In this optical illusion picture, the number 28 is hiding among 82’s. Are you one of the selected few with the sharpest ...

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 ...

There are many ways to exercise our brain, boost our IQ level, and enhance our thinking ability to observe or analyse objects after seeing. In today’s puzzle challenge, there is a challenging symbol, ...

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

Do you think you have sharp eyes? Try this optical illusion IQ test and spot the hidden needle without getting distracted by ...

From twinkling constellations to stellar life cycles, this starry skywatching quiz will test your cosmic knowledge. When you purchase through links on our site, we may earn an affiliate commission.

Is our level of intelligence inborn or acquired during our lifetime? Is it possible to become smarter and increase our IQ score? This is one of the hottest scientific and politically sensitive ...

Lawrence Whalley received funding from Scottish Government, Henry Smith Charity, BBSRC, MRC, Alzheimer's Research Trust, The Wellcome Trust. Many people object to intelligence tests. Some say IQ test ...

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 ...