Psych Out

If I'm on a date (which believe me, doesn't happen often) I can usually tell how its going by how, and how much, my date is smiling. Is the smile genuine or forced? Polite or flirty? Or worse yet, not smiling at all?? Either way, a lot of emotional content can be found in a person's smile. But wait, is smiling universal? What I mean is, is the emotional content constant across different cultures? There isn't much to smile about when you go to the Department of Motor Vehicles, but you're still asked to when you get your picture taken for your driver's license. Most people comply. However I…