A genuine smile that is being repressed to conceal extreme excitement or emotions.
This is the "gold standard" of authentic enjoyment, characterized by the engagement of muscles around the mouth and the eyes (causing crinkling or crow's feet). 0Smile
A closed-mouth smile used to indicate submission or discomfort. A genuine smile that is being repressed to
Used to show friendliness or comply with social norms, this smile moves the mouth but typically does not reach the eyes. Used to show friendliness or comply with social
Researchers have identified up to 19 different types of smiles, though they generally fall into three categories: reward, affiliation, and dominance.
Smiling triggers chemical reactions that boost your well-being. What's the science behind a smile? - British Council
A smile is a universal, instinctual human expression used to show joy, connection, friendliness, or even comfort in difficult situations. While often deemed a simple gesture, it is a complex, 43-muscle action that serves as a powerful nonverbal communication tool.