非言語コミュニケーション
Nonverbal communication presents a fascinating study of speech intonation, facial expression, bodily motions and person-to-person physical contacts. Some other forms of nonverbal communication include how far people position themselves in relation to each other, posture and appearance. These forms of expression can convey messages related to emotion as well as opinions, physical states (fatigue), and understanding. Emotional expression is especially linked to the production of emotion-specific facial expressions. These expressions are often the same from culture to culture and are often reproduced by observers, which facilitates the observers' own understanding of the emotion and/or situation. There are six universal emotions: happiness, sadness, fear, surprise, disgust and anger.