This document provides an overview of human growth and development across the lifespan. It discusses the typical physical, mental, emotional, and social changes that occur during seven main life stages: infancy, early childhood, late childhood, adolescence, early adulthood, middle adulthood, and late adulthood. Key developmental theorists and their stages are also outlined. The document then provides more detailed information about physical, mental, and developmental changes during infancy, including rapid growth, motor skill development, sensory maturation, and the beginnings of object permanence.