exam 1 review pt. 3 - Chapter 3 Review Nature Nurture and...

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Chapter 3- Review Nature, Nurture and Human Diversity Behavior Genetics: Prediction Individual Differences Behavior Genetics: the study of the relative power and limits of genetic and environmental influences on behavior Genes: our code for life Chromosome: Threadlike structures made of DNA molecules that contain the genes. Twin and Adoption Studies Identical twins: twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms. Fraternal Twins: twins who develop from separate fertilized eggs. They are genetically no closer than brothers and sisters, but they share a fetal environment. -Used to scientifically separate the influences on environment and heredity -In adoption studies, their personality differences, intellgences and even heart rate and brain waves can be measures. Biological VS Adoptive Relatives. -Finding whether children are more like their biological families or their adoptive families. -Environment seems to have no effect on personality. Does influence their attitudes, values, manners, faith and politics Temperament and Heredity Temperament: a person’s characteristic emotion reactivity and intensity. -Heredity may predispose temperament differences. Nature and Nurture -The behavioral hallmark of our species is our enormous adaptive capacity. -Both genes and environment impact our personality Gene-Environment Interaction. -Environments trigger gene activity. -Our genetically influences trains evoke significant responses in others Interaction: the effect of one factor (such an environment) depends on another factor (such as heredity) Evolutionary Psychology: Understanding Human Nature Evolutionary psychology: the study of the evolution of behavior and the mind, using principles of natural selection. Natural selection: The principle that, amoung the range of inherited train variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations Mutation: a random error in gene replication that leads to a change.
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