Among many things, it's something that has always annoyed women about men.
Some of them think they're sooo clever.
Well research has finally shown that men overestimate their intelligence, whereas women apparently
have an accurate gage of their brain power.
A study carried out at Washington State University asked men and women to take a maths test and
then guess how well they'd done.
The guinea pig men and women were then told their scores, and asked to take another test.
During the second, there was no information offered about how they'd done.
And it turns out the men consistently thought they'd done better than they actually had.
The women however, guessed with far more precision how well they did.
The report basically says that gender gaps in areas like science, engineering and maths
are not necessarily the result of women having low self-esteem when it comes to their ability,
since their estimations were right on the money.
It's just that men think too highly of their's.
Some of you will probably argue yes, the study is pretty flawed.
What does asking 122 people to take a maths test really show in the grand scheme of things?
But, the researchers say it also shows the potential need for "positive illusions" - so
if you kid yourself enough, it seems you might well continue to pursue scientific studies,
even if your initial results aren't too good.