Smiling and its effects on people

Since Kindergarten, children are taught to associate certain emotions
with certain facial expressions. This social norm is reinforced consistently
throughout childhood. One of the most mundane of these is that smiling
represents happiness, friendliness, and joy. However, as we examine the
world around us, we find ourselves asking, 'Why do people really smile?'
This study will seek to determine the times that adults smile, and what
emotions they are really feeling at the time.
LITERATURE REVIEW
Before exploring the sociological aspects of the encoding and decoding of
facial expressions, we must first set strict guidelines for what can be
regarded as a smile, or other facial expression. Evidence of many forms,
including genetic and behavioral, confirms that primates and humans are close
relatives. Since facial expressions are inevitably constrained by biological
facial components (i.e. brow, eyelids, mouth, corners, lips, etc.), apes seem
like a likely sourc...