intervalpsych: Analyzing Interval Data in Psychometrics

Implements the Interval Consensus Model (ICM) for analyzing continuous bounded interval-valued responses in psychometrics using 'Stan' for 'Bayesian' estimation. Provides functions for transforming interval data to simplex representations, fitting item response theory (IRT) models with isometric log-ratio (ILR) and sum log-ratio (SLR) link functions, and visualizing results. The package enables aggregation and analysis of interval-valued response data commonly found in psychological measurement and related disciplines. Based on Kloft et al. (2024) <doi:10.31234/osf.io/dzvw2>.

Version:	0.1.0
Depends:	R (≥ 4.1)
Imports:	dplyr, ggdist, ggokabeito, ggplot2, methods, posterior, purrr, Rcpp (≥ 0.12.0), RcppParallel (≥ 5.0.1), rstan (≥ 2.18.1), rstantools (≥ 2.4)
LinkingTo:	BH (≥ 1.66.0), Rcpp (≥ 0.12.0), RcppEigen (≥ 0.3.3.3.0), RcppParallel (≥ 5.0.1), rstan (≥ 2.18.1), StanHeaders (≥ 2.18.0)
Suggests:	testthat (≥ 3.0.0)
Published:	2025-07-08
DOI:	10.32614/CRAN.package.intervalpsych
Author:	Matthias Kloft [aut, cre, cph], Björn S. Siepe [aut]
Maintainer:	Matthias Kloft <kloft.dev+intervalpsych at gmail.com>
BugReports:	https://github.com/matthiaskloft/intervalpsych/issues
License:	GPL (≥ 3)
URL:	https://matthiaskloft.github.io/intervalpsych/, https://github.com/matthiaskloft/intervalpsych
NeedsCompilation:	yes
SystemRequirements:	GNU make
Materials:	README NEWS
CRAN checks:	intervalpsych results

Documentation:

Reference manual:

intervalpsych.pdf

Downloads:

Package source:	intervalpsych_0.1.0.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries:	r-release (arm64): intervalpsych_0.1.0.tgz, r-oldrel (arm64): intervalpsych_0.1.0.tgz, r-release (x86_64): intervalpsych_0.1.0.tgz, r-oldrel (x86_64): intervalpsych_0.1.0.tgz

Linking:

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