Smart people are not only defined by their exceptionally high scores on IQ tests.

They tend to share a number of other characteristics, such as insatiable curiosity and a good sense of humor.

Here are 11 qualities of super smart people: They are highly adaptable

Psychological research supports this idea. Intelligence depends on the ability to change your behaviors in order to cope more effectively with your environment or to make changes in your environment.

They realize how much they don’t know

Smarter people are able to admit when they are unfamiliar with a particular concept. As Jim Winer writes, intelligent people “are not afraid to say, ‘I don’t know.’ If they don’t know, they can learn.”

They have insatiable curiosity

Albert Einstein is said to have said, “I have no special talent, I’m just passionately curious.”

Or as Keyzurbur Alas says, “intelligent people allow themselves to be fascinated by things that others take for granted.”

They are open minded

Smart people don’t close themselves off to new ideas or opportunities. Hammett writes that intelligent people are “willing to accept and consider other views of value and broad-mindedness” and that they are “open to alternative solutions.”

Psychologists say that open-minded people—those who seek alternative perspectives and weigh evidence fairly—tend to score higher on the SAT and on intelligence tests.

They are social

Interestingly, 2016 research published in the British Journal of Psychology suggests that smarter people tend to get less pleasure than most people from hanging out with friends.