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diffIRT
View on CRAN: Click
here
Download and install diffIRT package within the R console
Install from CRAN:
install.packages("diffIRT")
Install from Github:
library("remotes")
install_github("cran/diffIRT") Install by package version:
library("remotes")
install_version("diffIRT", "1.5") Attach the package and use:
library("diffIRT")
Maintained by
Dylan Molenaar
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[Scholar Profile | Author Map]
All associated links for this package
First Published: 2013-11-05
Latest Update: 2015-08-14
Description:
Package to fit diffusion-based IRT models to response and
response time data. Models are fit using marginal maximum
likelihood. Parameter restrictions (fixed value and equality
constraints) are possible. In addition, factor scores (person drift
rate and person boundary separation) can be estimated. Model fit
assessment tools are also available. The traditional diffusion model
can be estimated as well.
How to cite:
Dylan Molenaar (2013). diffIRT: Diffusion IRT Models for Response and Response Time Data. R package version 1.5, https://cran.r-project.org/web/packages/diffIRT. Accessed 05 Mar. 2026.
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Other R packages that diffIRT depends,
imports, suggests or enhances
Complete documentation for diffIRT
Functions, R codes and Examples using
the diffIRT R package
Some associated functions: QQdiff . RespFit . anova . brightness . coef . diffIRT . extraversion . factest . rotation . simdiff . simdiffT . summary .
Some associated R codes: Full diffIRT package functions and examples
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