10 index cards that are each three inches by five inches (Alternatively, you could use fewer or more cards that are larger or smaller in size, respectively.) Colored markers of five different colors ...

A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may ...

Ours is an era of noise and distractions. How well do you handle them? This psychology exercise tests your ability to filter out distractions and focus on the task at hand. It’s a short, simple game ...