Chapter 4:. Infancy: Physical Development. Infant Physical Development:. Cephalocaudal Proximodistal Differentiation. Cephalocaudal Development:. Growth is more rapid in infancy than in any other period after birth.
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Infancy: Physical Development
What are motor skills? The activity of the muscles which leads to changes in posture, movement, and the coordination of movement with the senses.
Motor Skills Consist of:
Is adaptive in that it prevents suffocation.
Reflexive at first, then at 4-6 months infants grasp objects successfully
a. Ulnar: (4-6 mo) Holding objects clumsily between their fingers and their palm.
b. Pincer: (9-12 mo) Using the thumb and first finger to pick up tiny objects.
a. Roll over both ways: 6 mo
b. Sit up: 7 mo
c. Crawl by: 8-9 mo
d. Creeping: about 1 mo after crawling
e. Standing by 8-9 mo (overlaps with creeping and crawling)
f. Walk with support: 8-9 mo
g. Pull to stand: 10-11 mo
h. Walking by 12-15 mo
i. Climb steps, kick ball, walk backward, jump by 2 years
Toddlers fall frequently because they are bow legged, inexperienced, and top heavy
“like a bowling ball on toothpicks”