PSYCH211 Chapter Notes - Chapter 11: Permanent Teeth, Thumb Sucking, Dental Caries

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH211
• Professor: Kathleen Bloom

Document Summary

Psychology 211 chapter 11: physical development in middle childhood. By age 6, the brain has reached 90 percent of its adult weight, and the body grows slowly: average north american child weighs 45 pounds and is 3 feet. Between 6 and 8, girls are shorter and lighter than boys. In early childhood, girls have slightly more body fat and boys more muscle. Worldwide, a 9inch gap exists between the smallest and largest 8 year olds. The shortest children are columbian, burmese, thai, vietnamese, ethiopian, and bantu. Tallest children come from czech, dutch, latvian, norwegian, swiss and africans. Long, lean physiques are typical in hot tropical regions and short stocky ones in cold arctic areas. Tallest usually live in developed countries where food is plentiful and diseases are controlled. Small children live in less developed, where poverty, hunger and disease are common. When families move from poor to wealthy nations their children grow taller and a longer legged body shape.