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Remarkable-Owl2034 t1_j5fbyux wrote

Babies smile, laugh and cry without being taught. It seems likely that these reactions are inborn and universal.

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LeviathanGank t1_j5gicij wrote

yup my baby laughs when having fun but also laughs like a mad man when we laugh, i think its both natural and copy mechanics..

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M8asonmiller t1_j5fo350 wrote

Blind people naturally smile and deaf people know how to laugh, so it's most likely that these are inherent behaviors, not learned.

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IAmXlxx t1_j5g020q wrote

Paul Ekman is a psychologist famous for his research on body language/nonverbal communication. He found that there are at least several "universal" emotions and corresponding facial expressions, like anger, sadness, joy, disgust, etc. However, there are thousands of expressions our facial muscles can produce, and it's probable that we learn at least a few of them from our environments and cultures.

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unparent t1_j5jkoe9 wrote

Came here to mention Ekman. I do CG facial animation for a living, and his work is one of the bibles of the craft. As a side effect, you learn too much about facial features and expressions, and you can read people through micro-expressions and subconscious communications which is a double edged sword. It's pretty dumbed down, but the show "Lie to Me" shows a lot of this.

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Tanagrabelle t1_j5fjvv9 wrote

The hardest part is to track down actual pictures, information, and footage of those who were raised from infancy by animals. I have this vague idea that, without reinforcement from human faces around them, the muscles for smiling will atrophy.

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ChillTBH t1_j5fvqj0 wrote

It's a mixture I think. There's a tribe which Malcolm gladwell talked about in his book talking to strangers which expressed themselves very differently facially to most in the west.

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Diogeneselcinico42 t1_j5goyt5 wrote

It's mostly genetic. Body language and facial expressions are largely programmed into our DNA and we are born with the knowledge of how to perform them and interpret them. This is unlike verbal language, which is 100% learned.

Have you ever noticed that no matter who the person is on this Earth, whether they be Chinese, African, Native American, European, etc, you can kind of tell if they are happy or sad from a picture or drawing without ever needing to learn anything about their language? This is pretty remarkable. We have a mechanism of communication amongst humans that is universal and belongs to us as a species.

Dogs and other social mammals also have body language cues they use to communicate with one another. You can look up a handbook of all the various dog body language meanings. Tail wagging indicates they are happy or anticipatory, raised teeth and ears back indicates aggression, etc.

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Jazzkidscoins t1_j5fuboi wrote

Gorillas laugh, they probably didn’t learn that from humans. However some facial expressions are learned. In India the way they move their heads when talking is almost a language in itself. These head movements can vary region to region.

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