Individuals with high IQs, razor-sharp observation skills, and critical thinking abilities can crack this puzzle under ...

If you crack it within 5 seconds, congratulations! You likely have superior visual processing skills and a sharp IQ.

Brain teasers are not only fun but also an excellent way to exercise critical thinking and improve observation skills. This ...

Fewer than one in five people pass this IQ test, thought to be the shortest in the world only three questions long. The Cognitive Reflection Test has a pass rate of just 17 per cent, leaving the ...