Relatived Outsources

Words are 7% effective
Tone of voice is 38% effective
Non-verbal clues are 55% effective.
Non-verbal clues (body language, emotion, and other connections such as similarities or differences between people)
“WHAT you say is not nearly as important as HOW you say it!”

From the website: http://www.itstime.com/aug97.htm

From the website: http://webapp.walgreens.com/cePharmacy/programsHTML/IBAcritical.html

From the website:
http://univ.nict.go.jp/past_pj/social/research_fields/non_verbal_eng.html