Chapter 4: Developing Through the Life Span Flashcards
What is developmental psychology?
A branch of psychology that studies physical, cognitive, and social change throughout the life span of humans
What three issues have engaged developmental psychologists?
- Nature and nurture
- Continuity and stages
- Stability and change
What question is being asked in the nature and nurture issue of developmental psychology?
How genetics (nature) and experience/environment (nurture) interact to influence our development
What question is being asked in the continuity and stages issue of developmental psychology?
What parts of development are gradual and continuous and what parts are in abruptly changing stages
What question is being asked in the stability and change issue of developmental psychology?
Which of our traits persist through life and what does change as we age
What are the names of the three most popular stage theorists (arguing for the existence of stages in human development) in developmental psychology?
- Lawrence Kohlberg
- Erik Erikson
- Jean Piaget
Stage theorist Lawrence Kohlberg focused on what specific type of development?
Moral development
Stage theorist Erik Erikson focused on what specific type of development?
Psychosocial development
Stage theorist Jean Piaget focused on what specific type of development?
Cognitive development
Developmental researchers who consider how biological, psychological, and social-cultural forces interact are focusing on which issue of developmental psychology?
The nature vs nurture issue
Developmental researchers who emphasize learning and experience are supporting ___________________; those who emphasize biological maturation are supporting ___________________.
Continuity; Stages
What findings in psychology support (1) the stage theory of development and (2) the idea of stability in personality across the life span?
(1) Stage theory is supported by the work of Piaget, Kohlberg, and Erikson. (2) Some traits, such as temperament, exhibit remarkable stability across many years.
What do the zygote’s inner cells become?
Embryo
What do the zygote’s outer cells become?
Placenta
How is a zygote formed?
At contraception, when one sperm cell unites with an egg to form a zygote
What are teratogens?
Teratogens are potentially harmful agents (chemicals, viruses) that can pass through the placenta and harm the developing embryo or fetus
Approximately how many cells does a human have?
37 trillion cells
Approximately how many sperm cells are racing towards the egg during conception?
250 million sperm cells
What is a zygote?
The fertilized egg
What is the first stage of prenatal development?
The zygote enters a 2-week long period of rapid cell division and develops into an embryo
What is the second stage of prenatal development?
The human organism (at this stage called an embryo) is developing from about 2 weeks after fertilization until week 9
What is an embryo?
The developing human organism from about 2 weeks after fertilization until week 9
What is the third stage of prenatal development?
The human organism (at this stage called a fetus) is further developing from week 9 after conception until birth
What is a fetus?
The developing human organism from 9 weeks after conception to birth
During what month after conception does a fetus develop its stomach, giving the fetus a good chance of surviving if born prematurely?
During the 6th month
When does the fetus begin to develop facial features, hands, and feet?
At the start of week 9 after conception
By what month after conception is the fetus responsive to sound?
By the 6th month
What is the placenta?
It is a life link between the mother and the fetus, transferring nutrients and oxygen from mother to fetus and screening out many harmful substances
What is fetal alcohol syndrome (FAS)?
Physical and cognitive abnormalities in children caused by a pregnant woman’s heavy drinking
What are signs of fetal alcohol syndrome (FAS) in severe cases?
Small, out-of-proportion head and abnormal facial features
The first two weeks of prenatal development is the period of the ______________. The period of the ______________ lasts from 9 weeks after conception until birth. The time between those two prenatal periods is considered the period of the ________________.
Zygote; Fetus; Embryo
What are some newborn abilities?
Babies are born with sensory equipment and reflexes that facilitate their survival and their social interactions with adults
How do researchers explore infants’ mental abilities?
Researchers use techniques that test habituation, such as the novelty-preference procedure, to explore infant’s mental abilities
What major three reflexes do newborns have already?
- Root reflex
- Startle reflex
- Grasp reflex
What is the root reflex in babies?
When something touches their cheek, babies turn toward that touch, open their mouth, and vigorously root for a nipple
What is the startle reflex in babies?
When arms and legs spring out, quickly followed by fist clenching and loud crying
What is the grasp reflex in babies?
Strongly grasping for objects or people
What is habituation?
Decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a stimulus, their interest wanes and they look away sooner.
How do researchers explore what fetuses see and remember?
They use the habituation effect (with repeated stimuli boredom increases and response weakens) to their advantage as they can explore whether the fetus is bored with a familiar stimuli
Infants’ _____________ to repeated stimulation helps developmental psychologists study what infants can learn and remember.
habituation
The three major issues that interest developmental psychologists are nature/nurture, stability/change, and _________/_________.
continuity / stages
Although development is lifelong, there is stability of personality over time. For example,
a. most personality traits emerge in infancy and persist throughout life.
b. temperament tends to remain stable throughout life.
c. few people change significantly after adolescence.
d. people tend to undergo greater personality changes as they age.
b
Body organs first begin to form and function during the period of the _______________; within 6 months, during the period of the ___________, organs are sufficiently functional to provide a good chance of surviving and thriving.
embryo; fetus
Chemicals that the placenta isn’t able to screen out that may harm an embryo or fetus are called _______________.
teratogens
What is maturation?
Biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience
What is pruning?
Experiences trigger a pruning process, in which unused brain connections weaken and heavily used ones strengthen
What is the timing of the development of complex motor skills (sitting, standing, walking) in newborns dependent on?
The timing depends on the individual maturation and culture
From ages 3 to 6, the most rapid brain growth is in what area?
The frontal lobes
What does the frontal lobe enable?
Rational planning
From what ages is the frontal lobe growing at its most rapid speed?
From ages 3 to 6
What was Mark Rosenzweig’s and David Krech’s rat experiment?
They put one rat group in an enriched environment with playthings and other rats and the other group was put into a solitary environment with no other rats and no playthings. They were studying the effect this environment had on their brains.
What results did Rosenzweig and Krech obtain after their rat experiment?
The rats living in the enriched environment had developed a heavier and thicker brain cortex
In Rosenzweig’s and Krech’s rat experiment, after 60 days in the enriched environment by how much did the rats’ brain weights increase?
7 to 10 percent
In Rosenzweig’s and Krech’s rat experiment, after 60 days in the enriched environment by how much did the number of synapses increase?
About 20 percent
What is a baby who is born prematurely called?
Preemies
What are preemies?
Babies that are born prematurely
What three advantages do children 10 years later show when they have had skin-to-skin contact with their mothers as preemies?
- Better sleep
- Less stress
- Better cognitive development
What is a critical period?
An optimal period early in the life of an organism when exposure to certain stimuli or experiences produces normal development
What is an example of a skill that is primarily and easily learned during a critical period?
Language learning
In the United States, 25 percent of all babies walk by what age?
By 11 months of age
In the United States, 50 percent of all babies walk by what age?
Within a week after their first birthday
In the United States, 90 percent of all babies walk by what age?
By age 15 months
What creates our readiness to learn walking at about age 1?
Maturation - including the rapid development of the cerebellum
Where is the cerebellum located?
At the back of the brain
How can you reduce crib-death risk among babies?
By putting them to sleep on their back instead of stomach
The biological growth process called __________ explains why most children begin walking by about 12 to 15 months.
maturation
What are the two brain areas underlying memory?
Hippocampus and frontal lobes
What is infantile amnesia?
Describes the fact that we cannot recall memories from before the age of 4
What did Rovee-Collier realize in her home experiment?
She realized that, contrary to popular opinion in the 1960s, babies can learn
What was Rovee-Collier’s home experiment?
Her 2-month-old child was calmed by a crib mobile. Rove-Collier put an installation in place that allowed her son to kick a pedal to move the mobile. This experiment later showed that babies are capable of learning.
What is cognition?
All the mental activities associated with thinking, knowing, remembering, and communicating
What is a schema?
A mental concept or framework that organizes and interprets information
The following example is a representation of what?
“Having a simple schema for dog, for example, a toddler may call all four-legged animals dogs.”
Assimilation (interpreting our new experiences in terms of our existing schemas)
What is assimilation?
Interpreting our new experiences in terms of our existing mental schemas
What is accommodation?
Adapting our current understandings (schemas) to incorporate new information
What was the first country to legalize same-sex marriage?
The Netherlands
When did the Netherlands legalize same-sex marriage?
2001
According to Piaget, cognitive development consists of which four stages?
- Sensorimotor stage
- Preoperational stage
- Concrete operational stage
- Formal operational stage
During what ages is a child in the sensorimotor stage?
From birth to nearly age 2
What is the sensorimotor stage?
In Piaget’s theory, the stage during which infants know the world mostly in terms of their sensory impressions and motor activities
What is object permanence?
The awareness that things continue to exist even when not perceived / seen
What is an example of object permanence?
When you show a child a toy and put a blanket over it. When the child still knows that the toy is there but that it is just not visible right now, the child shows object permanence.
At what age do children develop object permanence?
At around 8 months
Shown a numerically impossible outcome such as removing one of two objects behind a screen, lifting the screen up and then still having two objects there, 5-month-old infants do react how?
They stare longer at the impossible outcome
During which ages are children in the preoperational stage?
From about 2 until about age 6 or 7
What is conservation?
The principle that quantity (mass, volume, and number) remains the same despite changes in shape
Before what age do children lack the concept of conservation?
Before about age 6
What is the preoperational stage?
In Piaget’s theory, the stage during which a child learns to use language but does not yet comprehend the mental operations of concrete logic.
Conservation is part of which of Piaget’s stages?
Concrete operational stage
When milk is poured into a tall, narrow glass, to a young child it suddenly seems like “more” than when it was in the shorter, wider glass. This is an example of what?
Of a child not being able to understand the principle of conservation
At what ages do children show an egocentric worldview?
Preschool children (age 2 to 6 or 7)
What is egocentrism?
In Piaget’s theory, the preoperational child’s difficulty taking another’s point of view
What is theory of mind?
Capacity to understand other people by ascribing mental states to them
Children with autism spectrum disorder have difficulty understanding what?
That another’s state of mind differs from their own
At what age do children enter the concrete operational stage?
At age 7
What is the concrete operational stage?
In Piaget’s theory, the stage of cognitive development during which children gain the mental operations that enable them to think logically about concrete events
A child from about 2 to 6 or 7 years of age is in which of Piaget’s stages?
Preoperational
A child from about 7 to 11 years of age is in which of Piaget’s stages?
Concrete operational
A child from about 0 to 2 years of age is in which of Piaget’s stages?
Sensorimotor
A child from about 12 years of age is in which of Piaget’s stages?
Formal operational
What is the formal operational stage?
In Piaget’s theory, the stage of cognitive development during which people begin to think logically about abstract concepts
At what age do children enter the formal operational stage?
At around 12
What are the two key milestones achieved during the sensorimotor stage?
- Object permanence
- Stranger anxiety
What are the two key milestones achieved during the preoperational stage?
- Pretend play
- Egocentrism
What are the two key milestones achieved during the concrete operational stage?
- Conservation
- Mathematical transformations
What are the two key milestones achieved during the formal operational stage?
- Abstract Logic
- Potential for mature moral reasoning
What is scaffold?
A framework that offers children temporary support as they develop higher levels of thinking. For example, when infants are learning how to walk, they often start by holding onto the clothes or hands of an adult or older child, who guides them. The infant will continue to do this until they have enough skills and strength to walk on their own.
What did Russian developmental psychologist Lev Vygotsky study?
He studied how a child’s mind feeds on the language of social interaction