10 Reasons Why We Have To Smile Often

As you’ll have noticed, though, not everyone does smile back. Hinsz and Tomhave (1991) wanted to see what proportion of people would respond to a smile aimed at them with their own smile. Their results suggest around 50% of people reciprocate. In comparison almost no one responds to a frown with their own frown. Smiling at a stranger and getting a smile back is a great feeling after all.