They found that lottery winners have 7% lower truancies than losers, and the effect is especially strong for older male students who experience a 21% decrease.
Or how about the Mass Effect series, which has a near-equal mix of male-female characters on the roster and even allows the player to be a female commander Shepard?
The same effect is evident in nature - animals that win fights for alpha male status experience a testosterone rush that makes them even more willing to fight and push their way to the top.
Walton's research has had a particularly dramatic effect on students' achievement, especially for minority students and women in overwhelmingly male-dominated majors, who may suffer from the dreaded minority achievement gap: the disparity in academic performance that often persists between minority and disadvantaged students and their white counterparts.