On January 26th this year, Johnny van Doorn presented an hour-long tutorial lecture on “Theory and Practice of Bayesian Inference Using JASP”. You can check it out on YouTube here! Highly recommended. Eric-Jan Wagenmakers Eric-Jan (EJ) Wagenmakers is professor at the Psychological Methods Group at the University of Amsterdam.

For better or for worse, it appears that my most appreciated work is the children’s book Bayesian Thinking for Toddlers (the intro post is here and an exegesis is here). Piled up in my office is a stack of self-printed hardcopies that I hand out to students and colleagues; other than that, the book is not easy to obtain. Maybe…

The statistical significance test was not invented by Ronald Fisher. The key idea was already laid out by Francis Ysidro Edgeworth (1845-1926), whose 1885 article “Methods of statistics” is quite explicit about the purpose, design, and interpretation of the significance test. As summarized by Kennedy-Shaffer: In 1885, Francis Ysidro Edgeworth provided a more formal mathematical underpinning for the significance test…

The logarithm is a key concept in mathematics and statistics. Most students will be introduced to the logarithm as the function that is the inverse of exponentiation, or the function that turns multiplication into addition. But without a good intuition of what the logarithm actually is, students can struggle to remember how to compute the logarithm of base r for…

This post is a teaser for Velidi, P., Wei, Z., Kalaria, S. N., Liu, Y., Laumont, C. M., Nelson, B. H., & Nathoo, F. S. (2025). Generalized Jeffreys’s approximate objective Bayes factor: Model-selection consistency, finite-sample accuracy, and statistical evidence in 71,126 clinical trial findings. ArXiv preprint:2510.10358. Abstract “Concerns about the misuse and misinterpretation of p-values and statistical significance have motivated…