ELI5 Are facial expressions and reactions like laughing learned, or do all humans do it? Submitted by David1192 t3_10inpk1 on January 22, 2023 at 4:34 PM in explainlikeimfive 11 comments 13
Tanagrabelle t1_j5fjvv9 wrote on January 22, 2023 at 5:33 PM 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. Permalink 4
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