Lifespan theory distinguishes between normative events (expected transitions like retirement, menopause, or a toddler’s "terrible twos") and non-normative events (unexpected trauma or winning the lottery).
Maya smiled. She placed the lens on her desk, next to her worn copies of Erikson, Piaget, and Bowlby. Every theory is just a lens, she thought. But with the right one, even a cracked life can come into focus. Lenses Applying Lifespan Development Theories In Counseling