Research confirms the social significance of the smile. Even in situations where there is a wrongdoer, there is a phenomenon called the “smile-leniency effect.”If the wrongdoer smiles, others perceive the offender as more trustworthy and likable. Statistically, judges actually give shorter sentences to people who smile. Simply smiling when you are with someone else will make them much more likely to like you and listen to your message.
People just feel warmer towards those who smile. If you had a choice, would you want to approach a person who is frowning or smiling? The effects of a smile are so powerful that even a smile on the telephone produces positive results. Added bonus, smiling also raises your confidence. Do we smile because we are happy? Or are we happy because we smile? Science says both are true.