Idea dating all smiles agree, excellent
Human beings smile for a number of reasons. People are fascinated by smiles - all of them. This enigmatic facial expression has been the subject of hundreds of studies. One of the most useful ways to categorize smiles is according to their social function, or the purposes they serve in groups of people. Broadly speaking, there are three kinds of smiles: smiles of reward, smiles of affiliation, and smiles of dominance. A smile may be among the most instinctive and simple of expressions - just the hoisting of a couple of facial muscles. But as a form of social interaction and communication, a smile is complex, dynamic, and powerful.