PSYCH 130 Chapter Notes - Chapter 5.1: Embryonic Disc, Wicket-Keeper
25 Nov 2017
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Document Summary
Primates experience a prolonged period of physical growth. By ensuring that children remain dependent on adults, it gives them added time to acquire knowledge and skills essential for life in a complex social world. Rapid changes during infancy and slows during early and middle childhood. Puberty leads to a sharp acceleration in growth. Distance curve: plots average size of a sample children at each age, indicating typical yearly progress toward maturity. Girls" pubertal growth spurt occurs two years earlier than boys". Height complete at around 16 for girls and 17. 5 for boys. Velocity curve: plots average amount of growth at each yearly interval, revealing the exact timing of growth spurts. Slower constant rate during early and middle childhood. Sharp increase in early adolescence then sharp decrease approaching adult size. Cephalocaudal trend: during the prenatal period, the head develops from the primitive embryonic disk followed by lower part of the body. After birth trunk and legs gradually pick up speed.
