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Journal Article Psychological Variations Across the Adult Life Course: Frontiers for Research and Policy Get access Marjorie Fiske Marjorie Fiske 2Univ. of CaliforniaSan Francisco, 1415-29 Fourth Ave. , San Francisco 94143 Search for other works by this author on: Oxford Academic PubMed Google Scholar The Gerontologist, Volume 15, Issue 1Part₁, February 1975, Pages 6–12, https: //doi. org/10. 1093/geront/15. 1Part₁. 6 Published: 01 February 1975
Marjorie Fiske (Sat,) studied this question.