Human Growth and Development / Unit 12 HGD 1661 review, 2 to 3 minutes
Adult Stage Theories and Their Limits
The idea
Several theorists extended Erikson's stages across adulthood. Erikson placed intimacy versus isolation in early adulthood, followed by generativity and integrity. George Vaillant, drawing on the Harvard Study of Adult Development, endorsed Erikson's sequence and added a stage of career consolidation between intimacy and generativity. Daniel Levinson described seasons of life: an early adult transition around seventeen to twenty-two, then an era devoted to building a life of work, marriage and home, often guided by a mentor; his later work with women found they faced greater obstacles in combining career and family. Gail Sheehy, a journalist, popularized named decades of adult life, such as the "tryout twenties." These theories share features. They offer vivid, memorable sequences. They drew largely on men, on small samples, and on single cohorts, often measured at one point in time.
In practice
Levinson's portrait of a man settling his career by his thirties, set beside a woman of the same cohort whose career was interrupted by caregiving and whose seasons arrived in a different order.
Where people slip
The misconception is that adult life unfolds in fixed, age-linked stages. The research record is more varied. Vaillant himself argued that Levinson's cross-sectional design led to the conclusion of an inevitable midlife crisis, and in Vaillant's own longitudinal data a midlife crisis was rare. Cohort effects matter: a sample of men born in one era cannot show what adulthood looks like for everyone. The stage theories remain useful as descriptions of common tasks, and exam items name them. For the exam, match each theorist to the claim: Erikson's intimacy versus isolation, Vaillant's career consolidation, Levinson's seasons and mentor, and Sheehy's popular passages, and know the shared criticism of limited samples.
Your place on the trail
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