Midterm 1 Flashcards
Name and describe three developmental domains.
- Physical development.
- Cognitive development.
- Psychosocial development.
Describe the characteristics of “emerging adulthood”.
a transitional period between adolescence and full-fledged adulthood that extends from about age 18 to age 25 and maybe as late as 29.
a. explore their identities;
b. lead unstable lives filled with job changes, new relationships, and moves;
c. are self-focused, relatively free of obligations to others, and therefore free to focus on their own psychological needs;
d. feel in between—adultlike in some ways but not others;
e. believe they have limitless possibilities ahead.
What is an “age grade”? Give two examples of cultural or societal differences in age grades.
Each socially defined age group in a society is assigned different statuses, roles, privileges, and responsibilities.
- rite of passage (transition from child to adult)
- ??
Summarize the extreme positions one can take on the “nature–nurture” issue and the position taken by most developmental scientists today.
Nature: emphasize the influence of heredity, universal maturational processes guided by the genes, biologically based or innate predispositions produced by evolution, and biological influences on us every day of hormones, neurotransmitters, and other biochemicals.
Nurture: emphasize change in response to environment—all the external physical and social conditions, stimuli, and events that can affect us, from crowded living quarters and polluted air, to social interactions with family members, peers, and teachers, to the neighborhood and broader cultural context in which we develop.
In reality: Developmental changes are the products of a complex interplay between nature and nurture. It is not nature or nurture; it is nature and nurture (Plomin et al., 2013). To make matters more complex, it is nature affecting nurture and nurture affecting nature!
List and describe the goals driving the study of life-span development.
- Describing
- Predicting
- Explaining
- Optimizing development
(make sure you know what each of these are in detail)
List Baltes’ seven key assumptions or themes of the lifespan perspective. Development is …
- a lifelong process.
- multidirectional.
- both gain and loss.
- is characterized by lifelong plasticity
- shaped by its historical-cultural context
- multiply influenced
- must be studied by multiple disciplines
Describe the “heart” of the scientific method in one sentence.
Theories generate hypotheses, which are tested through observation of behavior, and new observations indicate which theories are worth keeping and which are not.
List three characteristics of a good theory.
- Internally consistent.
- Falsifiable
- Supported by data.
Describe the three critical features of true experiments.
- random assignment
- manipulation of the independent variable
- experimental control
What is the basic question for correlational designs?
“Are two or more variables are related in a systematic way?” Researchers take people as they are and attempt to determine whether there are relationships among their experiences, characteristics, and developmental outcomes.
What kind of conclusion can be drawn from research utilizing experimental method that cannot be drawn from research utilizing correlational method?
Experimental: manipulating the independent variable causes a change in the dependent variable.
Correlational: The strength and direction (+/-) of the relationship between two variables. Because this is a correlational study, we cannot draw firm cause-effect conclusions the way we can in an experiment.
Describe two rival interpretations that are possible for most correlational studies.
Directionality problem: the cause effect could be reverse
a third variable problem: the interaction between the two variables could be caused by a third variable they’re not seeing / measuring for
Describe the cross-sectional, longitudinal, and sequential designs and discuss the strengths and weaknesses of each.
Cross-sectional: the performances of people of different age groups, or cohorts, are compared.
Longitudinal: Strength: one cohort of individuals is assessed repeatedly over time. Strength: it can tell whether most people change in the same direction or whether different individuals travel different developmental paths.
Sequential: Strength: combines the cross-sectional approach and the longitudinal approach in a single study.
Discuss the strengths and weaknesses of cross-sectional, longitudinal, and sequential designs.
Cross-sectional: Strength: it’s quick and easy. Cross-sectional studies are very efficient and informative, especially when the cohorts studied are not widely different in age or formative experiences. Weakness: it can be misleading, and we don’t know how individuals change. You need longitudinal research for that.
Longitudinal: Strength: i t can tell whether most people change in the same direction or whether different individuals travel different developmental paths; indicate whether the characteristics and behaviors measured remain consistent over time; are extremely valuable for what they can reveal about how people change as they get older. Weakness: It is costly and time-consuming; its methods and measures may seem outdated or incomplete by the end of the study; its participants may drop out because they move, lose interest, or die; and participants may be affected by being tested repeatedly; Because of time-of-measurement effects, we may not know whether the age-related changes observed in a longitudinal study are generalizable to people developing in other sociohistorical contexts.
Sequential: Strength: In short, sequential designs can begin to untangle the effects of age, cohort, and time of measurement. Weakness: Yet they are complex and expensive.
What characteristics determine whether a research study is likely to be viewed as ethical?
If the potential benefits greatly outweigh the potential risks, and if there are no other, less risky procedures that could produce these same benefits, the investigation is likely to be viewed as ethical.
List and explain the four major ethical obligations of investigators to their research participants.
- allowing them to freely give their informed consent,
- debriefing them afterward if they are not told everything in advance or are deceived,
- protecting them from harm, and
- treating any information they provide as confidential.
Development
as systematic changes and continuities in the individual that occur between conception and death, or from “womb to tomb.”
reciprocal determinism
The notion in social cognitive theory that the flow of influence between people and their environments is a two-way street; the environment may affect the person, but the person’s characteristics and behavior will also influence the environment.
evidence-based practice
grounding what they do in research and ensuring that the curricula and treatments they provide have been demonstrated to be effective.
scientific method: An attitude or value about the pursuit of knowledge that dictates that investigators must be objective and must allow their data to decide the merits of their theorizing.
Theory
A set of concepts and propositions designed to organize, describe, and explain a set of observations.
Meta-analysis
A research method in which the results of multiple studies addressing the same question are synthesized to produce overall conclusions.
Ethnocentrism
The belief that one’s own cultural or ethnic group is superior to others.
G Stanley Hall
often cited as the founder of developmental psychology
Paul Baltes
laid out seven key assumptions of the lifespan perspective
Name the four major theoretical viewpoints about human development and name one major theorist or researcher associated with each.
- The psychoanalytic viewpoint developed by Sigmund Freud and revised by Erik Erikson and other neo-Freudians
- The learning perspective developed by such pioneers as Ivan Pavlov, John Watson, B. F. Skinner, and Albert Bandura
- The cognitive developmental viewpoint associated with Jean Piaget
- The systems theory approach, exemplified by Urie Bronfenbrenner’s bioecological model
State the opposing viewpoints in each of the four key developmental issues on which theorists disagree: nature vs. nurture; activity vs passivity; continuity-discontinuity; universality vs. context specificity.
Nature–nurture: (from above)
Activity–passivity: focuses on the extent to which human beings are active in creating and influencing their own environments and, in the process, in producing their own development, or are passively shaped by forces beyond their control.
Continuity–discontinuity: focuses in part on whether the changes people undergo over the life span are gradual or abrupt. Continuity theorists view human development as a process that occurs in small steps, without sudden changes, as when grade school children gradually gain weight from year to year. In contrast, discontinuity theorists tend to picture the course of development as more like a series of stair steps, each of which elevates the individual to a new (and often more advanced) level of functioning.
universality–context specificity: the extent to which developmental changes are common to all humans (universal) or are different across cultures, subcultures, task contexts, and individuals (context specific).
What are the two related meanings of discontinuity in development?*
- the course of development as more like a series of stair steps, each of which elevates the individual to a new (and often more advanced) level of functioning.
- changes that make the individual fundamentally different in some way
According to Freud, how does a mature, healthy personality achieve a dynamic balance between the id, ego and superego?
In the mature, healthy personality, a dynamic balance operates: The id communicates its basic needs, the ego restrains the impulsive id long enough to find realistic ways to satisfy these needs, and the superego decides whether the ego’s problem-solving strategies are morally acceptable. The ego has to balance the opposing demands of id and superego while taking into account the realities of the person’s environment.
How is positive reinforcement different from negative reinforcement? How are they alike?
positive reinforcement: desirable event that, when introduced following a behavior, makes that behavior more probable.
negative reinforcement: a response is strengthened or made more probable when its consequence is the removal of an unpleasant stimulus from the situation.
Explain Bandura’s ideas about reciprocal determinism.
The notion in social cognitive theory that the flow of influence between people and their environments is a two-way street; the environment may affect the person, but the person’s characteristics and behavior will also influence the environment. As Bandura sees it, environment does not rule, as it did in Skinner’s thinking: People choose, build, and change their environments; they are not just shaped by them. And people’s personal characteristics and behaviors affect the people around them, just as other people are influencing their personal characteristics and future behaviors. Bandura doubts that there are universal stages of human development.
- Learning involves watching a model and, through vicarious reinforcement or punishment, the consequences of the model’s behavior.
- Skills, cognitions, and behaviors, including ones that the learner has not been directly reinforced for displaying are learned
Without using the word “stage” in your explanation, explain why Piaget’s theory is considered a stage theory.
the development of thought from infancy to adolescence. four major periods of cognitive development. the mind that “constructs” understanding of the physical world also comes, with age, to understand gender, moral values, emotions, death, and a range of other important aspects of the human experience
Describe Lev Vygotsky’s sociocultural theory
Disagreeing with Piaget’s notion of universal stages of cognitive development, Vygotsky maintained that cognitive development is shaped by the sociocultural context in which it occurs and grows out of children’s interactions with members of their culture (Vygotsky, 1962, 1978). Each culture provides its members with certain tools of thought—most notably a language, but also tools such as pencils, art media, mathematical systems, and computers. The ways in which people in a particular culture approach and solve problems are passed from generation to generation through oral and written communication. Hence culture, especially as it is embodied in language, shapes thought. As a result, cognitive development is not the same universally. Whereas Piaget tended to see children as independent explorers, Vygotsky saw them as social beings who develop their minds through their interactions with more knowledgeable members of their culture.
*popular in recent years
What metaphor is used in the information processing approach to describe the human brain?
likens the human mind to a computer with hardware and software and examines the fundamental mental processes, such as attention, memory, decision making, and the like, involved in performing cognitive tasks.
Explain systems theory.
claims that changes over the life span arise from ongoing transactions in which a changing organism and a changing environment affect one another. The individual and the physical and social contexts with which he interacts are inseparable parts of a larger system in which everything affects everything else. Development can take a variety of paths, and some surprising turns, depending on the complex interplay of multiple influences. Nature and nurture cannot be separated easily because they are part of a dynamic system, continually influencing one another, “co-acting” to produce development.
Name, define and give an example of each of the five environmental systems in Bronfenbrenner’s bioecological model.
- microsystem: an immediate physical and social environment in which the person interacts face-to-face with other people and influences and is affected by them.
- mesosystem: interrelationships between two or more microsystems.
- exosystem: social settings that individuals do not experience directly but that can still influence their development.
- macrosystem: the larger cultural or societal context in which the microsystem, mesosystem, and exosystem are embedded. It includes a society’s cultural values, laws, political and economic systems, and institutions.
developmental stage
A distinct phase within a larger sequence of development; a period characterized by a particular set of abilities, motives, behaviors, or emotions that occur together and form a coherent pattern.
Extinction
The gradual weakening and disappearance of a learned response when it is no longer reinforced. possibly because overimitation has proven adaptive for our species, helping us learn “how we do things” in our culture—helping us acquire the many, often arbitrary, skills, rituals, and rules important in our culture, including new ways of solving problems. Overimitation also helps us fit in.
Overimitate
possibly because overimitation has proven adaptive for our species, helping us learn “how we do things” in our culture—helping us acquire the many, often arbitrary, skills, rituals, and rules important in our culture, including new ways of solving problems. Overimitation also helps us fit in.
Constructivism
the position taken by Piaget and others that humans actively create their own understandings of the world from their experiences, as opposed to being born with innate ideas or being programmed by the environment.
contrast psychosexual vs. psychosocial stages
psychosexual stages: Freud’s five stages of development, associated with biological maturation and shifts in the libido: oral, anal, phallic, latency, and genital.
psychosocial stages: Erikson’s eight stages of development (trust, autonomy, initiative, industry, identity, intimacy, generativity, and integrity), emphasizing social influences more and biological urges less than Freud’s psychosexual stages.
- Placed less emphasis on sexual urges as the drivers of development and more emphasis on social influences—not just parents but peers, teachers, schools, and the broader culture—claiming that nature and nurture are equally important.
- Placed less emphasis on the unconscious, irrational, and selfish id and more on the rational ego and its adaptive powers.
- Held a more positive view of human nature, seeing people as active in their development, largely rational, and able to overcome the effects of harmful early experiences.
- Put more emphasis on development after adolescence.
List and describe the three main arguments in Darwin’s theory of evolution.
There is genetic variation in a species. Genes that aid their bearers in adapting to their environment will be passed to future generations more frequently than genes that do not. This is the key principle of natural selection—the idea that nature “selects,” or allows to survive and reproduce, those members of a species whose genes help them adapt to their environment. Genes that increase the chances of surviving and reproducing will become more common over time because they will be passed to many offspring. Through natural selection, then, the genetic makeup of a species slowly changes—and will continue to change as long as individuals with certain genetic makeups reproduce more frequently than individuals with other genetic makeups. Change can eventually be sufficient to produce a new species.
For natural selection to work and for a species to evolve, what must be true of the genetic make-up of a species?
The idea that nature “selects,” or allows to survive and reproduce, those members of a species whose genes help them adapt to their environment.
Complete (or explain) this statement from the text “Genes do not determine anything….”
Not all human similarity is because of genes, however. Through the process of cultural evolution, we “inherit” from previous generations a characteristically human environment and tried and true ways of adapting to it, invent better ways of adapting and adjusting to changing conditions, and pass on what we learn to the next generation
escribe and give examples of the major mechanisms of inheritance (single gene-pair, sex-linked, and polygenic inheritance).
Through single gene-pair inheritance, each of thousands of human characteristics are influenced by only one pair of genes—one from the mother, one from the father.In sex-linked inheritance, a characteristic is influenced by single genes located on the sex chromosomes rather than on the other 22 pairs of chromosomes. In fact, most important human characteristics are influenced by polygenic inheritance—by multiple pairs of genes, interacting with multiple environmental factors, rather than by a single pair of genes. Examples of polygenic traits include height, weight, intelligence, personality, susceptibility to cancer and depression, and much more.
What happens to gene expression when a dominant gene is paired with a recessive gene?
It happens that there is a gene associated with tongue curling; it is a dominant gene, meaning that it will be expressed when paired with a recessive gene, a weaker gene that can be dominated (like one associated with the absence of tongue-curling ability).
What is the most likely outcome for a zygote with the wrong number of chromosomes?
In most cases, a zygote with the wrong number of chromosomes is spontaneously aborted; chromosome abnormalities are the main cause of pregnancy loss.
Describe how twin studies, adoption studies and family studies are done. What can each contribute to untangling genetic and environmental influences? What are some limitations of each?
twins: A simple type of twin study to untangle genetic and environmental influences involves determining whether identical twins reared together are more similar to each other in traits of interest than fraternal twins reared together. If genes matter, identical twins should be more similar because they have 100% of their genes in common, whereas fraternal twins share only 50% on average.
adopted: Researchers must appreciate that not only the genes of a biological mother but also the prenatal environment she provided influence how an adopted child turns out. Researchers must also be careful to correct for the tendency of adoption agencies to place children in homes similar to those they were adopted from. Finally, researchers must recognize that because adoptive homes are generally above-average environments, adoption studies may underestimate the effects of the full range of environments children can experience.
family studies: Researchers are conducting complex family studies that include pairs of siblings who have a variety of different degrees of genetic similarity—for example, identical twins, fraternal twins, full biological siblings, half siblings, and unrelated stepsiblings who live together in stepfamilies.
What are concordance rates and what do they tell us about the trait being studied?
The percentage of pairs of people studied (for example, pairs of identical twins or adoptive parents and children) in which if one member of a pair displays the trait, the other does too. If concordance rates are higher for more genetically related than for less genetically related pairs of people, the trait is heritable.
Describe molecular genetics and explain what molecular genetics studies tell us that behavioral genetics studies cannot.
Molecular genetics is the analysis of particular genes and their effects (Plomin et al., 2013). It involves identification of specific variants of genes that influence particular traits and comparisons of animals or humans who have these genes with those who do not. It also allows researchers to study the effects of specific genes in combination with the effects of specific environmental influences.
Compare the heritability of intelligence and temperament/personality
Clearly, correlations are higher when pairs of people are closely related genetically than when they are not and are highest when they are identical twins.
Temperament—tendencies to respond in predictable ways, such as sociability and emotional reactivity, that serve as the building blocks of later personality (see Chapter 11). Genes contribute to individual differences in both early temperament and later personality. The temperament of infants is genetically influenced. These identical twins seem like easy babies, eager to socialize.
Describe and give an example of passive gene-environment correlations, evocative gene-environment correlations and active gene-environment correlations.
Passive gene–environment correlations work like this: Because parents provide children with both their genes and a home environment compatible with those genes, the home environments to which children are exposed are correlated with (and are typically likely to reinforce) their genotypes.
In evocative gene–environment correlations, a child’s genotype also evokes certain kinds of reactions from other people. The smiley, sociable baby is likely to get more smiles, hugs, and social stimulation—and more opportunities to build social skills—than the wary, shy baby who makes you worry he will howl if you try anything.
Through active gene–environment correlations, children’s genotypes influence the kinds of environments they seek. The individual with a genetic predisposition to be extraverted is likely to go to every party in sight, invite friends over, join organizations, collect Facebook friends, and otherwise build a “niche” that is highly socially stimulating and that strengthens social skills. The child with genes for shyness may actively avoid large group activities and instead develop solitary interests.
Explain what epigenetic effects are and what they say about the relationship between genes and environment.
Epigenetic effects, ways in which environmental factors influence the expression of particular genes in particular cells.
Through epigenetic effects, factors such as diet, stress, alcohol and drugs, environmental toxins, and early parental care leave records, chemical codings on top of certain genes that affect whether those genes are turned on or off. Analysis of RNA can now reveal these patterns of gene expression.
Explain why genetic research and behavioral genetic research are controversial.
New techniques for “editing” the genome and inserting new genes in patients’ bodies promise to revolutionize gene therapy—and raise all kinds of ethical issues and concerns about unintended consequences. To give parents information that might prompt them to abort a fetus that is not of the desired health status or intellect, and to experiment with techniques for altering an individual’s genetic makeup through gene therapy
species heredity:
The genetic endowment that members of a particular species have in common; a contributor to universal species traits and patterns of maturation.
crossing over
A process in which genetic material is exchanged between pairs of chromosomes during meiosis.
incomplete dominance
a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
Zygote
The moment of fertilization, when a sperm penetrates an ovum, forming a zygote.
Heritability
The amount of variability in a population on some trait dimension that is attributable to genetic differences among those individuals.
identical twins vs. fraternal twins:
Identical twins – monozygotic twins who develop from a single zygote that later divides to form two genetically identical individuals.
Fraternal twins – are not identical and who result when a mother releases two ova at roughly the same time and each is fertilized by a different sperm.
genotype vs. phenotype
genotype: The genetic endowment that an individual inherits. Contrast with phenotype.
Phenotype: The way in which a person’s genotype is expressed in observable or measurable characteristics. (what it looks like on the outside)
gene-environment interaction vs. gene-environment correlation:
gene-environment interaction: The effects of our genes depend on what kind of environment we experience, and how we respond to the environment depends on what genes we have. Thus, the genes people have make a difference only when their environment is stressful, and a stressful environment has an effect only on individuals with a genotype that predisposes them to depression. Genes and environment interact.
gene-environment correlation: A systematic interrelationship between an individual’s genes and that individual’s environment; ways in which genes influence the kind of home environment provided by parents (passive gene–environment correlation), the social reactions to the individual (evocative gene–environment correlation), and the types of experiences the individual seeks (active gene–environment correlation).
shared environmental influences vs. nonshared environmental influences:
Shared: (the opposite) = same environmental influences
Non-shared: if differences in their development are systematically related to differences in their experiences. Since they have identical genes and grew up in similar prenatal and postnatal environments, differences in their behavior or development can be credited to differences in their experiences
Explain how an infant conceived through in vitro fertilization could wind up with five “parents”.’
a sperm donor, an egg donor, a surrogate mother in whom the fertilized egg is implanted, and a caregiving mother and father.
Name the three phases into which embryologists divide the prenatal period and describe how these phases fit into the trimesters into which most parents and obstetricians divide the prenatal period.
- the germinal period: The first trimester begins with the germinal period, which lasts approximately 2 weeks;
- the embryonic period: The first trimester continues with the embryonic period, which occurs from the third to the eighth week after conception. During this short time, every major organ takes shape.
- fetal period: The fetal period lasts from the ninth week of pregnancy until birth, which means it encompasses part of the first trimester and all of the middle and last trimesters
Describe the main events of the embryonic period, including their timing.
a. Embryo elongates, three layers form (ecto, meso, and endoderm)
b. Embryo curves, and folds to form neural tube. Heart beats for the first time.
c. Ears, mouth, and throat take shape. Heart divides into two regions
d. Heart divids into four chambers. Sexual differentiation begins.
e. Most structures and organs present. Ovaries and tests are evident. Embryo straightens and looks more human.
Describe the main events of the fetal period, including their timing.
Bone tissue emerges, embryo becomes fetus. Head of fetus looks huge. Fetus and open and close mouth and turn head.
Fingers and toes formed. Genitalia developeed. Movements increasees a lot. “Breathing” and reflexes.
Heartbeat audible with stethoscope. Mother feels movements. Skeleton hardens
Fingernails, toenails, hair, teeth buds, eyelashes grow. Brain development is phenomenal
Viability - chance of survival outside womb!
Fetus gains weight, brain grows, nervous system organized
Last 6 weeks of full-term pregnancy weight gain and brain activity. Lungs mature.
Define proliferation, migration, and differentiation of neurons and describe what happens during each of those phases.
Proliferation: of neurons involves their multiplying at a staggering rate during this period; by one estimate, the number of neurons increases by hundreds of thousands every minute throughout all of pregnancy, with a concentrated period of proliferation occurring between 6 and 17 weeks after conception
Migration: the neurons move from their place of origin in the center of the brain to particular locations throughout the brain where they will become part of specialized functioning units. Migration is influenced by genetic instructions and by the biochemical environment in which brain cells find themselves.
Differentiation: transformation of cells. Neurons may evolve into a particular type or function based on where they land following migration. Alternatively, another theory is that cells may “know” what they are supposed to be and where they are intended to go on their migratory path before reaching their final destination
Describe how three generations of people might be affected by prenatal environmental factors such as maternal smoking.
it is not only the unborn child who may be affected by prenatal environmental factors: The offspring of the unborn child may also be affected. Through epigenetic codings carried on the DNA of the reproductive cells of the developing fetus, a pregnant woman’s health, diet, and environment may adversely affect her future grandchildren. Epigenetics is a critical component in understanding fetal programming. According to research with animals and increasingly humans, prenatal imbalances in nutrition and exposure to environmental toxins may alter molecular pathways in ways leading to disease and health challenges later in life. Adult health and mental health conditions such as obesity, heart disease, and schizophrenia may arise, in part, from the prenatal environment and fetal programming.
Describe any five teratogens and their impact on the developing embryo and fetus.
Drug: thalidomide: relieved early morning sickness a while ago, but the women gave birth to babies with missing limbs or body parts in the wrong spot based on when she took the medicine.
Tobacco: increased miscarriage, prematurity, growth retardation, respiratory problems, cleft lips, CNS impairment, later health problems (ie. inflammatory bowel disease)
Alcohol: FAS deformities, irritability, hyperactivity, seizures, termors, low IQ tests, attention deficits, psychiatric disorders.
Cocaine: greater reactivity response to stimulation in first year, deficits in information processing, delinquent behavior.
Antidepressants: greater risk for heart malformations, neural tube defects, low birth weight, respiratory distress
Chemo: miscarriage and malformations
Marijuana: low birth weight, premature birth, irritability at birth, deficits in general intelligence
Name seven effects of maternal smoking during pregnancy. How does maternal smoking cause these effects?
increased miscarriage, prematurity, growth retardation, respiratory problems, cleft
lips, CNS impairment, later health problems (ie. inflammatory bowel disease)
What amount of alcohol drinking during pregnancy appears to be safe?
There is no level that seems “safe”
Describe the causes and effects of fetal anoxia during birth.
Anoxia - oxygen shortage. brain cells die if they are starved of oxygen for more than a few minutes. Severe anoxia can initially cause poor reflexes, seizures, heart rate irregularities, and breathing difficulties. In the long run, severe anoxia can lead to memory impairment or cerebral palsy, a neurological disability primarily associated with difficulty controlling muscle movements; it also increases the risk of learning or intellectual disabilities and speech difficulties
Discuss four differing cultural practices surrounding birth (include Western industrial cultures).
Kenya: fathers stop hunting so he doesn’t get killed by animals.
Midwifery: delivers the baby
Placenta buried in goat enclosure
Baby washed in cold water and given mixture of hot ash and boiled herbs so it will vomit amniotic fluid
India: dai assists delivery. Hands on helps push baby out
Pushing on the floor
In Nambia, women labor by themselves, the woman goes off on our own and expected to labor quietly. Otherwise it’s a sign of weakness.
Western: highly medicalized, hooked up to monitors, separated from most family members. But they prevent infant fatalities better.
How does postpartum depression in mothers affect their infants?
an episode of clinical depression lasting 2 or more weeks (rather than days) in a woman who has just given birth. children whose mothers experienced postpartum depression may become less securely attached to their mothers during infancy and less responsive during interactions with their mothers at age 5. postnatally depressed mothers show more violent behavior even when researchers control for family characteristics and later episodes of maternal depression. Adolescents whose mothers had been postnatally depressed also show elevated levels of cortisol, which is associated with major depression
Discuss risk and resilience, including damaging effects that are irreversible and the Werner and Smith findings about the outcomes of at-risk infants.
Risk: Children who have a higher than normal chance of either short-term or longterm problems because of genetic defects, prenatal hazards, or perinatal damage.
Resilience: their ability to rebound from early disadvantages and to respond to environmental influences throughout their lives rather than only during so-called critical periods.
Study: studied a group of babies born in 1955 on the island of Kauai in Hawaii. On the basis of this information, each baby was categorized as having been exposed to severe, moderate, mild, or no prenatal or perinatal stress. At ages 1, 2, 10, 18, 32, and 40 years, researchers diligently tracked down their participants and conducted interviews (initially with the mothers and later with the children), administered psychological and cognitive tests, rated the quality of the family environment, and conducted medical examinations. One-third of the children classified as at-risk showed considerable resilience, getting themselves back on a normal course of development.
Discuss risk and resilience, including damaging effects that are irreversible and the Werner and Smith findings about the outcomes of at-risk infants.
- Two major findings emerge from this research:
- Two types of protective features:
Two major findings emerge from this research:
1. The effects of prenatal and perinatal complications decrease over time.
2. The outcomes of early risk depend on the quality of the postnatal environment.
Two types of protective features:
1. Personal resources: because of their genetic makeup, some children have qualities such as intelligence, sociability, and communication skills that help them choose or create more nurturing and stimulating environments and cope with challenges. parents and other observers noted that these children were agreeable, cheerful, and self-confident as infants, which elicited positive caregiving responses
2. Supportive postnatal environment: receive the social support they need within or outside the family. Most importantly, they are able to find at least one person who loves them unconditionally and with whom they feel secure.
blastocyst
A hollow sphere of about 100 to 150 cells that the zygote forms by rapid cell division as it moves through the fallopian tube.
age of viability
A point (around the 24th prenatal week) when a fetus may survive outside the uterus if the brain and respiratory system are well enough developed and if excellent medical care is available.
Myelin
A fatty sheath that insulates neural axons and thereby speeds the transmission of neural impulses.
Teratogen
Any disease, drug, or other environmental agent that can harm a developing fetus.
Couvade
Sympathetic pregnancy, or the experiencing by fathers of some of the same physiological symptoms their pregnant partners experience (for example, bloating, weight gain, fatigue, insomnia, and nausea).
critical period vs. sensitive period:
Critical: A defined period in the development of an organism when it is particularly sensitive to certain environmental influences; outside this period, the same influences will have far less effect.
Sensitive: As compared to a critical period, a period of life during which the developing individual is especially susceptible to the effects of experience or has an especially high level of plasticity.
spina bifida vs. anencephaly:
Spina bifida: Condition in which the bottom of the neural tube fails to fully close during prenatal development and part of the spinal cord is not fully encased in the protective covering of the spinal column.
Anencephaly: Condition in which the top of the neural tube fails to close and the main portion of the brain above the brain stem fails to develop properly.
Teratogen
Agent that can harm a fetus
Anoxia
lack of oxygen during birth
Couvade
pregnancy symptoms experienced by fathers
Apgar
10-point newborn assessment
Epigenetic effects
gene expression modified by environmental events