why babies’ laughter sound very similar until they grow up and start laughing differently

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Im from Africa and anytime a baby laughs, its extremely similar to how other babies around me laugh. I also found out that other babies around the world seem to laugh in a very similar manner. However, when they all grow older, they begin to develop other laughing mannerisms (some even snort)

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Anonymous 0 Comments

Laughter is not an entirely automatic process, the way that, say, sneezing is. It involves active conscious thought similar to the use of language (Provine RR, Emmorey K. 2006).

In fact, if you take a group of Americans and a group of isolated Namibians (with little contact with Western culture), the two groups will have a hard time understanding the specific meaning of each other’s laughter, while they have a relatively easy time telling things like disgust or sadness. (Sauter DA, Eisner F, Ekman P, Scott SK. Cross-cultural recognition of basic emotions through nonverbal emotional vocalizations. Proc Natl Acad Sci U S A. 2010 Feb 9)

So laughter, like speech, is something which develops a cultural inflection. An accent, of sorts!

Edit: in case it’s not clear, the laughter in babies is a different *type* of laughter, a more-automatic one similar to the laughter that adults show when tickled. This is why it is similar in most babies, while adult laughter in response to humor can sound very different from person to person.

Anonymous 0 Comments

babies haven’t developed long enough for differences to become significantly noticeable for something such as laughter. the parts of your body that produce the sound of laughter (even if different) are not different enough to sound dissimilar to an adult. but, they are actually different.

Take something else as an example. An adult with size 12 shoes probably had very similar sized feet as a baby to someone who wears size 7 shoes as an adult.