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tadaatoolbox contains helpers for data analysis and presentation focused on undergrad psychology, the target audience being students at University of Bremen.

Please consider this as a teaching project and be careful if you intend to use it for production use.
To see what’s new, see
Also, since this project is still in the 0.x.y version, you should expect the API to change at any time. Once we reach 1.0.0, API changes will be rolled out more slowly and include deprecation warnings. In the meantime, the package is available on CRAN primarily for convenience, because its target audience is likely not familiar with GitHub or remotes.


Install the current development version from GitHub (recommended):

Or install the most recent stable version from CRAN:



Please do! I have no idea where I’m going with this. Feel free to open issues.


Contributer Role
Lukas Burk Author & Maintainer
Tobias Anton Author
Daniel Lüdecke Contributor
Gesa Graf Contributor


See the included vignette for a demonstration: browseVignettes("tadaatoolbox") or view the pkgdowned version of this repo for an overview and function index.
Here’s a few highlights:

Tidy (as in pretty) test output

See all of them in action in this vignette

  • tadaa_aov: For 3 flavours of aov with included partial (\eta^2) and Cohen’s f.
  • tadaa_kruskal: A wrapper for kruskal.test tidied and optionally pixiedusted.
  • tadaa_t.test: For t.test with automatic effect size.
  • tadaa_wilcoxon: A wrapper for wilcox.test tidied and optionally pixiedusted.
  • tadaa_levene: Wrapper for car::leveneTest tidied and optionally pixiedusted.
  • tadaa_pairwise_t, tadaa_pairwise_gh and tadaa_pairwise_tukey for various pairwise procedures.

Helpers for plots

  • tadaa_int: Simple interaction plot template.
  • tadaa_balance: Check equality of group sizes.
  • tadaa_mean_ci: Plots means with 95% confidence intervals as errorbars.
  • tadaa_plot_tukey: For pretty TukeyHSD visualization.

Code of Conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.