test PostWritten By Darren Tay, World Champion of Public SpeakingFounder of Public Speaking Academy♦1:23 PM SGT ♦ Sat, July 6, 2019The X-factors are: Words, Voice, Body Language. This is based on several studies in the 1970s, conducted by Prof. Albert Mehrabian.Related ArticlesThe ONE Thing That Can Change Your Speaking Confidence LevelThe First 15mins of Your PresentationThe 3 Things You Should Completely Avoid Doing Before Speaking In Front Of A Crowd or Group← Back to All Posts