[agumonkey]

It's been showed for girls and also other classes too. Too much bias is bad, positive or negative. It shifts your focus from reading and thinking to an imaginary expectation about things.

Reminds me something else: in college I failed hard, some times I tried to really learn but would drown at the second question. Surprisingly the topic I didn't even bother to learn, I had better grades. Because all I had was 2 hours, the subject and my brain. I didn't feel demotivated by not being able to answer question 2 since I was unable to answer any of these right off the bat. But after thinking, I could grab a few point here and there, and try every problems. It even became absurd when at a discrete math exam (that nobody loves) every body left after the first page thinking page 2 would be even harder. Turns out the remaining exercices were trivial, even for my tourist self. So I ended in the first pack.