Smile And The World Smiles With You

Louis Armstrong sang, "When you're smilin', the whole world smiles with you." Romantics everywhere may be surprised to learn that psychological research has proven this sentiment to be true — merely seeing a smile (or a frown, for that matter) will activate the muscles in our face that make that expression, even if we are unaware of it. Now, according to a new study in Psychological Science, a journal of the Association for Psychological Science, simply reading certain words may also have the same effect.