3 ms·
Smiling is fundamental. Fetuses have been observed smiling in the womb. In ethology, I think it's considered what's called a fixed action pattern, it is basical
by leguman_ac 9y ago
Smiling is fundamental. Fetuses have been observed smiling in the womb. In ethology, I think it's considered what's called a fixed action pattern, it is basically hard-wired in us. But of course, the environment and culture modifies this behavior and its meaning.
- watwut 9y agoAngry face is fundamental too, babies look angry too, but we don't expect anyone to looks constantly angry.