Lecture 9 Fall 2011 9-29 - Nature, Nurture, and Human...

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Nature, Nurture, and Human Diversity 0% Chapter 4
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Nature, Nurture, and Human Diversity Parents and Peers Parents and Early Experiences
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Whether early environment is impoverished or enriched has a major impact on brain development: Rosenzweig and Krech found that rats raised in an enriched environment developed a larger, and thicker, cortex than rats raised in an impoverished environment. Experience and Brain Development
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A trained brain: A well-learned finger- tapping task, practiced thousands of times, activates more motor cortex neurons (in orange) than were active in the same brain before training. Experience and Brain Development
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This same sort of brain plasticity is seen in humans. In one study, researchers found that London taxi cab drivers had larger hippocampal brain regions responsible for spatial memory than did controls. Credit: Andreas Tusche Experience and Brain Development http://news.bbc.co.uk/olmedia/675000/video/_676133_christine_mcgourty6am_vi.ram http://news.bbc.co.uk/olmedia/675000/audio/_677048_wax.ram
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How Much Credit (or Blame) Do Parents Deserve? Parents do matter, especially at extremes. For example, abused children are prone to abuse their own children as adults. Somewhat surprisingly, however, shared environmental influences on personality and intelligence are fairly small (around 10%).
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This note was uploaded on 10/18/2011 for the course PSYCHOLOGY 101 taught by Professor Caldwell during the Fall '10 term at Michigan State University.

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Lecture 9 Fall 2011 9-29 - Nature, Nurture, and Human...

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