immer: Item Response Models for Multiple Ratings

Implements some item response models for multiple ratings, including the hierarchical rater model, conditional maximum likelihood estimation of linear logistic partial credit model and a wrapper function to the commercial FACETS program. See Robitzsch and Steinfeld (2018) for a description of the functionality of the package. See Wang, Su and Qiu (2014; <doi:10.1111/jedm.12045>) for an overview of modeling alternatives.

Package details

Author Alexander Robitzsch [aut, cre], Jan Steinfeld [aut]
MaintainerAlexander Robitzsch <>
LicenseGPL (>= 2)
Package repositoryView on CRAN
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immer documentation built on May 17, 2022, 5:08 p.m.