Those with ring fingers longer than index fingers did better on the math part of a standardized test than the reading part.
VOA: special.2009.02.25
But by 2012, city children in third and fourth-grades had narrowed the test-score gap onmath with their peers throughout the state but fell a few points short of pulling even.
In one such experiment, subjects were able to cheat on a mathtest. (They were given access to the answers.) As expected, there was score inflation among those able to cheat.