Angela Chen, ‘Neuroscientist Lisa Feldman Barrett explains how emotions are made – We don’t all make the same expressions when we’re sad’,, The Verge, Vox Media (Apr 10, 2017)

Emotion concept

There’s not a single obligatory expression. And emotions aren’t some objective thing, they’re learned and something that our brains construct. (…) If you show a face on its own, versus if you pair it with a voice or a body posture or a scenario, the face is very ambiguous in its meaning. (…) People are using the context or their knowledge about that person to see more negativity in the face. (…) When you known an emotion concept, you can feel that emotion. In our culture we have “sadness,” in Tahitian culture they don’t have that. Instead they have a word whose closest translation would be “the kind of fatigue you feel when you have the flu.” (…) Emotion concepts — like sadness when something bad happens — are taught to children, not always explicitly. (…) It’s never going to be the case that it’s effortless and never the case that you can snap your fingers and just change how you feel.