Welcome back! For Day 4 of the challenge, let’s do a short and fun activity based around a concept called cognitive reserve.

Spot the hidden number 3 in a 9-second brain teaser optical illusion that tests observation, IQ, and visual perception skills ...

One of the most fascinating aspects of brain teasers is their ability to measure and enhance IQ. Intelligence Quotient (IQ) is often associated with problem-solving ability, abstract reasoning, and ...

So, only the Top 140+ IQ with Hawk Eye Vision can find the Correct Directional Arrow. So if you think that your IQ is higher ...