CHD-2220 Chapter Notes - Chapter 5: Synaptogenesis, Longitudinal Study, Headbanging

• School: FSU
• Department: Family and Child Sciences
• Course: CHD-2220
• Professor: D R.M U R R A Y K R A N T Z

Document Summary

Chapter 5 perceptual, physical, and motor development in infancy. First human contact = newborn senses physical presence of caregivers and to react physically to caregiving behaviors. Perception and control of movement abilities emerge rapidly within first weeks/months of life. Infancy is a time of extraordinary growth in height/weight and dramatic change in body proportion. Average newborn = 7 pound and 20 in. long. Fastest period of growth in first two years. Birth-weight double by 5 months and triples by 12 months. Rate of growth tapers off from first to second year. Babies tend to grow in spurts (rather than even progression) Rapid growth can be challenge to physical strength of caregivers (parent) Parents must gain in muscle strength with increasing weight of baby some suffer from physical strain. Cephalocaudal (head-to-tail) principle: growth of the head and upper body precede growth in the lower body: birth head is half fetus(cid:859) le(cid:374)gth, adult head is only 12% of body length.