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Journal Article Successful Aging Get access Robert J. Havighurst Robert J. Havighurst Search for other works by this author on: Oxford Academic PubMed Google Scholar The Gerontologist, Volume 1, Issue 1, March 1961, Pages 8–13, https://doi.org/10.1093/geront/1.1.8 Published: 01 March 1961
Robert J. Havighurst (Wed,) studied this question.