It is necessary to ensure that there are cultural similarities.
To support their argument that emotional perception is culturally universal, researchers need to ensure that the study participants are associating the facial expressions in the same way as from other countries. Participants also need to be able to recognise the same set of cues in order to understand signals with respect to specific expressions.
However, it was noted that people used a variety of cues, depending on their surroundings, to recognise their feelings. The mouth, along with the brows, was found to be the most important Cue for Westerners. It was also expressed that eye expressions were more accurate for identifying easterners.
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