Lifespan Devel. chapter 5 quiz
height is especially variable among children of
African heritage because they are more genetically diverse
many children diets are deficient in
iron, zinc, and calcium
one reason some young children have frightening nightmares or sudden terrors
increased activity of the amygdala
each year from age 2-6, well nourished children add almost
3 inches in height and gain about 4 1/2 pounds in height
by age 2 a child's brain weighs _____% of what it will in adulthood
75%
the just-right phenomenon is normal in children under six but would be pathological for
adults
a tiny brain structure that registers emotions, particularly fear and anxiety
amygdala
a band of nerve fibers that connects the left and right sides of the brain
corpus callosum
a brain structure that is a central processor of memory, especially memory for locations
hippocampus
the underlying cause of impulsiveness and preservation
immaturity of the prefrontal cortex
when some children insist on eating certain foods prepared and presented in a certain way
just-right phenomenon
Literally, sidedness, referring to the specialization in certain functions by each side of the brain, with one side dominant for each activity.
lateralization
an environmental hazard that has been thoroughly researched
lead
parts of the brain that are crucial in the expression and regulation of emotion
limbic system
the ratio of weight to height is
lower at age 5 than at any other age in the entire lifespan
BMI
mody mass index
growth of the corpus callosum makes communication between the two brain hemispheres
more efficient
a fatty substance that speeds the transmission of nerve impulses from neuron to neuron
myelin
the primary reason for faster thinking is new and extensive
myelination
the process by which axons become coated with myelin
myelination
improves dexterity and advances fine motor skills which involve small body movements but they are still difficult to master
practice
in the 1970's it was proved that exposure to lead
reduces intelligence and increases behavior problems in young children
failure of the corpus callosum to develop normally results in
serious disorders and is one of many possible causes of autism
by age 2, extensive ________ and _________ of the dendrites has already taken place
sprouting and pruning
the corpus callosum of a left-handed person is often _______ than that of a right-handed person
thicker
tooth decay is the most common disease of
young children in developed nations