An evolutionary model of crying requires consideration of non-human primate data. Chimpanzees do not have colic. Although they have a peak of fussiness at 6 weeks with a decline by 12 weeks whether raised by biological mothers or in a human nursery, their crying is always consolable. Colic may be a by-product of delayed rates of brain development; that is, neoteny.
|Number of pages||1|
|Journal||Behavioral and Brain Sciences|
|Publication status||Published - 1 Aug 2004|