Psychology Unit 6 Flashcards
Developmental Psychology
A branch of psychology that studies physical, cognitive, and social change throughout the life span
Three major themes of developmental psychology
Nature v nuture
Continuity and stages
Stability and change
Nature v Nurture in Developmental Psychology
Genes predispose our share of humanity and individual differences
Differences are strengthened by nurture
Continuity v Stages in Developmental Psychology
Slow continuous process of development
People pass stages in the same order (but not always the same time)
Research doubts that it’s neatly categorized by age
Who contributed a lot to stage theories?
Jean Piaget
Stability and Change in developmental psychology
Some characteristics are very stable: temperament, emotionality, happiness
Our personality gradually stabilizes
Less predictable: social attitudes (we learn new ways to cope)
We may change over time but still be the same as compared to others our age: a hard driven adult may be more mellow when older, but still be driven compared to other senior citizens
Zygote
The fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo
When is the germinal stage and what is it?
10 days after contraception, a zygote attaches to the carriers uterine wall
Embryo
The developing human organism from about 2 weeks after fertilization through the second month
When does an embryo’s organs begin to form and function
6 weeks
When does an embryo look like a human?
9 weeks
Fetus
The developing human organism from 9 weeks after contraception to birth
When is it safe to say that a fetus will be born with a good chance of survival even if born prematurely? Why?
6 months. The stomach is developed enough
Immediately after birth, newborns prefer their fathers voice to their mothers
False, mothers
Ways prenatal babies demonstrate learning
Preferring their mothers’ language after they are born if its what the mother spoke at pregnancy
Respond less to repeated vibrational stimuli
Teratogens
(Literally “monster makers”) agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm
Affects of teratogens on prenatal development
- Reduces activity in the central nervous system
- Primes them to taste and alcoholism
- Dangerously low birth weight
- Birth defects
- Future behavior problems
- Lower intelligence
Fetal alcohol syndrome (FAS)
Physical and cognitive abnormalities in children caused by a pregnant woman’s heavy drinking. In severe cases, signs induce a small, out-of-proportion head and abnormal facial features
Epigenetic Effect
Alcohol leaving chemical marks on DNA that switch genes abnormally on or off
Teratogen examples
Alcohol, smoking, stress
Newborn relfexes: poke a babies cheek
Baby will turn towards the poke (simulates looking for nipple)
Startle reflex
When arms and legs spring out, quickly followed by fist clenching and loud crying
Grasping reflex
Habituation
Decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a stimulus, their interest wanes and they look away sooner
Maturation
Biological growth processes that enable orderly changes in behavior, relativley uninfluenced by experience
Rate of developing nerve cells in womb
One-quarter million per minute
When is the most rapid growth in the frontal lobe
3 to 6 years old (requires most amount of energy)
Why do baby brains increase in size rapidly after in early days after birth?
The brain’s neural networks that enable talking, walking, and remembering have a growth spurt
Last brain parts to develop
Association areas with thinking, memory, and language
Pruning process
The “use-it-or-lose-it” process of shutting down unused links in neurons
Most babies can walk at about
11-15 months
We consciously recall a lot before from before age 4 (true or false?)
False, a little (infantile amnesia)
Growth vs. Development
Growth: getting bigger
Development: a change occurs (ex. Brown to grey hair)
Morals vs. Ethics
Morals: is it good if we raise a child like this
Ethics: how do we do it
Babinski reflex
Run finger down arch of foot, baby will curl toes to simulate grabbing a tree branch
Moro reflex
Rest hand on torso then quickly release, babies will flair their arms to be easier to catch
APGAR Test
(7-10 is normal)
A = activity of muscles
P = pulse
G= grimace (suctioning mucus out of nose and mouse makes them flinch)
A = appearance (color, too yellow could mean problem in liver)
R = respiration
Jean Piaget
Studied children’s cognition and developed intellegence tests
Piaget’s core idea
Our intelligence progression reflects an unceasing struggle to make sense of our experiences. The maturing brain builds schemas
Cognition
All the mental activities associated with thinking, knowing, remembering, and communicating
(The kangaroo raked the car)
Schema
A concept or framework that organizes and interprets information
Assimilation
Interpreting our new experiences in terms of our existing schemas
Accommodation
Adapting our current understanding (schemas) to incorporate new information
Piaget’s two concepts in schemas
- We assimilate new experiences
- We accommodate new experiences
Piaget’s four stages of cognitive development
- Sensorimotor
- Preoperational
- Concrete operational
- Formal operational
Sensorimotor Stage
In Piaget’s theory, the stage (from birth to nearly 2 years of age) during which infants know the world mostly in terms of their sensory impressions and motor activities
Why are young babies so amused by peekaboo
While in the sensorimotor stage, they don’t have any concept of object permanence. Thus, they really think its gone. “If I can’t sense it, it doesn’t exist”
Object Permanence
The awareness that things continue to exist even when not perceived
Preoperational Stage
In Piaget’s theory, the stage (from about 2 to 6 or 6 years of age) during which a child learns to use language but does not yet comprehend the mental operations of concrete logic
Before the age of 6, Piaget says thay children lack the concept of
Conservation
Conservation
The principle (which Piaget believed to be part of concrete operational reasoning) that properties such as mass, volume, and number remain the same despite changes in the forms of objects
Why is pretend play significant to the transition between 2 to 3 year olds
It shows they can now symbolically think
Egocentrism
In Piaget’s theory, the preoperational child’s difficulty taking another’s point of view
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