The intervalpsych package provides a toolbox for the analysis of interval responses in psychometrics and similar disciplines. Interval responses can be used to represent uncertainty or variability in responses to survey items, for example. Besides transformation and plotting function, the package also contains a wrapper to estimate the Interval Consensus Model (ICM; Kloft, Siepe & Heck, 2024) in the probabilistic programming language Stan. Results of the model can be visualized and summarized using the functions provided in the package.
You can install the released version of intervalpsych from CRAN with:
install.packages("intervalpsych")You can install the latest development version of intervalpsych from GitHub with:
# install.packages("devtools")
devtools::install_github("matthiaskloft/intervalpsych")The best way to get started is to visit the package website and the introductory vignette:
Vignette: Interval Consensus Model
If you want to cite the package, please use the following citation:
Kloft, M., Siepe, B. S., & Heck, D. W. (2024, October 25). The Interval Consensus Model: A Consensus Model for Continuous Bounded Interval Responses. PsyArXiv Preprint. https://doi.org/10.31234/osf.io/dzvw2
As a BibTeX entry:
@article{kloft2024,
title={The Interval Consensus Model: A Consensus Model for Continuous Bounded Interval Responses},
author={Kloft, Matthias and Siepe, Bj{\"o}rn S. and Heck, Daniel W.},
note={PsyArXiv Preprint},
year={2024},
doi={10.31234/osf.io/dzvw2},
url={https://doi.org/10.31234/osf.io/dzvw2}
}