An IQ or "intelligence quotient" test aims to assess a person's intellectual abilities in areas like reasoning, problem solving, spatial imagery, and memory. The general concept of IQ emerged in the ...

IQ tests are simple brain teasers that test your intelligence and critical thinking skills. These puzzles stimulate your brain and test your logical and analytical abilities. IQ tests are an excellent ...

John, 12-years-old, is three times as old as his brother. How old will John be when he is twice as old as his brother? Two families go bowling. While they are bowling, they order a pizza for £12, six ...

New research complicates the old consensus that IQ is largely fixed, and that's good news for anyone looking to boost their ...

Daphne Martschenko does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...