1. (nonverbal leakage) In nonverbal communication, unconscious ‘expressions’ which Goffman referred to as ‘given off’ through nonverbal cues (and potentially noticeable to others).
2. (nonverbal leakage) The unconscious display of deception through such cues. Psychologists Ekman and Wallace Friesen argue that deceivers attempt to control their behaviour, but that generalized arousal is often unwittingly exhibited through nonverbal cues. The verbal channel is the most controllable, followed by facial cues; body cues (e.g. clenched hands) and vocal cues (e.g. a shaky voice) are the most likely to reveal deception.
3. In psychoanalytic theory, the notion that repressed thoughts and feelings may be revealed though dreams and slips of the tongue: seeparapraxis.