PSYC 304 Lecture Notes - Bulimia Nervosa, Ulnar Nerve
3 Dec 2012
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Document Summary
Maturation and growth, development of the brain, motor development, puberty and its psychological impact. Changes in height and weight: rapid growth in first two years. growth slows until spurt in puberty. Baby learns to lift their head while on their stomach at a very early age. One of the first things that needs to happen is a strengthening of neck muscles, because babies heads are over 9000 pounds. They learn to roll over soon after that. They can sit without support when they"re about 8 months old, and crawl at 9. They can stand at about 14 months and walk shortly after that. Fine motor development: voluntary reaching emerges at 3 months. this is different from initial prereaching. Ulnar grasp emerges at 4-5 months, and pincer grasp emerges from 6-12 months. Adolescent growth rate: girls at about 10. 5, boys at about 13 (peak ages of 12 and 14 respectively)
