PSYB20H3 Chapter Notes - Chapter 5: Carei, Immune System, Physical Abuse
Document Summary
Chapter 5: physical development and health, birth to age 3. Principles of early growth and physical development: an infant"s head is gigantic compared to the rest of the body. Highlights the cephalocaudal and proximal principles of early growth. A newborn baby"s head is disproportionately large. At 1 year, the brain is 70% of its adult weight, but the body is only 10-20% of its adult weight. The head becomes proportionately smaller as the child grows in height and lower parts of the body develop: sensory and motor development follows the same (cephalocaudal) principle. Should begin immediately after birth and should continue for at least 1 year. Lower risk of sids and postneonatal death. Better visual acuity, neurological development, and long-term cardiovascular health. Less likely to develop obesity, asthma, eczema, diabetes, lymphoma, childhood leukemia, and hodgkin"s disease. Less likely to show language and motor delays. Score slightly higher on cognitive tests at school age and into young adulthood.
