One of the most important ways that we learn how to interact with the world around us is through observational learning. By watching how our friends and family members behave, we learn at a very young age how to do things like turn on a lightbulb, open a door, or play with a doll, without the tedious trial-by-error reinforcement process that would be required if we only learned things through classic behaviorism. With this in mind, it’s only natural to assume that we have learned when to smile politely, wrinkle our noses in disgust, or furrow our brows in anger by watching the people around us react in those ways when presented with similar situations.
But what if observational learning isn’t the only way in which we figure out how to express our emotions? What if those emotional expressions — or at least, some of those expressions — actually come “pre-programmed” into our very nature, and we would make those grimaces, brow-furrows, and polite smiles of thinly-veiled contempt without ever seeing other people make these expressions first?