(Bk Business) Carol Kinsey Goman Ph.D.-The Nonverbal Advantage_ Secrets and Science of Body Language at Work -Berrett-Koehler Publishers (2008)

Chapter 4: Face to Face
77
Bored, tired, or just
doesn’t want to
talk about it?
I once coached an executive
whose son had a behavioral problem.
This woman could successfully
lead an international organization, but
she couldn’t control her child. I began
to notice that whenever we discussed
the trouble her son was having—and
especially when we talked about her
role as a mother—she would inevitably
let out a yawn. It was her way of trying
to avoid the whole subject.
Tongue Flick
People stick out their tongues to lick their lips when under
stress or when thinking about a delicious meal. But there is
another gesture, where the tongue juts from between the
teeth without touching the lips. It happens very quickly and
reminds me of a snake flicking its tongue. And this gesture is
almost always a signal of deception.
I was in an automobile repair shop, and the mechanic
had just quoted me the “best possible price” to fix my car. He
then left the area to get a final okay from his manager. They
were behind a glass partition, so I couldn’t hear their conversation,
but I could see everything their bodies were saying.
And what I saw was my mechanic giving a quick but unmistakable
tongue flick as he finished talking with his boss.