IQ Test: IQ tests, or Intelligence Quotient tests, assess a person's cognitive abilities and problem-solving skills. These tests evaluate an individual's mental functions such as logical reasoning ...

This puzzle will test your intelligence and critical thinking skills. If you can guess the animal's name within 5 seconds, you have a sharp brain. Time starts now! These kinds of IQ tests are a ...

compared to teens that use alcohol, their brains are less physically impacted by the drug. (To be fair, this study didn't test the teen's IQ, only the physical changes to the brain.) ...