Module 6 - Module 6 Environmental Influence on Behavior...

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Module 6: Environmental Influence on Behavior & Reflection on Nature & Nurture I How Much Credit (or Blame) Do Parents Deserve? 1 Parental handling has limited influence on children’s personalities 2 Shared environmental influences typically account for less than 10% of children’s personality differences B. Prenatal Environment 1 “nurture” begins in womb embryos receive differing nutrition and varying levels of exposure to toxic agents 2 identical twins may not receive identical prenatal nurture C. Experience and Brain Development 1 Experience helps develop brain’s neural connections 2 Even if forgotten, early learning helps prepare brains for thought & language & for later experiences 3 Rosenzweig & Krech reared young rats in solitary confinement & others in communal playground a When brains analyzed, rats who died with most toys won b Those living in enriched environment which stimulated natural environs developed heavier & thicker brain cortex 4 Brains development doesn’t end in childhood
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