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History of IQ testing, methods used in IQ testing historically.

Optical illusions are more than just a fun way to measure your IQ and observational skills. These mind-bending optical illusion puzzles trick your brain into seeing what isn’t there. Today’s ...

Optical illusions are an incredible way to measure your IQ and sharpen your observation skills. These visual challenges test your brain’s ability to process complex images, revealing just how ...

In a previous post, I argued that concepts and concerns, such as free will and determinism, can be complex in the same sense in which numbers can be: in other words, in combining a real with an ...