Exam 4 Flashcards
Developmental psychology
study of continuity and change across the lifespan
Zygote
fertilized egg
Prenatal development
germinal stage
embryonic stage
fetal stage
Germinal stage
2 week period that begins at conception
* cells are dividing
Embryonic stage
period that starts around the 2nd week after conception until 8th week
has arms, legs, beating heart
Fetal stage
lasts from the 9th week after conception until birth
has a skeleton and muscles, capable of movement
Teratogen
any substance that passes from mother to unborn child and imparts development
ex. lead in water
Fetal alcohol syndrom (FAS)
developmental disorder that stems from heavy alcohol use by the mother during pregnancy
Infancy
stage of development that begins at birth and lasts between 18-24 months
Motor development
emergence of ability to execute physical actions
ex. reaching, grasping, crawling
Two general rules of behaviors
cephalocaudal rule
proximodistal rule
Cephalocaudal rule
top to bottom
tendency for motor skills to emerge in sequence from the head to the feet
infants gain control of head first
Proximodistal rule
inside to outside
tendency for motor skills to emerge in sequence from the center to the periphery
infants learn to control their trunks before their elbows and knees
Cognitive development
infants and children gain the ability to think and understand four stages sensorimotor stage preoperational stage concrete operational stage formal operational stage
Sensorimotor stage
begins at birth and lasts through infancy
infants are using their ability to sense and move to learn about the world
learning to control bodies and senses
Schemas
theories about the way the world works
infants do this by exploring the world with their eyes, mouths, and fingers
Assimilation
happens when infants apply their schemas to novel situations
Accommodation
infants revise their schemas in light of new information
Object permanence
fact that objects exist even when they are not visible
Childhood
period that begins at about 18 months to 24 months and lasts until about 11 or 14 years
* children enter childhood at the preoperational stage * exit childhood at concrete operational stage
Preoperational stage
stage of cognitive development 2-6 years old
children develop a preliminary understanding of the physical world
learning about basic things
Conservation
notion that quantitative properties of an object are invariant despite changes in the object’s appearance
Formal operational stage
final stage of cognitive development that begins around the age of 11
children learn to reason about abstract concepts
learn abstract thinking
Egocentrism
failure to understand that the world appears different to different people
preoperational stage