The document discusses several key aspects of physical, cognitive, social, and personality development that occur during early adulthood between the ages of 20-40. Physically, development is typically complete though the brain continues growing. Socially, forming intimate relationships becomes a focus as does choosing a career path and potentially becoming a parent. Adjusting to demands of higher education, relationships, careers, marriage, divorce, and parenthood are all discussed as important developmental tasks during this life stage.