Test your visual IQ with this tricky optical illusion. Spot the correct number 24 hidden among flipped versions in 5 seconds.

Rep Jasmine Crockett says she would go head to head with Trump in an IQ test - ‘She’s a lowlife, and she’s a very low-IQ ...

President Donald Trump has gotten a response from Rep. Jasmine Crockett (D-TX) after he reportedly called her “low IQ.” Crockett appeared on Jimmy Kimmel’s show on Tuesday and he asked her if she was ...

Less 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 ...

How do you define and measure intelligence? The consensus seems to be that you can't, but the IQ test is the closest we've ...