This document discusses growth, development, and maturation. It defines growth as physical changes that can be measured, such as increases in height, weight, and bone size. Development is defined as increases in function and skills. Maturation refers to physical changes driven by genetic influences, though the timing can be influenced by the environment. The document notes that growth and development are independent but interrelated processes influenced by both genetic and environmental factors. It outlines several stages of development, including trust vs. mistrust in infancy, autonomy vs. shame and doubt in toddlerhood, initiative vs. guilt in early childhood, industry vs. inferiority in middle childhood, identity vs. role confusion in adolescence, and intimacy vs. isolation in