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Chapter 3 - adopted parents(environmental • Twin studies...

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Chapter 3: The Biological and Evolutionary Bases of Behavior Causal Explanations in Psyc Nature vs. Nurture Heredity vs. Environment Do we inherit our traits or are we a product of our environment Natural Selection Darwin Favorable adaptations to features of the environment allow some members of species to reproduce more successfully than others Due to living conditions species may adapt to survive better Genotype Genetic structure inherited from parents Phenotype Observable characteristic Human Evolution Bipedalism o The ability to walk upright Encephalization o Increase in brain size Language o Ability to communicate Chromosomes o Contain DNA DNA o Physical basis for the transmission of genetic information o Aka Genes Human Behavior Evaluates the link between inheritance and behavior o Measured from 0-1 0 means probably environmental 1 means probably genetic Adoption studies o Are the children closer to their birth parents (genetic) or
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Unformatted text preview: adopted parents (environmental) • Twin studies o How much more alike are identical twins? Sociobiology • The study of behavior and social systems of humans and other species from a social context • Evolutionary explanations for social behavior Evolutionary Psychology • The study of behavior and the mind using the principles of evolutionary theory • Cognitive processes o Aka psyc processes Ways to examine the Brain • Repetitive Transcranial Magnetic Stimulation o rTMS o Pulses of magnetic stimulation create temporary reversible lesions with out damage to the issue in order to briefly inactive the brain for study • Electroencephalogram o EEG o Electrical brain activity • PET Scan o Records radioactivity emitted by cells during cognitive and behavioral activity • Magnetic Resonance Imaging o MRI o Scans the brain using magnetic field o fMRI detects magnetic changes in blood flow in the brain...
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