In a recent mimicking study at the University of Clermont-Ferrand in France, subjects were asked to determine whether a smile was real or fake while holding a pencil in their mouth to repress smiling muscles.
I et nylig grimase-studie ved University of Clermont-Ferrand i Frankrike, ble forsøkspersoner spurt om å fastslå om et smil var ekte eller falskt mens de hadde en blyant i munnen for å dempe smile musklene.