During Marion Cotilliard's recent guest appearance on The Graham Norton Show, the accomplished actor was asked to lip sync a portion of Non, je ne regrette rien. Perhaps you were fooled into believing (as were many others) that she truly sang it during her Academy Award winning performance (Best Actress 2007) as Édith Piaf in La Vie en rose.
As she did not anticipate Norton's request (2:15 in the video above), Ms. Cotilliard felt unprepared and she responded with, "Oh shit". Immediately after this she reached up with her left hand and scratched the right side of her forehead.
This is an excellent example of a nonverbal signal for "Honest Anxiety". That is to say, when you see this body language displayed, you can be certain that the person doing so is feeling anxiety - and in addition, there's a very low probability they are attempting deception.
If Marion would have not reached across her forehead - and instead scratched on the same side, this would have indicated a relatively lower level of nervousness.
There are many different nonverbal displays indicative of honest anxiety. Can you name any others? How does one differentiate these from deception-related nervousness?
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