A mean platelet volume (MPV) test measures the average size of your platelets, which are small blood cells that help with blood clotting. Typical MPV levels range from 7 to 13 femtoliters. High MPV ...

Question Everything is a weekly investigation into how the truth gets buried, distorted, and denied -- and the ways people are fighting to make it matter again. Hosted by Brian Reed, of S-Town and ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

In 1982, more than 300,000 students took the SAT, facing a question that seemed straightforward but led every single test taker to the wrong answer. The twist came later, when a handful of students ...

VocabOwl has turned vocabulary size into the kind of number people want to post, argue over, and quietly retake when the result feels too cruel. The viral vocabulary test asks 100 multiple-choice ...

In the middle of a game night with friends, and looking for a simple and easy way to break the ice? Then a classic 21 Questions Game might be just what you are after—and we are here to help make it ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Think you know everything about Christmas? Let’s find out with this collection of Christmas trivia questions and answers. For instance, who wrote and recorded the classic holiday song “Wonderful ...

The Write Question is a weekly literary program hosted by Lauren Korn that features authors from the American West—and beyond—including James Lee Burke, Kate Lebo, Anne Helen Petersen, Robert Wrigley, ...

L-theanine is an amino acid found mainly in green and black tea. Research suggests that around 200 to 400 milligrams (mg) per day may help manage anxiety and stress, though more research is necessary.