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Abstract
The study of man's life cycle has always inspired minds, in any event ever since philosophers and writers have been studying the "seasons" of life. On the other hand, as an object for scientific study human life has a more recent history and assumes different contours depending on the disciplines involved in this study. For example, there is a clear line evident in psychodynamic literature beginning with the writings of Freud, to the famous studies by Henry Murray and Gordon Allport, down to the normative conceptualization of Erickson (1950), The Eight Crises of Life, and the influential works of Robert White, Lives in Progress (1952). All in all, the most recent popular studies, such as by Vaillant, Gould, and Levinson, have continued this tradition.
