Blog
How intelligence tests work, what the animal studies found, and where the puzzles in our games come from.
Are online IQ tests accurate? How to tell a real test from a scam
What an IQ score actually measures, why most free online IQ tests are either meaningless or a subscription trap, and seven checks that separate a real test from a fake one.
The Monty Hall problem: why pigeons win and people don’t
Three doors, one car and a host who knows where it is. Why switching wins two times out of three, why almost nobody believes it, and how six pigeons learned it in a month.