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To cite irtsim in publications, please use:
Ward S (2026). irtsim: Monte Carlo Simulation-Based Sample-Size Planning for Item Response Theory. R package version 0.1.1, https://github.com/sward1/irtsim.
The methodological framework implemented by irtsim is described in:
Schroeders U, Gnambs T (2025). “Sample size planning in item response theory: A 10-decision framework.” Advances in Methods and Practices in Psychological Science. doi:10.1177/25152459251314798.
Corresponding BibTeX entries:
@Manual{,
title = {irtsim: Monte Carlo Simulation-Based Sample-Size Planning
for Item Response Theory},
author = {Stephen Ward},
year = {2026},
note = {R package version 0.1.1},
url = {https://github.com/sward1/irtsim},
}
@Article{,
title = {Sample size planning in item response theory: A
10-decision framework},
author = {Ulrich Schroeders and Timo Gnambs},
journal = {Advances in Methods and Practices in Psychological
Science},
year = {2025},
doi = {10.1177/25152459251314798},
}
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.