The ancient Greeks used mnemonic devices to remember lengthy speeches, a testament to their effectiveness. Mnemonics are ...

How often do you feel—and express—gratitude in your everyday life? Perhaps you’re thinking of the numerous times that you’ve said “thank you” to someone for holding the door—or maybe you’re ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...