Part 1 of Essay
All of us are trained in the use of speech, to communicate what we mean in a way that other people will understand. And most of the time, others understand what we mean. In a telephone conversation, we communicate through speech alone. In a face-to-face meeting, part of the communication is carried in a non-verbal form, wh ....

Part 2 of Essay
.... people in a room. You can't actually hear the presenter's voice, but he or she seems to be speaking clearly, is making eye contact with various people in the room, is emphasizing points using appropriate hand gestures, appears to be in command of the material, and exudes enthusiasm. Without even hearing what they are actually saying, your impression will be one of competence, sincerity; even leadership on the part of this presenter, and you will have made these determinations on the basis of body language alone. ....