Nature for BB

Nature for BB - Nature: BehavioralGeneticsand...

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Nature: Behavioral Genetics and  Evolutionary Psychology Module 11
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Who are we??
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Who are we? v Similarities and differences— Ø From person to person? Ø From group to group? Ø From time to time? Ø From species to species?
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Origins of human thought and behavior v Psychology’s biggest question: How much of who we are comes from our innate genetic endowment and how much comes from our environment? v Inborn? Ø Socrates, Plato, Descartes v Experience? Ø Bacon, Hume, Locke’s tabula rasa
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Behavior Genetics v Behavior Geneticists  try to measure the  relative effects of heredity and environment. v Environment :  Every non-genetic influence  on human development Ø Prenatal environment—hormones, nutrition Ø Family environment Ø Socio-cultural environment Ø Historic context
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Genes v Chromosomes: strands of DNA Ø Present in every cell nucleus Ø In humans, 23 pairs—one of each pair from each parent v Genes : DNA segments (30,000 in humans) that synthesize proteins. v Genes can be turned on or off by environment.
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Genome v The  genome  is the entire set of genes that together  make up the complete set of instructions for  making an organism.  Ø 99.9% of genes are identical across humans. Ø 96-99% of genes identical between humans and  chimps. Ø 70% identical between humans and sea sponges!  v What do those genetic similarities and differences  actually mean?? v Psychological traits influenced by many genes, all  interacting with environment.
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Twin Biology How can we separate the effects of genes from the  effects of environment?
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This note was uploaded on 12/21/2011 for the course PSYCH 102 taught by Professor Jared during the Spring '07 term at Rutgers.

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Nature for BB - Nature: BehavioralGeneticsand...

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