Are you an expert puzzle solver? Test your IQ and problem-solving skills by solving this viral math puzzle in 3 seconds. Only ...

Can you score 10/10 on this optical illusion IQ test? You have 10 seconds to answer correctly. Here we have a checkered board image in which your challenge is to tell if the horizontal lines are ...

Are you ready to put your pattern-spotting, logic, and IQ to the test? In this challenge, we’ll twist numbers, letters, and ...

American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.