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 ...

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 aren't your typical trivia questions—they require deep thinking and a ...

If brain teasers are your idea of relaxation, put on your thinking caps for our 25 tricky IQ questions and answers! We promise to deliver you some mind-boggling questions! You’ve probably done a few ...

There are several different ways to test observation skills withan IQ test. But, solving the brain teaser challenge ...

An optical illusion is a visual phenomenon where our eyes perceive something differently from reality, tricking the brain into misinterpreting what it sees. These illusions occur because the brain ...

A brain teaser is a short, playful puzzle designed to stretch your mind and make you smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think beyond ...

Questions from the world’s shortest IQ test even stumped students at Yale and Harvard! Maybe you have a dark sense of humor, or perhaps you failed your driver’s test—both are signs of intelligence, ...

A brain teaser is a short, playful puzzle designed to challenge your mind and elicit a smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think ...

Forbes contributors publish independent expert analyses and insights. Dr. Lance B. Eliot is a world-renowned AI scientist and consultant. In today’s column, I examine a social media trend that is ...

Scientists working within the Human Brain Project have for the first time uncovered a direct relation between brain cell size and IQ level. As they describe in the journal eLife, larger neurons in the ...

Ready for a world in which a $50 DNA test can predict your odds of earning a PhD or forecast which toddler gets into a selective preschool? Robert Plomin, a behavioral geneticist, says that’s exactly ...