computation of direct, chain and average (bisector) equating coefficients with standard errors using Item Response Theory (IRT) methods for dichotomous items (Battauz (2013) , Battauz (2015) ). Test scoring can be performed by true score equating and observed score equating methods. DIF detection can be performed using a Wald-type test (Battauz (2018) ).


Changes in version: equateIRT_2.1

  • added function dif.test

Reference manual

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2.2.1 by Michela Battauz, 4 months ago

Browse source code at

Authors: Michela Battauz

Documentation:   PDF Manual  

Task views: Psychometric Models and Methods

GPL-3 license

Imports statmod, stats, utils, mirt

Suggests knitr, ltm, rmarkdown, sna

Imported by kequate.

Depended on by equateMultiple.

See at CRAN