The document discusses three domains of human development: physical, cognitive, and psychosocial. Physical development involves the growth of the body and brain as well as motor and sensory skills. Cognitive development refers to the capacity for learning, speaking, understanding, reasoning, and creating. Psychosocial development includes social interactions, emotions, attitudes, self-identity, personality, beliefs, and values. Human development occurs across the lifespan and is influenced by heredity, environment, and maturation. The document also distinguishes between personal development, which is one's own growth within these three domains, and personality development.