Psych_Outline_Chapter 3

Psych_Outline_Chapter 3 - Psychology Chapter 3: Nature,...

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Psychology Chapter 3: Nature, Nurture and Human Diversity Behavior Genetics 1) Behavior genetics-  study of relative power and limits of genetic and environmental  influences on behavior. 2) Genes-  small segments of DNA capable of synthesizing a protein; biochemical units of  heredity. a) Provides the code for creating protein molecules (building blocks of physical  development) b) Genes make up DNA which makes up chromosomes c) 99.9% of DNA is shared among all humans, but w/ slight person-to-person  variations  d) Genetic predispositions help explain both shared human nature and human  diversity. 3) Twins used to disentangle threads of heredity and genetics a) Identical twins-  develop from single fertilized egg that splits in two are  genetically identical i) More similar w/ extraversion and neuroticism that fraternal ii) Identical twins whose parents treated them alike were not psychologically  more alike than identical twins who were treated less alike. iii) More similar temperaments than fraternal, suggests that heredity may  predispose temperament  b) Fraternal twins-  develop from separate fertilized eggs  4) Adoption a) People who grow up together (biologically related or not) do not much resemble  each other in personality. i)
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This note was uploaded on 04/19/2008 for the course PSY 1001 taught by Professor Waddell during the Fall '08 term at Villanova.

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Psych_Outline_Chapter 3 - Psychology Chapter 3: Nature,...

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