Exam #2 Flashcards
myelinization
the process of developing the sheath, the sequence follows both cephalocaudal (from head to toe) and proximodistal (organs then everything else) pattern
synaptogenesis
the process of synapse development
cortex
is the least developed part of the brain at birth, convoluted gray matter that wraps around the midbrain, involved in perception, body movement, thinking, and language.
reticular formation
regulates attention and concentration
babinksi reflex
stroking bottom of the foot and splaying toes, then curling them in
moro reflex
making a loud noise then startling them, or throwing arms outward and arching back
STARTLE REFLEX
micronutrient malnutrition
a deficiency of certain vitamins and minerals
macronutrient malnutrition
results from a diet that contains few calories
marasmus
severe calorie deficit
Infants with marasmus weigh less than 60% of what they should at their age, and many suffer permanent neurological damage from the disease.
kwashiorkor
a disease where infants weaned too early to low protein foods. can lead to permanent brain damage and severe health complications
sudden infant death syndrome
a phenomenon where an apparently heathy infant dies suddenly and unexpectedly
group differences in infant mortality
lowest- chinese americans
highest rate - african americans, native hawaiians, and native americans
due to suffering from congenital abnormatlities and low birth weight
sensorimotor stage (piaget)
from birth to 18 months, infants use sensory and motor schemes to act on the world around them
primary circular reactions
baby engaging in repetitive actions, exploring the world in a curricular manner through their bodies
secondary reactions
repetitive behaviors that involve the outside world, baby is now trying to produce an effect on the outside world (like shaking rattle to catch attention of family members)
tertiary circular reactions
infants actively exploring the environment, and infant is sometimes experimenting
means-end behavior
involves the baby coordinating activities to produce an effect. using means to produce an outcome
behaviorist (skinner)
claim that infants learn language through parental reinforcement of wordlike sounds and correct grammar.