New paper out: Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels

Together with Ed Dutton and Helmuth Nyborg: Dutton, E., Nyborg, H., & Kirkegaard, E. O. W. (2022). Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels. Mankind Quarterly,…

Continue ReadingNew paper out: Europeans Have Larger Testes than Sub-Saharan Africans but Lower Testosterone Levels

New paper out: County-level USA: No Robust Relationship between Geoclimatic Variables and Cognitive Ability

This one came out in Februrary, so we are a bit behind, but that's because I wanted to time the blogpost with the video. Aaaand the video is online now.…

Continue ReadingNew paper out: County-level USA: No Robust Relationship between Geoclimatic Variables and Cognitive Ability

Editor Matthias Ziegler rejects paper for political reasons, then says science should be neutral

Some colleagues wrote a paper summarizing intelligence/cognitive ability gaps in the United Kingdom based on large samples. Many of these were new results derived from government testing via freedom of…

Continue ReadingEditor Matthias Ziegler rejects paper for political reasons, then says science should be neutral