Ch. 5 - Body and Mind Flashcards
growth patterns in early childhood
- weight and height increase but the relationships between the two change
- low avg BMI
- children become slimmer as lower body lengthens
- centre of gravity shifts from breastbone to belly button
How does appetite change between ages 2 and 6 and what are some possible repercussions of not keeping that in mind?
appetite decreases.
can lead to overfeeding (low-income family cultures guarding against undernutrition and not having access to healthier food), causing illnesses related to obesity
food allergies
increased in recent years; about 8% of children have a food allergy, usually to a common, healthy food
oral health
teeth are affected by diet and illness; poor oral health in early childhood is detrimental to permanent tooth development
brain development - size
by age 2, child brain weighs 75% of adult brain
by age 6, child brain weighs 90% of adult brain
notable benefits of maturation of prefrontal cortex from ages 2-6
- sleep becomes more regular
- emotions become more nuanced and responsive
- temper tantrums decrease or subside
- uncontrollable laughter/tears less common
corpus callosum
part of the brain that grows and myelinates rapidly in early childhood; band of nerve fibers connecting L and R hemispheres; facilitates communication
lateralization
refers to specialization in certain functions by each hemisphere, with one side dominant for each activity
Note: L/R distinction is exaggerated, as no one is exclusively L or R brained
myelin
fatty coating on axons that speeds signals between neurons
primary reason for faster thinking
new and extensive myelination
impulsiveness
before maturation of the prefrontal cortex, young children jump from task to task, unable to stay quiet
perseveration
phenomenon where some kids stick to one thought/action and are unable to quit.
limbic system
parts of brain that are crucial in expression and regulation of emotions, including (1) amygdala, (2) hippocampus, (3) hypothalamus
amygdala
tiny brain structure that registers emotions, esp fear/anxiety
hippocampus
brain structure central processor of memory (esp locations)
hypothalamus
brain area responsible to the amygdala and hippocampus to produce hormones that activate other parts of the brain and body
preoperational thought
before logical operations/reasoning
child’s verbal ability permits symbolic thinking; language frees children from limits of sensorimotor experience
obstacles to logic
centration egocentrism focus on appearance static reasoning irreversibility