Which method did Ekman use between the 1960s and the 1970s to study facial expression in remote cultures in Borneo and New Guinea?

Question

Quizplus · Accepted Answer

Ekman used the method of expression judgement, where he showed photographs of facial expressions to people from remote cultures in Borneo and New Guinea and asked them to identify the emotions being expressed. This allowed him to study cross-cultural similarities and differences in facial expression.

Which Method Did Ekman Use Between the 1960s and the 1970s