The physiological process of listening is invisible to the observer. We cannot watch the sound vibrations go into someone’s ears to confirm that they received the intended message. Consequently, the speaker is always on the lookout for cues to validate receipt of the message. Visual cues, which offer the easiest form of feedback, let the speaker know you are paying attention. Facial expressions, head nods, and positive body language are clear ways of expressing interest in your conversation partner’s words.
