Final answer:
Life Span Developmental Psychology is the scientific study of how individuals change and grow from conception to death, encompassing physical, cognitive, and psychosocial changes.
Step-by-step explanation:
Life Span Developmental Psychology is the scientific study of how individuals change and grow from conception to death. It focuses on various aspects of development, including physical, cognitive, and psychosocial changes. Developmental psychologists analyze the different stages of development across the lifespan, examining how individuals develop socially, emotionally, and intellectually in order to gain a comprehensive understanding of human development.