AP Psychology Unit 3.1–3.6: Developmental Psychology Notes is a comprehensive study resource designed to help students understand how people grow and change across the lifespan. This set of notes covers physical, cognitive, social, emotional, and language development, while also connecting major theories from Piaget, Vygotsky, Erikson, Bronfenbrenner, and others to real developmental stages and examples. It includes clear explanations, key vocabulary, developmental milestones, and practice multi