Chapter 2 Theories of Development o2.1. What is development? Development refers to the ways people grow adapt, and change during their lifetimes. o physical development, personality development, socioemotional development, cognitive development(thinking), and language developmentChapter 2 Theories of Development ⚫ 2.1.Whatis development? ⚫ Development refers to the ways people grow, adapt, and change during their lifetimes. ⚫ physical development, personality development, socioemotional development, cognitive development(thinking), and language development