Every mathematician and philosopher should watch this video by Sarah-Jane Leslie (Philosophy, Princeton) on her study with Andrei Cimpian (Psych, Illinois). Takes just 11 minutes.

[youtube https://www.youtube.com/watch?v=FM6mbSiD3eA]

Then you can go and read the original study in Science or any of the writeups in, e.g., the Science news blog, Chronicle, Daily Nous, etc.