New research complicates the old consensus that IQ is largely fixed, and that's good news for anyone looking to boost their ...

These quizzes seek to test your IQ by asking you various challenging questions about all kinds of subjects. Take each quiz to find out if you're a genius (I bet you are). Time to test your vocabulary ...

Average IQ varies depending on geographic location, resource access, and much more.

This brain teaser image presents you with a situation where four men have climbed a tree and cutting off branches. Your ...