Chapter 4 - Physical Growth

Chapter 4 - Physical Growth - Chapter 4: Bigger, Stronger,...

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02/16/10 Chapter 4: Bigger, Stronger, Better AKA Physical Growth I. Physical Growth: Height and Weight Increases in weight and height are not linear in nature! Two time points of rapid growth: o The first year of life – gain of about 15 pounds and 10 inches o Adolescence – gain of 16 pounds and 4 inches per year Young children – top heavy! o Disproportionate head and trunk to bottom half of body Variations exist in ALL aspects of development o Across cultures – underdeveloped countries = smaller stature o Across time – individuals taller now than in the past o Across individuals – person to person variation Average and normal = not the same thing! o Average – mean of a population o Normal – expected Chart of healthy vs CdLS boys o Birth of average baby boy – 7.5 pounds o Birth of Osika’s baby girl – 4.5 pounds o 18 months of average baby boy – 22 pounds o 18 months of Osika’s baby girl – 12 pounds II. Mechanisms of Physical Growth DNA: o Tall + tall = tall
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o Short + short = short o Tall + short = average Sleep: o Growth hormone – released during sleep
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This note was uploaded on 04/29/2011 for the course PSYC 2350 taught by Professor Miller during the Spring '08 term at University of Houston.

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Chapter 4 - Physical Growth - Chapter 4: Bigger, Stronger,...

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