The human power of observation is quite limited. People generally see what they expect to see. Here’s an interesting experiment that Daniel Levin created to show how poor our skills of real observation can be.
A term coined by Theodore Schick, Jr. and Lewis Vaughn to describe what some people mistakenly call intuition (1998: 116). A person with HSP is very observant and perceptive, and may appear to be psychic. Some mentalists either have HSP or use magic to appear to have it, e.g. Banacheck, Richard Pierce and Marc Salem. The hypersensitive may be adept at reading body language or simply be more attentive to detail than most people. He or she may pick up subtle behavioral cues, cues that are unconsciously given. He or she may be very sensitive to facial clues that reveal emotions. Nonverbal influence can be quite profound and has been demonstrated in a number of psychological experiments (Rosenthal 1998).
Jo Ellen Demetrius Reads Body Language
Great example by skilled Hypnotist James Rolph