Basic Gesturs and Their Origins

BASIC GESTURES AND THEIR ORIGINS

The evolutionary origin of some gestures can be traced to our primitive animal past. Baring the teeth is derived from the act of attacking and is still used by modern man in the form of a sneer and other such hostile gestures, even though he will not attack with his teeth. Smiling was originally a threat gesture, but today it is done in conjunction with non-threatening gestures to show pleasure.
The shoulder shrug is also a good example of a universal gesture that is used to show that a person does not know or understand what you are talking about. It is a multiple gesture that has three main parts: exposed palms, hunched shoulders and raised brow.