If you can find the mistake in this bridge picture in 5 seconds, you are among the top 1% with the highest visual acuity.

San Francisco, CA, June 13, 2025 (GLOBE NEWSWIRE) -- Quick IQ Test has launched its most advanced IQ testing experience yet. The official IQ test 2025 is now live for anyone seeking a real IQ test ...

Only 1% people in the world are capable of spotting the inverted 69 hidden in this tricky visual illusion IQ test picture.

New York City, NY, July 16, 2025 (GLOBE NEWSWIRE) -- QuickIQTest.org, one of the most widely recognized platforms for cognitive testing, has officially unveiled its new and enhanced IQ testing ...

A brain teaser is a short, playful puzzle designed to make your mind stretch and smile. It could be a riddle, a tricky ...

The following IQ test is designed to test non-verbal intelligence while minimizing cultural or educational biases. It's a culture fair IQ test that will measure your intellectual ability, entertain ...

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.

The fascination with optical illusions dates back to Greek philosophers like Epicharmus, Protagoras, Plato, and Aristotle, who first explored how our eyes, brain, or a combination of both can deceive ...

I love intelligent people and I’m fortunate to work professionally with a lot of them. Yet I’m always surprised to discover the enormous gaps that can exist between a person’s intellectual IQ and ...