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03-行为的天性与教养.ppt
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    Myers' PSYCHOLOGY

    Chapter 3

    Nature, Nurture and

    Human Diversity

    Genes: Our Biological Blueprint

    * Chromosomes

    * threadlike structures made of DNA that contain the genes

    * DNA (deoxyribonucleic acid)

    * complex molecule containing the genetic information that makes up the chromosomes

    * has two strands-forming a "double helix"--held together by bonds between pairs of nucleotides

    Genes: Our Biological Blueprint

    * Genes

    * biochemical units of heredity that make up the chromosomes

    * a segment of DNA capable of synthesizing a protein

    * Genome

    * the complete instructions for making an organism

    * consisting of all the genetic material in its chromosomes

    Genes: Their Location and Composition

    Evolutionary Psychology

    * Natural Selection

    * the principle that, among the range of inherited trait variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations

    * Mutations

    * random errors in gene replication that lead to a change in the sequence of nucleotides

    * the source of all genetic diversity

    Evolutionary Psychology

    * Evolutionary Psychology

    * the study of the evolution of behavior and the mind, using the principles of natural selection

    * Gender

    * in psychology, the characteristics, whether biologically or socially influenced, by which people define male and female

    Evolutionary Psychology

    * Men preferred attractive physical features suggesting youth and health

    * Women preferred resources and social status

    Behavior Genetics

    * Behavior Genetics

    * study of the relative power and limits of genetic and environmental influences on behavior

    * Environment

    * every nongenetic influence, from prenatal nutrition to the people and things around us

    Behavior Genetics

    * Identical Twins

    * develop from a single fertilized egg that splits in two, creating two genetically identical organisms

    * Fraternal Twins

    * develop from separate eggs

    * genetically no closer than brothers and sisters, but they share the fetal environment

    Behavior Genetics

    * Temperament

    * a person's characteristic emotional reactivity and intensity

    * Heritability

    * the proportion of variation among individuals that we can attribute to genes

    * may vary, depending on the range of populations and environments studied

    Behavior Genetics

    * Interaction

    * the dependence of the effect of one factor (such as environment) on another factor (such as heredity)

    * Molecular Genetics

    * the subfield of biology that studies the molecular structure and function of genes

    Environmental Influence

    * Two placental arrangements in identical twins

    Environmental Influence

    * Experience affects brain development

    Environmental Influence

    * A trained brain

    Environmental Influence

    * Culture

    * the enduring behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next

    * Norm

    * an understood rule for accepted and expected behavior

    Environmental Influence

    * Personal Space

    * the buffer zone we like to maintain around our bodies

    * Memes

    * self-replicating ideas, fashions, and innovations passed from person to person

    The Nature and Nurture of Gender

    * X Chromosome

    * the sex chromosome found in both men and women

    * females have two; males have one

    * an X chromosome from each parent produces a female child

    * Y Chromosome

    * the sex chromosome found only in men

    * when paired with an X chromosome from the mother, it produces a male child

    The Nature and Nurture of Gender

    * Testosterone

    * the most important of the male sex hormones

    * both males and females have it

    * additional testosterone in males stimulates

    * growth of male sex organs in the fetus

    * development of male sex characteristics during puberty

    * Role

    * a set of expectations (norms) about a social position

    * defining how those in the position ought to behave

    The Nature and Nurture of Gender

    * Gender Role

    * a set of expected behaviors for males and females

    * Gender Identity

    * one's sense of being male or female

    * Gender-typing

    * the acquisition of a traditional masculine or feminine role

    The Nature and Nurture of Gender

    * Gender and Culture

    The Nature and Nurture of Gender

    The Nature and Nurture of Gender

    * Social Learning Theory

    * theory that we learn social behavior by observing and imitating and by being rewarded or punished

    * Gender Schema Theory

    * theory that children learn from their cultures a concept of what it means to be male and female and that they adjust their behavior accordingly

    The Nature and Nurture of Gender

    * Two theories of gender typing