Add Yahoo as a preferred source to see more of our stories on Google. These quizzes seek to test your IQ by asking you various challenging questions about all kinds of subjects. Take each quiz to find ...

Add Yahoo as a preferred source to see more of our stories on Google. If you've ever wondered how high your IQ really is, tackling these 13 Ph.D. D-level questions might just give you a hint. These ...

People who think at a genius level don't talk more — instead, they ask smart questions that show how curious they are. These 11 questions reveal how intelligent people think and stay mentally engaged.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Observational skills puzzles are designed to test and improve a person's ability to notice details, patterns, and differences in visual or logical scenarios. These puzzles often require close ...

To have an average IQ means that you are within normal intelligence range. According to the Wechsler Adult Intelligence Scale, an average IQ score is between 90-109. However, average IQ varies widely ...