Much of the way we express ourselves is through non-verbal behaviours, or body language. We pick up on the way people are feeling by the signals they give, often unconsciously. Body language includes:
Kinesics or body movement - - - hand gestures help emphasise or dismiss a point, the tilt of the head an indication of interest, nodding can mean agreement, hands on hips may signify aggression.
Posture -- how we stand or sit. Good posture is indicative of confidence and authority. Poor posture suggests insecurity.
Voice -- the pitch, tone and speed; hesitations, pauses and emphasis on particular words imply question, command, authority or uncertainty.
Facial expressions -- give strong clues to a person's emotional state, especially if caught off guard. Blinking may mean nervousness or embarrassment, frowning suggests thoughtfulness or anger and a smile is an indication of confidence.
Eye contact -- the amount of eye contact often determines a level of trust or trustworthiness. Avoiding eye contact may mean distrust, embarrassment or insecurity.
Personal space -- determines the level of intimacy.