The Life: Cycle Completed

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While Erikson originally established eight stages of psychosocial development, his wife and collaborator, Joan M. Erikson, added a ninth stage in this work to address the unique challenges of very old age (the 80s and 90s). The life cycle completed

The phrase likely refers to , the final book by renowned psychoanalyst Erik H. Erikson . A "deep feature" or major contribution of the book's extended version is the introduction of a Ninth Stage of human development. The Ninth Stage You can find more details on this work