http://www.bbc.co.uk/science/humanbody/mind/surveys/smiles/index.shtml
For some years, I had smiles that did not appear genuine in some situations because my reactions were so damped-down and controlled. My public smile was one or both corners of the mouth twitching ever so slightly; my real smile was more often than not interpreted as a frown.
For some years, I had smiles that did not appear genuine in some situations because my reactions were so damped-down and controlled. My public smile was one or both corners of the mouth twitching ever so slightly; my real smile was more often than not interpreted as a frown.