This document discusses the developmental stages of youth from early adolescence through late teens. It describes the cognitive, social, emotional, and moral characteristics typical at each stage. In early adolescence (ages 12-14), youth experience rapid physical changes, seek acceptance from peers, and develop self-consciousness. Mid-adolescence (ages 15-18) involves further physical maturity, strong conformity to peers, mood swings, and developing independence from adults. The document stresses understanding youth development and meeting their needs appropriately at each stage.