Unit IX - Developmental Psychology Flashcards
What is developmental psychology?
a branch of psychology that studies physical, cognitive, and social CHANGE throughout the LIFE SPAN
What three issues have engaged developmental psychologists?
Nature vs nurture
Continuity and stages
Stability and change
How do genes form our nature?
Genes PREDISPOSE both our shared HUMANITY
and our individual DIFFERENCES.
How does our environment shape our nurture?
But our EXPERIENCES also FORM us, in the
womb and in the world.
Even differences rooted in our nature may be STRENGTHENED by our nurture.
We are not formed by either nature or nurture,
but by their interrelationships—their __________.
Interaction
How do stage theorists view development?
EMPHASIZE biological maturation- SEQUENCE of genetically predisposed stages/ steps
EVERYONE passes through stages in SAME ORDER
What evidence supports the theory of stable development over time?
One research team that studied 1000 people from ages 3 to 38 was struck by the CONSISTENCY
of temperament and emotionality across time.
Out-of-control 3-year-olds were the most likely to become teen smokers, adult criminals, or
out-of-control gamblers.
What additional research on nature v. nurture exists?
In another study, 6-year-old Canadian boys with
CONDUCT problems were four times MORE likely than other boys to be convicted of a VIOLENT
crime by age 24.
Can temperament predict divorce?
In one longitudinal study of 306 college alums, 1 in 4
with yearbook expressions MEH later divorced, as did only 1 in 20 with
smiles like the one on the right.
are people’s personalities mostly stable over time?
People PREDICT that they will NOT change much
in the FUTURE.
As people grow OLDER, personality gradually STABILIZES
But we do change, too, right?
Social attitudes- less stable than temperament especially during late adolescent years
Older children- NEW ways to COPE
Delinquent children do NOT always become troublign adults
Are both stability and change important?
Life requires BOTH stability and change.
Stability provides our IDENTITY, enabling us
to DEPEND on others and on ourselves.
Our potential for change gives us our HOPE for a
brighter future, allowing us to adapt and GROW with experience.
What is the course of prenatal development?
Life begins at CONCEPTION and continues through SEVERAL stages in the WOMB.
How does conception occur?
Ovary-> Egg
Sperm-> Digestive enzymes -> Egg
How is the egg fertilized?
One sperm PENETRATES the coating and enters through the egg’s surface BLOCKING out the other sperm.
Within hours, the egg nucleus and the sperm nucleus FUSE:
the two become one.
What happens in the germinal stage of prenatal development?
the first 10-day to 2-weeks of development is when the fertilized egg undergoes rapid CELL DIVISION.
Cells begin to SPECIALIZE into different tissues
Zygote
fertilized egg
How does the zygote become an embryo?
Completion of Germinal- zygote ATTACH to UTERINE WALL
Healthy mother-> healthy baby
Over next 6 WEEKS -> organ formation/ Heart beats
Embryo
Zygote’s inner cell
Placenta
Outer cells- LIFE-LINK transfer nutrients & oxygen from mother to embryo
How does an embryo become a fetus?
By 9 WEEKS after conception, an embryo looks unmistakably HUMAN.
It is now a FETUS (Latin for “offspring” or “young one”).
Sixth month-> organs develop enough to allow for successful premature birth
What happens in the fetal stage?
Start of ninth week-> beginning of fetal period
FACE, HANDS, and FEET formed
How big is a fetus?
16th week-> only 3 ounces-> fit into palm
What is the prenatal development sequence?
Zygote
Embryo
Fetus
What does research show about the development of language in the womb?
Repeatedly hearing a word causes newborns’ brain waves to display recognition
Bilingual mother-> Newborns display interest in BOTH
Melodic up & down of newborn cries-> sounds like native tongue
What are teratogens?
“monster makers”
agents, such as chemicals and viruses, that can reach the embryo or fetus during
PRENATAL development and cause HARM
Examples of teratogens
Alcohol consumption Tobacco use Drug use Viruses Medication
How does alcohol impact the fetus?
A pregnant woman NEVER smokes or drinks ALONE. When alcohol enters her bloodstream, and that of her fetus, it REDUCES activity in both their CENTRAL nervous systems.
What are the implications for the fetus when the mother drinks during pregnancy?
Alcohol use during pregnancy may PRIME the woman’s offspring to LIKE alcohol and put them at RISK for heavy drinking and alcohol use DISORDER during their teen years.
How does maternal drinking affect the fetus?
Persistent HEAVY drinking puts the fetus at risk for a dangerously LOW birth WEIGHT, birth DEFECTS,
future behavior PROBLEMS, and lower intelligence.
What is fetal alcohol syndrome?
Occurs 1 in about 700 children
MOST serious of all fetal alcohol spectrum DISORDERS, marked by lifelong physical and mental ABNORMALITIES.
What adaptive reflexes is the newborn equipped with?
Automatically search for nipples and suck
Startle reflex
Grasping reflex
Startle reflex in newborn is when…
Arms & legs spring out, followed by fist clenching/ loud crying
What is habituation?
decreasing responsiveness with repeated stimulation
How is it used to study infants?
As infants gain FAMILIARITY with repeated exposure
to a stimulus, their interest WANES and they look away sooner. The novel stimulus gets attention when first presented. With repetition, the response weakens.
Rooting reflex
Corner of mouth is touched- baby will turn head and open mouth- help find breast
Sucking reflex
Roof of mouth touched- begins to suck
Grasping reflex
Stroking of hand or feet causes grasping
Babinski reflex
Sole of foot stroked- big toes moves upward while other toes fan out
What is maturation?
biological GROWTH
processes that enable ORDERLY
changes in behavior, relatively
UNINFLUENCED by experience
How does the brain develop during infancy?
In humans, the brain is IMMATURE at birth. As the child matures, the neural networks grow INCREASINGLY complex.
What does the research show about brain development in infancy and childhood?
Rapide development-> brain size increases rapidly
Most rapid growth between ages 3-6-> frontal lobe-> vast amount of energy needed -> ability to control ATTENTIOn & BEHAVIOR
association areas in babies
last cortical areas to develop and mental abilities surged
How do we form and prune neural connections?
Fiber PATHWAYS supporting agility, language, and
self-control PROLIFERATE into puberty.
Under the influence of ADRENAL hormones, tens of billions of synapses form and organize, while a USE-IT-OR-LOSE-IT pruning process shuts down unused links.
Maturation to development psychologists is …
A BIOLOGICAL sequences
What is the sequence of motor development?
Sit
crawl
walk
run
Is age of walking guided by nature or nurture?
Genes guide motor DEVELOPMENT.
In the United States, 25% of all babies walk by 11 months of age, 50% within a week after their first birthday, and 90% by age 15 months.
Does nurture also play a role in learning to walk?
Nurture may amend what nature intends.
In some regions of Africa, the Caribbean,
and India, caregivers often massage and exercise babies, which can accelerate the process of
learning to walk.
What does research show about our ability to retain early memories?
Recall little before age 4-> rapid neuron growths disrupts circuits with old memories
Maturation-> infantile amnesia wanes-> better at remembering experiences
HC and front lobes continues to mature
Do infants have nonverbal memory?
Carolyn Rovee-Collier observed nonverbal infant memory in son
Calmed by crib mobile- tied ribbon from mobile to foot -> kicking foot to move mobile
So, can babies learn?
Babies CAN learn
Repeated crib experiences with other infants-> same results
How does Rovee-Collier’s research demonstrate infant learning?
Babies hitched to different mobile-> remembers original mobile/ recognize difference
Tethered to familiar mobile a month later- association causes kicking
What additional evidence demonstrates learning in infants?
One study tested English-speaking British adults who had no conscious memory of the Hindi or Zulu they
had spoken as children.
Yet, up to age 40, they could relearn subtle sound contrasts in these languages that other English speakers could not learn.
Once conscious, how does the mind grow?
Jean Piaget-> studied development of children’s cognition
What was Piaget’s belief about cognitive development?
Piaget’s studies led him to believe that a child’s mind DEVELOPS through a SERIES of stages,
in an upward march from the newborn’s SIMPLE reflexes to the adult’s ABSTRACT reasoning
power.
How do we make sense of our experiences?
Piaget’s core idea was that our intellectual PROGRESSION
reflects an UNCEASING struggle to make SENSE of our experiences.
What are schemas?
Concepts or mental molds into which we pour our experiences
What is a schema for a doggy?
4 legs, furry coat, long tail, wet tongue, cold nose, fun, friendly
How does a child add new items to existing schemas?
When first seeing a “cat”, a child may think of it in RELATION to their schema of “doggy”…four legs, furry, long tail, cold nose… and ASSIMILATE (or add) this new example into their existing schema
What if a new example doesn’t fit our existing schema?
If the new example does not quite fit the schema, we receive CORRECTION and need to MODIFY our understanding.
This is called ACCOMMODATION
How does accommodation increase cognition?
By ACCOMMODATING (or changing) the existing SCHEMA and adding new CHARACTERISTICS to distinguish “doggy” from “cat”, we begin to INCREASE cognitive UNDERSTANDING of our world.
Schemas develop throughout the lifespan.
CONTINUOUS process as we experience new information
How has our schema of “love” and “marriage” changed over time?
Late 1900s-> between men and women
Early 2000s-> same sex allowed
What are Piaget’s four stages of cognitive development?
Piaget-? constructing understanding while interacting with it Sensorimotor Preoperational Concrete operational formal operational
What is the sensorimotor stage?
stage (from BIRTH to nearly 2 YEARS of age) during which infants know the world mostly in terms of their SENSORY
impressions (what they see, hear, etc.)and
MOTOR activities (how they move)
What is object permanence?
Awareness that objects continue to exist even when not perceived
lacking in YOUNG INFANTS
How did Piaget test object permanence?
Young babies- live in present
Before 6 months-> disappeared toy-> does not exist
By 8 months-> exhibit memory of disappeared things/ search for toy
Criticism of Piaget
Piaget-> underestimated competence and intelligence of infants
young children-> little scientists learning from ideas, pattern, inferences
Renn Baillargeon & impossible scenarios
Devised impossible scenes-> ball stopping in mid-air
Babies stare longer at these events that VIOLATE EXPECTATIONS
Do infants have math sense?
Karen Wynn-> showed 5 months objects hidden behind screen and visibly added or removed one
What were the results?
When she lifted the screen, the infants sometimes did a DOUBLE take,
staring LONGER when shown a WRONG number of objects.
What is the preoperational stage?
in Piaget’s
theory, the stage (from about 2 TO 6 OR 7 YEARS of age) during which
a child LEARNS to use LANGUAGE but does NOT yet comprehend the
mental operations of concrete LOGIC.
What is conservation?
the principle (which Piaget believed to be a part
of concrete operational reasoning) that PROPERTIES such as mass, volume, and number remain the
SAME despite CHANGES in the forms
of objects
How did Piaget test for conservation?
When one wide glass of milk is poured into a tall, skinny glass, preoperational child thinks there is “more” milk
What is pretend play?
the ACTING out of stories which involve multiple PERSPECTIVES, the playful MANIPULATION of ideas and emotions, and the use of SYMBOLS
What research has been conducted on symbolic function in cognitive development?
Judy Deloache-> showed children a model of a room hid stuffed dog behind couch
2.5 yrs-> remember stuffed do/ does not use model to locate actual dog in real room
3 yrs-> able to find real stuffed animal-> able to think of model as symbol
What is egocentrism?
in Piaget’s theory,
the preoperational child’s DIFFICULTY
taking ANOTHER’S point of view
What are examples of egocentrism?
Asked to show mom a picture-> 2 yr old holds pic up to own eyes
3 yr old Gray- invisible by covering eyes assuming grandparents won’t be able to see him
4 yr old Norah- show aunt toys through telephone call
What is theory of mind?
people’s ideas about their own and others’ mental states—about their feelings, perceptions, and thoughts, and the behaviors these might predict
How does theory of mind reveal itself?
With time-> ability to take another’s POV developes
Come to understand feelings-> teasing, empathy, persuasion-> how other feels matter
How is theory of mind tested?
Sally doll and ball
Children viewed a doll named Sally leaving her ball in a red cupboard.
Another doll, Anne, then
moved the ball to a blue cupboard.
When Sally returns, where will she look for the ball?
When asked the question above, 85% of the children in the study answered the question correctly. This showed that although they subjects knew the ball had been moved, they demonstrated theory of mind in knowing that Sally would NOT have known.
What is the concrete operational stage?
In Piaget’s theory, the stage of cognitive development (from about 7 TO 11 YEARS OF AGE) during which children gain the mental OPERATIONS that enable them to think LOGICALLY
about events.
Children in the concrete operational stage would understand child humor such as pizza joke
Cutting a pizza into either 6 or 8 slices does not impact quantity
What is the formal operational stage?
In Piaget’s theory, the stage of cognitive development (normally beginning about AGE 12) during which people begin to think LOGICALLY about ABSTRACT concepts
What characterizes the formal operational stage?
Reasoning expands to concrete to abstract thinking
Can ponder about hypothetical propositions: IF THIS, THE THAT-> systematic reasoning
Who was Lev Vygotsky?
Russian developmental psychologist-> studied how child’ mind feeds on language of social interaction
How did Piaget’s view of cognitive development differ from that of Vygotsky?
Piaget- emphasized how child’s mind grows through interaction with PHYSICAL environment
Vygotsky-> emphasized how child’s mind grow through interaction with SOCIAL environment
What is scaffolding?
a framework that offers children TEMPORARY support as they develop
HIGHER levels of thinking
Scaffolding example
Giving children new words- mentoring
What was Vygotsky’s view of child cognitive development?
Effective mentoring occurs when children are
developmentally ready to learn a new skill.
Child’s zone of poximal development
Zone between what a child can do with help
Children learn best when social environment presents with something between
too easy
too difficult
What is autism spectrum
disorder(ASD)?
a disorder that appears in CHILDHOOD and is marked by significant DEFICIENCIES in communication and social interaction, and by rigidly FIXATED
interests and REPETITIVE behaviors.
What is the prevalence of autism spectrum disorder (ASD)?
1 in 68 American children- reported rates varies by states and nations
What characterizes autism spectrum disorder?
Poor communications among brain regions that allows us to take another’s POV
Less contact with others
People with ASD are said to have an IMPAIRED…
theory of mind
When Sally returns, where would she look for the ball? for autism children
Only 20% of children with autism answered the question correctly
Most answered that Sally would look in the blue cupboard, evidencing that they did not recognizing that Sally did not know moving of ball.
How does the experience of ASD differ along the spectrum?
About half-> good outcome
Some function at high level-> normal IQ with exceptional talent in specific area, lacking social & communication skills
Severe end-? struggle to use language
What biological factors (nature) do or do NOT contribute to ASD?
Prenatal environment matters-> drug use, stress, diseases
Vaccine does not contribute to ASD
genetics & abnormal brain development contribute to ASD
Is a diagnosis of ASD given more often for boys or girls?
ASD afflicts about three boys for every girl.
Boys-> systemizers
Girls-> empathizers
What research did Baron-Cohen conduct on ASD?
Knowing that television shows with vehicles have been popular among kids with ASD, they created animations with toy vehicle characters in a pretend
boy’s bedroom, grafting emotion-conveying faces onto toy trams, trains, and tractors.
What happens in the television show?
After the boy leaves for school, the characters come to life and have experiences that lead them to display various emotions.
What happened next?
After viewing the television programming, the child subjects were asked to match the correct face with the story
What were the results of this research?
The children were surprisingly able to generalize what they had learned to a new, real-life context. By the
intervention’s end, their previously deficient ability to recognize emotions on real faces now equaled that of children without ASD
How do parent-infant bonds form?
babies are social creatures, developing an intense ATTACHMENT to their caregivers.
Infants come to prefer FAMILIAR faces and voices, then coo and gurgle when given a parent’s ATTENTION.
What is attachment?
an emotional TIE
with another person; shown in young children by their seeking CLOSENESS to their caregiver and
showing DISTRESS on separation
Parent-infant attachment bond is a …
powerful survival impulse that keeps
infants close to their caregivers.
What is stranger anxiety?
the fear of
strangers that infants commonly
display, beginning by about
8 months of age
When does separation anxiety peak?
peaks at around 13 months,
then gradually declines.
Harlow and Money experiment
1950s, University of Wisconsin psychologists Harry Harlow and Margaret Harlow-> used money in learning studies
SEPARATED the infant monkeys from their mothers shortly after birth and raised them in individual cages, each including a cheesecloth baby BLANKET.
SURPRISE -> when their soft blankets were taken to be washed, the monkeys became DISTRESSED.
How does attachment to a caregiver occur?
psychologists reasoned that infants became ATTACHED to those who satisfied their need for NOURISHMENT
The idea that attachment derives from an association with nourishment was contradicted by ….
Harlows monkey experiment
Harlows’ research design
Two artificial mothers- one bare wire cylinder with wooden head and attached feeding bottle, second a cylinder with no bottle but covered with foam rubber wrapped with terry cloth
What were the assumptions in the Harlow study?
Most monkeys prefer comfy cloth “mother” -> cling to it when anxious
What were the conclusions of the Harlow study?
Babies exploring environment -> uses cloth mother as SECURE BASE -> invisible attachment
Adding other qualities made clot mothers more appealing
What is the critical period for development of attachment?
optimal period when certain events must take place to facilitate proper development.
Another key to attachment is
familiarity
Critical period in birds
Goslings, ducklings, or chicks -> shortly after hatching following first object they see
How did Konrad Lorenz explore imprinting in geese?
Although baby birds imprint BEST to their own species, they also will imprint to a variety of MOVING objects—an animal of another species, a box on wheels, a bouncing ball.
Imprinting
process by which certain animals form strong
attachments during early life.
Do humans imprint?
Do not imprint
Become ATTACHED during SENSITIVE PERIOD
EXPOSURE -> fondness
Prefer familiarities
Mary Ainsworth & strange situation experiment
a procedure for studying child-caregiver ATTACHMENT; a child is placed in an UNFAMILIAR environment while their caregiver LEAVES and then RETURNS, and the child’s REACTIONS
are observed
Secure attachment
demonstrated by infants who COMFORTABLY explore environments in the PRESENCE of their caregiver,
show only TEMPORARY distress when the caregiver leaves, and find
COMFORT in the caregiver’s return
insecure attachment
demonstrated by infants who display either a clinging, ANXIOUS
attachment or an AVOIDANT
attachment that RESISTS closeness
What are two types of insecure attachment?
anxious
avoidant
What are the two types of attachment?
secure
insecure
anxious attachment
People constantly crave ACCEPTANCE but remain VIGILANT to signs of possible REJECTION.
avoidant attachment
People experience DISCOMFORT getting CLOSE to others and use avoidant strategies to maintain DISTANCE from others.
How does an insecure attachment affect romantic relationships?
In romantic relationships, an anxious attachment style
creates constant CONCERN over REJECTION, leading people to CLING to their partners.
An avoidant attachment style DECREASES commitment and INCREASES conflict
What is temperament?
a person’s INNATE and INBORN
characteristic emotional REACTIVITY
and INTENSITY
Can an infant’s temperament influence attachment?
Twin & developmental
studies -> heredity affects temperament, & temperament affects attachment style.
After birth -> some babies are more difficult than others
How does temperament impact parenting?
Parenting correlates with children’s behavior
Difficult children elicit/ react more to negative parenting
How do we vary parenting while controlling for temperament?
Dutch researcher-> mothers receiving personal training in sensitive responding -> securely attached infants
What bias has historically existed toward fathering?
Infants who lack a caring mother are said to suffer
“maternal deprivation”; those lacking a father’s care merely experience “father absence.”
This reflects a wider attitude in which “fathering a child” has meant impregnating, and “mothering” has meant nurturing.
Fathering in nature
Emperor penguin dads may lose half their body weight over the two months they spend keeping a precious egg
warm during the harsh Antarctic winter.
After mom returns from the sea, both parents take turns caring for and
feeding the chick
Stay-at-home dads
experience has made him APPRECIATE how DIFFICULT the
work can be
What does the research show about the power of dads?
a father’s LOVE and ACCEPTANCE have been comparable with a mother’s love in
predicting their offspring’s HEALTH and
well-being.
What impact does involved fathering have on children’s success in school?
those whose
fathers were MOST involved in parenting (through outings, reading to them, and taking an interest in their education) tended to achieve MORE in school