Dr. David Matsumoto, Director of Humintell, is a world-renowned expert
in the fields of emotion, nonverbal behavior, deception, and culture. He
was a Professor of Psychology at San Francisco State University
for over 30 years, and was the Founder and Director of SFSU’s Culture
and Emotion Research Laboratory.
A nose scratch, a mouth cover, hand wringing, leg tapping, looking away when answering—over the years, different claims have been made about these and other nonverbal behavior as possible cues to deception. But what’s the truth?