EDS200H5 Chapter Notes - Chapter 5: Depth Perception, Primitive Reflexes, Language Acquisition Device

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2 Dec 2016
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Chapter 5- physical and cognitive development in infancy. Infants physical development in the first 2 years after birth is extensive. Full term newborns are 48-53 centimeters and weigh 2,500-4,000 grams. Typically in the first several days the newborn loses 10% of its initial birth weight secondary to the loss of meconium and extracellular fluid as well as limited food intake. Once an infant has adjusted to sucking, swallowing and digesting it grows rapidly gaining 150-210 grams weekly till 5/6 months, birth weight is typically doubled. Infants grow about 2. 5 cm per month during the first six months. Cephalocaudal pattern: the sequence in which the greatest growth in size, weight and feature differentiation gradually works down from top to bottom. Top parts of the head- eyes and brain grow faster than the lower parts such as the jaw. Proximodistal pattern: the sequence in which growth starts at the center of the body and moves toward the extremities.

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