In studies conducted in Papua New Guinea, Paul Ekman, the world's most renowned researcher on facial expressions, found that even members of the Fore tribe, who were completely disconnected from Western culture, and also known for their unusual cannibalism rituals, (Laughter) attributed smiles to descriptions of situations the same way you and I would.
Pētījumos, kas veikti Papua Jaungvinejā, Pols Ekmans, pasaulē atzītākais  sejas izteiksmju pētnieks, atklāja, ka pat fore cilts locekļi, kas ir pilnīgi nesaistīti  ar Rietumu kultūru, kā arī pazīstami savu  neparasto kanibālisma rituālu dēļ, saistīja smaidu ar tādām pašām situācijām, kā to darītu jūs un es.