Thahir Noorul Isra is a rehabilitation counsellor and trainer of palliative care in India. He provides the following summary points about nonverbal communication:
1. Facial expressions can convey many feelings like happiness, sadness, anger, and confusion.
2. Body language like posture, gestures, eye contact, and personal space can also communicate emotions and attitudes.
3. Paralanguage features such as tone, pace, volume and vocal qualities further supplement verbal messages.