- Nonverbal messages and the biochemistry of the body in relation to movements.
- Classification of gestures.
- Psychological coordinates.
- Posture and gestures as a source of information.Distance in business communication.
- Paralanguage (paralinguistics). Determining nonverbal elements such as the strength and pitch of the voice, rhythm, intonation, and accents.
- Proxemics (Spatial behaviour).
- Visual contact.
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