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

70 The Nonverbal Advantage
from Afghan tribesmen to New York stockbrokers. (The only
people known to suppress this facial gesture are the Japanese.
They are perfectly capable of exchanging such a signal, but it
is considered improper.)
TRY THIS
Try catching the eye of a total stranger and quickly raising
both eyebrows. You’ll find that most people will either greet
you verbally or respond with an eyebrow lift of their own.
Other Eyebrow Signals
If someone is annoyed, his facial muscles draw the eyebrows
down and toward the center of the face. Lowering the eyebrows
is how humans show dominance or aggression toward
others.
Raising the eyebrows may be a sign of submission or a
request for approval. When someone is unsure about whether
he is believed or how an action is accepted, you commonly
see the eyebrows raise and pause—even if just momentarily.
This is an unspoken inquiry: “Did I get it right?” “What do
you think of what I just said?”
The gesture of raising the eyebrows slowly, over a few
seconds, along with a tilted head usually comes at the end
of a sentence as a nonverbal inquiry to see if the listener has
understood. And when the movement occurs even more
slowly, with a lift of the head, it can signal disapproval. Raising
one eyebrow, especially if accompanied by a slight smirk,
shows skepticism. But the ultimate dismissive signal is when
the eyebrows lift, the lips purse, and the head lowers and
turns slightly away.