Interactions are still not important: not in medical data either
Yesterday I wrote about a study I did of the OKCupid dataset. The point was to show that interaction effects are almost always tiny and you should adjust your effect…
Interactions are generally not important in social science
Some years ago both me and Jonatan Pallesen looked into the generality of statistical interaction effects. These look like this: In real life, however, interactions are mostly not a real…
Dysgenics for whom?
Some time ago, we published studies showing that the negative correlation between intelligence and fertility varies by other factors. Specifically, we found that it varies by religiousness and conservatism, in…
Convenience samples are fine because interactions are mostly not real
Attacking a study for using a non-representative, typically online convenience sample is common practice. However, for most studies, this is wrong-headed and here I want to argue why that is…
You can’t ignore gene-environment correlations when looking for gene-environment interactions
Humans love interactions, they tell interesting stories (however, no study has investigated this bias, AFAIK). However, statistics and nature hate interactions. Interactions in general have low prior, and because people…