PSY 324 Lecture Notes - Lecture 4: Physical Attractiveness, Age 13, Ejaculation
Document Summary
Humans experience great physical growth for about 20% of their total years: adaptive function: allows more time to acquire knowledge and skills before adulthood. Growth is fastest from birth to toddlerhood, begins to slow in early childhood: children grow about 2-3 inches taller and about 5 pounds heavier each year until puberty. In adolescence, children gain about 10-12 inches in height and about 50-75 pounds in weight. Body size (mainly height and weight) are often charted in two ways: distance curve: size based on average for age, velocity curve: rate of growth based on average for age. Likely why adolescents sometimes appear awkward and out-of-proportion. By gender: boys and girls grow about the same during childhood, in adolescence, differences appear due to the action of sex hormones. Peak body fat in infancy and toddlerhood, then children slim down in early and middle childhood.
