Ch.11 Development Flashcards
Developmental Psychology
Study of continuity and change across the life span
Zygote
Fertilized egg that contains chromosomes from both an egg and sperm
Germinal Stage
Two week period that begins at conception in which zygote migrates back down the fallopian tube and implants itself in the wall of the uterus
Embryonic Stage
Period that lasts from the 2nd week until the 8th week in which cells begin to differentiate
Fetal Stage
Period that lasts from the 9th week until birth in which the fetus has a skeleton and muscles that allow movement
Myelination
Formation of fatty sheath around neuron axons
Placenta
Organ that physically bloodstreams of the mother and the embryo or fetus and permits exchange of certain chemicals
Teratogens
Agents that impair development like environmental poisons
Fetal Alcohol Syndrome (FAS)
Developmental disorder that stems from heavy alcohol by the mother during pregnancy
Infancy
Stage of development that begins at birth and lasts between 18 and 24 months
Motor Development
Emergence of ability to execute physical actions such as reaching, rasping, crawling and walking
Cephalocaudal Rule
Tendency for motor skills to emerge in sequence from the head to the feet
Proximodistal Rule
Tendency for motor stills to emerge in sequence from the center to the periphery
Cognitive Development
Emergence of ability to think and understand
Sensorimotor Stage
Period of development that begins at birth through infancy in which infants busy themselves with ability to sense
Schema
Theories about the way the world works
Assimilation
Infants apply schemas in novel situations
Accommodation
Infants revise their schemas in light of new information
Object Permanence
Belief that objects exist even when they are not visible
Childhood
Period at 18-24 months to 11-14 years
Preoperational Stage
Stage that begins about 2 years to 6 years, during which children develop preliminary understanding of the world
Concrete Operational Stage
6-11 years, children learn how actions or operations can transform the concrete objects of the physical world