The 20th century saw the "Flynn effect"—massive gains in IQ from one generation to another. Now Flynn explains why On a rather dull Saturday in November 1984, I found a bombshell in my letterbox. I ...

Puzzle IQ tests are puzzle challenges that present readers with problems in the form of pictures. You have to solve the picture puzzle within a time limit. These challenges evaluate an individual's ...

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 ...

A viral '7-Second Challenge' is baffling internet users, tasking them to find a hidden dog amidst a sea of pandas. This ...

Do you enjoy a good brain challenge? Here’s one that might look easy, but only the sharpest minds can solve it in just 6 seconds! This Picture Puzzle IQ Test asks you to find all the numbers hidden ...

James R. Flynn is an accidental IQ specialist. In the early 1980s, the American-born political scientist, a longtime New Zealander, thought he might spend a few pages in a planned book on “how to ...

Brain teasers have a curious way of making us stop and rethink even the most basic facts. Whether you're a logic lover or simply someone who enjoys challenging their mind, there's something oddly ...