Chapter 9 Flashcards
What is Development?
Refers to the continuous change in human capabilities throughout life.
Developmental changes occur on 3 levels. What are they?
Physical processes: involves change in biological nature
Cognitive processes: change in individual’s thought, intelligence and language.
Socioemotional processes: changes in an individual’s relationships with others, in emotion and personality
What can we say about
the studies done on development?
Because age is a variable that cannot be manipulated, studies on the relationship between age and other things are by definition correlational in nature.
Describe how a cross-sectional study on development would work
Number of people of different ages are assessed at one point in time, differences are noted. By examining how the ages relate to characteristics measured, they can find out whether younger differs from older people.
What is one fault in cross-sectional studies of development
Cohort effects: differences between individuals that stem not from their ages, but rather from the time period they were born in. For example, people born in 1940 might be less likely to attend college than 1990.
What is one type of study on development that does NOT have cohort effects?
Longitudinal studies: assesses the same participants multiple times over a lengthy period of time. They can find out if age groups differ AND whether a certain characteristic in the same individuals change as they age
What is nature and nurture
How does nature and nurture influence development?
Nature: refers to individual’s biological inheritance (genes)
Nurture: refers to individual’s environmental and social experiences.
We know both influence development but we do not know to which degree for each. However we know environmental factors can help or harm the developing person. Phenylketonuria (PKU) is the inability to digest sweeteners used in sodas. Diet restrictions can help.
Prenatal development begins with Conception. What is that?
It is when a single sperm cell merges with an ovum to produce a zygote, a cell with 23 chromosomes from each parent
The development of zygote to fetus is divided into 3 periods, what are they?
Germinal period (weeks 1-2): begins with conception. After 1 week, zygote made up of 100-150 cells. After 2 weeks, the mass of cells has attached to uterine wall.
Embryonic period (weeks 3-8): the rate of cell differentiation intensifies, support systems for cells develop, beginning of organs appear, neural tube (become spinal cord later) appears. Within 4 weeks of conception, the neural tube is formed and closes, encased inside embryo. At the end, heart begins to beat, arms and legs become more differentiated, face starts to form and intestinal tract appears.
Fetal period (months 2-9): At 2 months, fetus is the size of a kidney bean and starts to move around. At 4 months, fetus is 5 inches long and 5 ounces. At 6 months, fetus has grown to 3/2 pounds. Last 3 months, organ functioning increases, fetus puts on hella weight and size, adding baby fat.
What is a teratogen?
What are some examples of threats to the fetus
It is any agent that causes a birth defect. These include chemical substances ingested by mother, or certain illnesses
Fetal alcohol spectrum disorders: a cluster of abnormalities and problems that appear in the offspring of mothers who drink alcohol heavily during pregnancy.
An infant is capable of sitting upright, standing, stooping, climbing and often walking. what age are they in?
1+ years old
When do rapid gains occur in activities for children?
During the second year. Such activities are running and climbing.
What is one of the most remarkable motor skill attained by infants? What processes are involves in this motor skill?
It is the ability to reach for things, emerges in infants 3-5 months old
It involves
Sensory capacities: being able to see or hear the object
Motivation: wanting to grasp the object
Attention: being able to focus on a particular thing
Bodily control: coordinating movements and posture
Learning: getting positive reinforcement from getting the object of their desire.
What is one way psychologists can study infants if they cant tell us what they see hear or feel?
What did researchers find using this technique?
Psychologists use preferential looking: a technique that involves giving an infant a choice of what object to look at, repeatedly presented in different locations.
They found out that as early as 7 days old, infants are already engaged in organized perception of faces and are able to put together sights and sounds.
At 3 months, infants prefer real faces over scrambled faces.
By 6 months, babies can detect human faces more quickly than animal faces.
What changes occur in the brain during development?
Myelination begins prenatally and continues after birth till young adulthood.
During childhood, the number of synaptic connections increase dramatically.
From 3-6 years, the most rapid growth takes place in the frontal lobe areas.
What is Piaget’s theory of cognitive development?
He believed that children actively construct their cognitive world as they go through the 4 of stages (sensorimotor, pre-operational etc.). In his view, children use schemas to make sense of their experience.
What are 2 processes responsible for how schemas develop?
Assimilation: occurs when individuals incorporate new information into existing knowledge. It is using existing schemas in a new way. For example, strategies with romantic partners that worked in the past are used to resolve current conflict with spouse.
Accommodation: occurs when individuals adjust their schemas in response to new information. Existing schemas can be changed and new schemas can be developed.
According to Piaget, we go through 4 stages in understanding the world. What are they?
Sensorimotor stage (birth-2 years)
Preoperational stage (2-7 years)
Concrete Operational stage (7-11)
Formal Operational stage (11-15 and continues through adult years)
What happens in the Sensorimotor Stage? What is the most important event that happens in this stage?
Infants are able to understand the world by coordinating sensory experiences with motor actions, hence sensorimotor. The most important event in this stage is object permanence. It is Piaget’s term for understanding that objects and events continue to exists when they cannot directly be seen, heard or touched. Once this is learned, the infant can think about future events.
What are Operations?
They are mental representations of the object that are reversible. Not understanding this fact is what separates preoperational thought from more mature thinking
What happens in the Preoperational stage?
Preoperational children have difficulty understanding the notion of reversibility. The child has not grasped the concept of conservation: the belief in the permanence of certain attributes of objects despite some changes.
Preoperational children are also egocentric since they cannot put themselves in someone else’s shoes.
What happens in Concrete Operational Stage?
It involves using operations and replacing intuition with logical reasoning in concrete situations. One important skill in this stage is the ability to classify things into different sets/subsets and to consider their interrelations. The song “one of these things is not like the others” was used to coax you into concrete operations.
What happens in Formal Operational stage?
This stage uses thought that is more abstract and logical than concrete operational thought.
1. they can make predictions using logic to come up with hypotheses about the future.
2. They can conceive hypothetical possibilities, called idealistic thinking.
3. They use hypothetical-deductive reasoning: devising plans to solve problems and systematically testing solutions.