Download 10-5 Infant Biosocial Development

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Transcript
First 2 Years
BiosocialDevelopment
Review
Germinal,embryonic,andfetalperiods
Teratogens:criticalperiod,threshold,interaction
Birthprocess
Body Changes
2xbirthweightat4months;3xat1year
Head‐sparing:braincontinuesgrowingevenwithinadequate
nutrition
Brain Development
Babies’brainsareHUGE!
Makingconnections
Neuronscommunicatethroughsynapses betweendendrites
andaxons
Transientexuberance: Increaseconnectionsincortex
Pruning:Unusedneuronsdie
Sensation & Perception
Experiencetheworld
throughsenses
Sensation:detecting
stimulus
Perception:brain’s
understandingofsensory
data
Motor Skills
Learninglikeaninfant
Fromnonconsciousreflexes topurposefulgross andfine
movements
Culturalvariationsinmotorskills
Public Health & Babies
Immunizationdebate
Concernoveralleged
relationtoautism
Retractedstudy,
“elaboratefraud”
Breast Milk: Holy Elixir
Breastmilkexactly
formulatedtomeet
infants’
developmentalneeds
Exclusivelybreast
milkfor4‐6months