PSY 230 Chapter Notes - Chapter 4-6: Malnutrition, Soltyrei, Parallax

• School: University of Miami
• Department: Psychology
• Course: PSY 230
• Professor: Christine Delgado

Document Summary

Between birth and 2 years, average height increases from 19 to 32 inches and average weight increases from 7 to 22 pounds. An interesting rule of thumb is that boys achieve half their adult height by. What is not so obvious from growth charts is that increases in height and weight are not steady. Looking at the average increase in weight and height annually- as opposed to the average total weight and height for each year- gives quite a different picture of the pattern of physical growth. Growth is fairly steady through the preschool and elementary-school years: about. 3 inches and 7 to 10 pounds each year is gained. This growth spurt begins 1 to 2 years earlier in girls. During childhood, muscles become longer and thicker as individual fibers fuse together. This process accelerates during adolescence, particularly for boys. Fat continues to accumulate rapidly during the first year after birth- baby fat.