Methods, metascience, and small experiments — tools and habits for more honest research.
01 / methods & tools
MCPower — Monte Carlo Power Analysis
Monte Carlo power analysis for complex models. Find the sample size you need, or check whether a study has enough power, even where traditional analytic formulas can’t reach. Available as a Python package and a standalone desktop app.
Likelihood Ratio Test for Publication Bias
A statistical method designed to detect and quantify publication bias in datasets of heterogeneous study results.
PLSKit
Cross-language partial least squares with a modern inference layer — Rust core, Python / R / Julia wrappers.
02 / open science
Society for Open Science
Founder and board member. Promoting collaboration, transparency, and the practical reuse of research results — by scientists, educators, NGOs, industry, and the wider public. A transparent, critical methodology that makes work replicable and verifiable.
CATS Conference
An interdisciplinary metascience conference where discussion and individual feedback come first — bringing all academic levels into one room to wrestle with the real challenges of doing research.
Estimating Replicability of Polish Psychology
A study on how higher-education reform and the Publish-or-Perish dynamic shape questionable research practices, with a comparison and ranking of Polish psychology institutes by publication-bias indicators.
03 / programming
Procrustes
Orthogonal Procrustes and signed-permutation matrix alignment — a small, fast Rust crate built on faer.
Inough
An R package for detecting inattention in long psychophysical tasks — flagging trials where participants have likely disengaged.
Leyline
Mapping the hidden connections between studies, datasets, and authors — a graph layer over the literature.
04 / other projects
ReproducibiliTea — Warsaw
A series of seminar meetings in the ReproducibiliTea format, introducing Open Science to students and the curious public — and naming the problems that the movement, in Poland and beyond, is trying to address.
Methodological School Under Sails
A summer school on the Mazurian Lakes pairing philosophy-of-science and statistics workshops with sailing — run annually with the Society for Open Science.
05 / other papers
- Plisiecki, H., Lenartowicz, P., Pokropek, A., Małyska, K., & Flakus, M. (2025). Measuring Individual Differences in Meaning: The Supervised Semantic Differential. PsyArXiv. doi.org/10.31234/osf.io/gvrsb_v1
- Plisiecki, H., Lenartowicz, P., Flakus, M. et al. (2025). High risk of political bias in black-box emotion inference models. Sci Rep 15, 6028. doi.org/10.1038/s41598-025-86766-6
- preregistration Methodological challenges in psychedelic-assisted therapy research for substance-use disorders. OSF. osf.io/pnk23