According to Levinson, what is the set of phases called that an adult progresses through?

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Levinson proposed that there are distinct stages or seasons of adult development, including early adult transition, entering the adult world, Age 30 Transition, settling down, mid-life transition, entering middle adulthood, the mid-life re-evaluation, and late adulthood. Therefore, the set of phases that an adult progresses through is called seasons of life.

According to Levinson, What Is the Set of Phases Called