FRHD 1010 Lecture : Human Devel Class Notes
9 Feb 2012
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High portion of sleep in rem (rapid eye movement) sleep, adults only get 20% rem, neonates get 50% Crying y verge/crying: 2-3 hours a day y cry x culture: hunter-gatherers (sling) y colic: 3 hours a day/3 days/3 weeks: otherwise normal baby, unable to sooth. Infants are in sling-back with mothers so swaddled: sleep more, more comfortable, at night sleep with mother, so able to feed during night, first year about 3 hr periods. Americans y @ 8 months american babies sleep for about 8 hours y sleep in separate room. Disease protection: antibodies et al. that builds infant s immune system. Less illness, diseases such as ear infections, diarrhea, asthma. Cognitive dev t nutrients promote early brain development esp. preterm/low birth weight infants. Triggers release of hormone oxytocin in mothers, decreases bleeding in uterus, causing uterus to return to its original size. Less likely to get pregnant shortly after giving birth.
