At almost 80 years old, concerns are growing about his mental agility and stamina for the job after several ‘naps’ during meetings and late night posting ...

Add Yahoo as a preferred source to see more of our stories on Google. President Biden at the debate on June 27. (Kyle Mazza/Anadolu via Getty Images) (Anadolu via Getty Images) At 81, President Biden ...

Many online IQ tests come across as little more than digital parlor tricks. Users often end up with vague, unverified results. In other cases, the platforms tell people what they want to hear. Either ...

In a world of wild talk and fake news, help us stand up for the facts.

Most adults never have to take an IQ test. But tests for assessing students' cognitive abilities, such as the cognitive ability test (Cat), are used in schools around the world. These tests are very ...

This letter is in response to CNN medical commentator Dr. Sanjay Gupta's call for President Joe Biden to undergo a transparent, contemporary, comprehensive cognitive test. In reply to Dr. Gupta's call ...

The study tested 267 soldiers, finding that 20 minutes of activity strongly predicts performance on the Armed Forces ...