This 14-page workbook (17 with key), for AP Psychology Unit 3.4: Cognitive Development Across the Lifespan, helps students build a strong understanding of how thinking, reasoning, memory, language, problem-solving, and decision-making develop from infancy through later adulthood. What’s Included: Background Reading: A detailed student-friendly reading that explains major concepts related to cognitive development, including Piaget’s stages of cognitive development, schemas, assimilation, acc