Chapter 11 Flashcards
developmental psychology
the study of continuity and change across the life span
zygote
a fertilized egg that contains chromosomes from both a sperm and an egg
germinal stage
the 2-week period of prenatal development that begins at conception
embryonic stage
the period of prenation development that lasts from the second week until about the eight week
fetal stage
the period of prenatal development that lasts from the ninth week until birth
myelination
the formation of a fatty sheath around the axons of a neuron
teratogens
agents that damage the process of development, such as drugs or viruses
fetal alcohol syndrome
a developmental disorder that stems from heavy alcohol use by the mother during pregnancy
infancy
the stage of development that begins at birth and lasts between 18 and 24 months
motor development
the emergence of the ability to execute physical action
refelxes
specific patterns of motor response that are triggered by specific patterns of sensory stimulation
cephalocaudal rule
the “top to bottom” rule that describes the tendency for motor skills to emerge in sequence from teh head to the feet
proximodistal rule
the “inside to outside” rule that describes teh tendency for motor skills to emerge in sequence from the center to the periphery
cognitive development
the emergence of the ability to think and understand
sensorimotor stage
a stage of development that begins at birth and lasts through infacny in which infants acquire information about the worldby sensing it and moving around within it