From this evidence, scientists concluded that emotion recognition is universal: no matter where you are born or grow up, you should be able to recognize American-style facial expressions like those in the photos. The only way expressions could be universally recognized, the reasoning went, is if they are universally produced: thus, facial expressions must be reliable, diagnostic fingerprints of emotion.
I'm curious about the study design and how it could possibly have had any merit, since the Fore people would be already familiar with the researchers' expressions and it's ostensibly a test of interpreting the expressions in the researchers' culture
