diffIRT: Diffusion IRT Models for Response and Response Time Data

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.

Getting started

Package details

AuthorDylan Molenaar
MaintainerDylan Molenaar <[email protected]>
Package repositoryView on CRAN
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diffIRT documentation built on May 2, 2019, 4:51 a.m.