This document provides an overview of child development. It discusses historical views of childhood including the original sin view, tabula rasa view, and innate goodness view. It also outlines key aspects of the modern study of child development including methods used, theories proposed by scientists like Gesell and Freud, and factors that influence children's development like culture, ethnicity, socioeconomic status and gender. The document emphasizes improving children's lives through health, parenting, education and resilience. It also examines developmental processes involving biological, cognitive and socio-emotional changes throughout the lifespan.