Also see Embodied Cognition
Albert Mehrabian’s 7-38-55 Communication model says that 7% of the meaning of feelings and attitudes takes place through the words we use in spoken communications, while 38% takes place through tone and voice and the remaining 55% of communication of these factors take place through the body language we use (specifically our facial expressions).
Diagram not reproduced here (rights reserved) — see it at people-shift.com ↗