HD FS 276 Lecture 9: lecture
9 Feb 2017
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Document Summary
Average cost of raising a child in a middle-class family from birth-17 years of age. Newborn: average: 20 inches long; 7 pounds. Birth weight = decreasing in the u. s. Double birth weight by 4 months; triple by first birthday. Infants grow about 1 inch per month during the first year = 20lbs; 30in. At 2 years = approximately 26 to 32lbs. At 2 years, 32 to 35in tall: nearly half of their eventual adult height. Able to move and explore their world: more independence. Increase motor skills: improving balance and coordination. Directionality how the body proportions change: head to toe (cephalocaudal, center of body outward (proximodistal) Canalization = catch up : development tends to follow and return to a normative course. Brain"s structure and function are plastic = can be changed by experience. Reflex simple, involuntary response to certain stimuli. Differentiation: general to specific motor (muscle) control, progression from gross, immature movement to well-controlled, intentional, precise movement.
