Chapter 4B (Genetics) & Chapter 5A (Sensation 7 Perception) - Thursday October 15 2009

Chapter 4B (Genetics) & Chapter 5A (Sensation 7 Perception) - Thursday October 15 2009

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Psychology 1000 Chapter 4: Genetics and Behavior Chapter 5: Sensation & Perception October 15, 2009 EXAM: Saturday Oct 24, 9-11am Exam room locations on WebCT Sample exam questions Q: For males and individuals who are right handed, language is primarily localized in the A: Left temporal lobe Q: The gland in the endocrine system that is referred to as the “master gland” because it regulates growth and the other glands is the A: Pituitary ______________________________________________________________________ Chapter 4 : Genes, evolution and behavior Behavioral genetic techniques Studying genetic influences on behavior Twins studies :Compare identical twins (100%) identical genes to fraternal twins (50% shared genes) But, identical twins may be treated differently from fraternal twins. Adoption studies : compare children to adopted parents (nurture) and biological parent (nature) Heritability coefficient : the degree to which variability in a particular characteristic can be attributed to genetics *High concordance (co-occurrence) suggests high genetic influence Intelligence: impacted by both heredity and the environment Support for:
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Genetic contribution – identical twins higher than non-twin siblings Environmental contribution - identical twins not 100% concordance Twins and siblings raised together more similar than those raised apart Genetic –environmental interactions Reaction range - genetic influence a range (upper and lower limits) environmental factor influence where in this range the individual will fall Evolutionary personality (Buss, 1999) A limited number of personality traits have evolved to ensure the survival and reproductive success of the species Extraversion and emotional stability -Facilitate dominance and mate acquisition Conscientiousness and agreeableness -Foster group survival Openness to experience -Facilitates creativity and problem-solving Research: same basic universal traits across cultures, but heritability range from .28-.36 or these traits implying environmental effect as well Natural selection (Charles Darwin) The evolutionary process by which characteristic that increase the likelihood of survival are adaptation allow organisms to meet changing environmental demand and ensure survival A) species-through evolution B) individual –through interaction with the environment Human Evolution: Bipedalism, tool use, and language Evolution psychology : A field of study that focuses on the role of evolutionary procuresses (esp. natural selection) in the development of adaptive psychological mechanisms and social behaviors in human Adaptive behavior
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