Behavioral Genetics Overview
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Questions and Answers

What is a key distinction between genotype and phenotype?

  • Genotype is inherited from only one parent; phenotype is inherited from both.
  • Genotype is observable; phenotype is genetic.
  • Genotype is influenced by environmental factors; phenotype is not.
  • Genotype refers to genetic profile; phenotype includes observable traits. (correct)
  • What are alleles in the context of genetics?

  • Basic units of heredity that cannot vary.
  • Segments of DNA that are identical in all individuals.
  • Different forms of a gene that can produce various traits. (correct)
  • The total number of chromosomes in an organism.
  • How many chromosomes do humans possess in total?

  • 23 chromosomes, with no pairs involved.
  • 46 chromosomes, or 23 pairs, derived from parents. (correct)
  • 23 pairs, totaling 48 chromosomes.
  • 44 chromosomes, based on the absence of sex chromosomes.
  • In the dual track mind model, what best describes the unconscious mind?

    <p>It influences behavior without our awareness.</p> Signup and view all the answers

    What does epigenetics study?

    <p>Heritable changes caused by gene activation or deactivation</p> Signup and view all the answers

    Which domain of development involves the improvement of thinking and reasoning skills?

    <p>Cognitive Development</p> Signup and view all the answers

    Which factor can influence gene expression in organisms?

    <p>Environmental changes and mother-infant interactions</p> Signup and view all the answers

    What is a fundamental issue in developmental psychology regarding the nature of development?

    <p>Is development primarily a result of nature or nurture?</p> Signup and view all the answers

    What can early childhood trauma potentially lead to later in life?

    <p>Disorders and emotional difficulties</p> Signup and view all the answers

    What characteristic defines sex-linked traits?

    <p>Traits controlled by genes on the X chromosome</p> Signup and view all the answers

    How do females inherit sex-linked traits compared to males?

    <p>Females can be carriers without expressing the trait</p> Signup and view all the answers

    Which design is used to investigate genetic influences through family connections?

    <p>Family studies</p> Signup and view all the answers

    What is the primary focus of collectivist cultures?

    <p>Shared responsibilities and group welfare</p> Signup and view all the answers

    What is the genetic relationship between monozygotic twins?

    <p>They share 100% of their genes</p> Signup and view all the answers

    Which parenting style is characterized by strict rules and severe punishments?

    <p>Authoritarian Parenting</p> Signup and view all the answers

    What is the main characteristic of permissive parenting?

    <p>No rules or boundaries</p> Signup and view all the answers

    Which temperament type is most likely to form a secure attachment?

    <p>Easy temperament</p> Signup and view all the answers

    Which parenting style is known as the best approach for fostering secure attachment?

    <p>Authoritative Parenting</p> Signup and view all the answers

    According to Erikson's theory, what do each of the eight stages involve?

    <p>Crisis needing resolution</p> Signup and view all the answers

    Which type of child exhibits irregular sleeping and eating habits and struggles with adapting to changes?

    <p>Difficult temperament</p> Signup and view all the answers

    Which response is typically associated with children who are classified as 'slow to warm up'?

    <p>Difficult at first but eventually adjusts</p> Signup and view all the answers

    What aspect does Erikson emphasize is essential for survival in human development?

    <p>Development of social relationships</p> Signup and view all the answers

    What is the primary focus of the embryonic period?

    <p>Foundation laying of systems and organs</p> Signup and view all the answers

    What are teratogens?

    <p>Agents causing harm to the embryo or fetus</p> Signup and view all the answers

    At what age do infants typically show adult-like vision?

    <p>3 months</p> Signup and view all the answers

    What is the primary purpose of reflex behaviors in newborns?

    <p>To provide automatic survival responses</p> Signup and view all the answers

    Which of the following describes Piaget's process of assimilation?

    <p>Fitting new information into existing schemas</p> Signup and view all the answers

    What characteristic is predominant in the preoperational stage according to Piaget?

    <p>The emergence of symbolic thought</p> Signup and view all the answers

    What is the significance of the zone of proximal development in Vygotsky's theory?

    <p>It identifies the potential for learning with assistance.</p> Signup and view all the answers

    What milestone is achieved during the sensorimotor stage?

    <p>Understanding object permanence</p> Signup and view all the answers

    What does the concept of 'maturation' refer to in child development?

    <p>Biological growth processes enabling orderly changes</p> Signup and view all the answers

    What is the main focus of the concrete operational stage?

    <p>Conservation and logical reasoning</p> Signup and view all the answers

    What does 'theory of mind' allow a child to do?

    <p>Infer mental states of themselves and others</p> Signup and view all the answers

    What happens during the fetal period of development?

    <p>Rapid development of systems and organs takes place</p> Signup and view all the answers

    What is a common effect of Fetal Alcohol Syndrome?

    <p>Delayed growth and intellectual disabilities</p> Signup and view all the answers

    When do infants generally start to hear sounds?

    <p>After 7 months of conception</p> Signup and view all the answers

    What is the primary focus of Kohlberg's moral development stages?

    <p>The reasoning behind moral decisions</p> Signup and view all the answers

    Which stage of moral development is characterized by guiding actions through self-interest?

    <p>Preconventional Morality</p> Signup and view all the answers

    How did Carol Gilligan critique Kohlberg's theory?

    <p>It was biased towards Western cultures.</p> Signup and view all the answers

    What is an example of a teratogen?

    <p>Rubella virus</p> Signup and view all the answers

    At what age does the sensorimotor stage of development typically occur?

    <p>Birth to 2 years</p> Signup and view all the answers

    What does 'object permanence' refer to in cognitive development?

    <p>Knowledge that objects exist even when unseen</p> Signup and view all the answers

    Which of the following is a characteristic of the concrete operational stage?

    <p>Logical thinking about concrete events</p> Signup and view all the answers

    What approach does Carol Gilligan’s Ethics of Care emphasize?

    <p>Nonviolence and minimizing harm</p> Signup and view all the answers

    Which term describes the emotional bond usually formed between a child and caregiver?

    <p>Attachment</p> Signup and view all the answers

    What concept refers to a limited time frame for certain skills or attachments to develop?

    <p>Critical Period</p> Signup and view all the answers

    Which stage follows the formal operational stage in cognitive development as per Piaget?

    <p>Postformal Stage</p> Signup and view all the answers

    What does 'habituation' refer to in developmental psychology?

    <p>Decreased response after repeated exposure</p> Signup and view all the answers

    What is the primary focus of 'identity' in developmental psychology?

    <p>The sense of self including values and beliefs</p> Signup and view all the answers

    What does 'emerging adulthood' typically refer to?

    <p>Late teens to mid-20s age range</p> Signup and view all the answers

    Study Notes

    Behavioral Genetics

    • Dual-track mind: unconscious mind (below awareness) influences behavior and decisions, conscious mind (awareness) also affects behavior.
    • Behavioral genetics studies the link between genetics and behavior.
    • Nature vs. Nurture:
      • Genotype: an individual's genetic profile
      • Phenotype: observable characteristics
    • Genetics:
      • Humans have 23 pairs of chromosomes (46 total)
      • Chromosomes are long strands of DNA
      • Last two chromosomes are sex chromosomes: XX (female), XY (male)
      • Genes are segments of chromosomes, basic units of heredity that contain protein-making instructions.
      • Alleles: different versions of a gene, causing variations.
      • Dominant vs. recessive alleles influence traits.
      • Sex-linked traits are controlled by genes on the X chromosome, males have only one X so affected more than females.
    • Environmental Influences:
      • Parents are influential during childhood.
      • Peers become more influential during adolescence.
      • Culture shapes behaviors, ideas, attitudes, values, and traditions.

    Twin Studies & Adoption Studies

    • Twin studies: compare concordance rates (likelihood of both twins having a trait if one has it) between identical (MZ) and fraternal (DZ) twins.
      • Identical twins share 100% of their genes, fraternal twins share 50%.
    • Adoption studies: compare traits between adopted children and their biological versus adoptive parents to determine genetic/environmental influences.
    • Epigenetic influences: Changes in gene expression without altering DNA sequence (e.g., effects of a mother rat licking her pups on gene expression in the offspring).

    Development Psychology

    • Domains of development:
      • Physical (body, brain, motor skills, and sensory abilities).
      • Cognitive (thinking, perception, reasoning).
      • Socio-emotional (emotional bonds, personality).
    • Fundamental issues in development: nature vs. nurture, is development continuous or in stages, sensitive periods?
    • Prenatal development:
      • Zygote: fertilized egg
      • Germinal period (first two weeks): conception to implantation.
      • Embryonic period (3-8 weeks): cell differentiation, organ formation.
      • Fetal period (9 weeks to birth): continued growth, refinement of systems.
    • Developmental psychology studies change from conception to death.
    • Types of study designs in Dev. Psych.: Longitudinal, cross-sectional, and cross-sequential.

    Newborn Abilities

    • Newborn mental abilities: demonstrate basic learning (habituation), sensory capacities (vision, auditory, touch).
    • Newborn motor abilities: have reflexes vital for survival (e.g., rooting reflex)

    Physical Development

    • Maturation drives physical development, alongside sensitive periods when skill acquisition is influenced.
    • Brain development, myelination improves thinking and movement.

    Cognitive Development

    • Piaget's theory: stages of cognitive development:
      • Sensorimotor (birth-2 years): object permanence.
      • Preoperational (2-7 years): egocentrism, symbolic thinking, lack of conservation of volume.
      • Concrete operational (7-12 years): logical reasoning, conservation ability.
      • Formal operational (12+ years): abstract reasoning, problem-solving.
    • Assimilation: interpreting new experiences in terms of existing schemas.
    • Accommodation: adjusting schemas to fit new experiences.

    Adolescent Development

    • Adolescent egocentrism: feeling that everyone is judging you, personal fable.
    • Identity formation: a crucial part of adolescence, involves exploring and solidifying a personal identity.
    • Erikson's theory of psychosocial development: stages of psychosocial development
      • Trust vs. Mistrust (0-1): basic trust in caregivers.
      • Autonomy vs. Shame & Doubt (1-3): developing independence.
      • Initiative vs. Guilt (3-5): initiating activities and taking initiative.
      • Industry vs. Inferiority (6-12): learning skills and comparing themselves with peers.
      • Identity vs. Confusion (12-18): exploring identity and values.
      • Intimacy vs. Isolation (18-40s): forming close relationships.
      • Generativity vs. Stagnation (40-65): focusing on contributions to society.
      • Integrity vs. Despair (65+): reflecting on life.

    Moral Development

    • Kohlberg's theory: stages of moral reasoning, preconventional, conventional, postconventional.
    • Carol Gilligan's critique: proposed differing perspectives of moral reasoning in women.

    Types of Parenting Styles

    • Diana Baumrind's three parenting styles: authoritarian, permissive, authoritative. Authoritative parenting generally leads to secure attachment.

    Temperament

    • Temperament: individual differences in behavioral styles and intensity.

    Attachment

    • Attachment: strong emotional bond between infants and caregivers.
    • Secure attachment, insecure-avoidant, insecure-resistant attachment.
    • Separation anxiety, stranger anxiety. Factors affecting attachment include parenting style and child temperament.

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    Description

    Explore the fascinating field of behavioral genetics, focusing on how genetics and environment shape behavior and decisions. Understand the concepts of genotype and phenotype, as well as the roles of chromosomes and alleles in influencing traits. This quiz will delve into the nature vs. nurture debate and the impact of parental and peer influences.

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