1. (2023, April 27). Statistical Analyses of Longevity, Available online: https://www.mhlw.go.jp/toukei/saikin/hw/life/life21/dl/life21-02.pdf.
2. (2023, April 27). Kaigoyobou Nichijyouseikatushien No Kihontekina Kanngaekata. [Basic Guideline for Comprehensive Daily Life Support Project], Available online: https://www.mhlw.go.jp/file/06-Seisakujouhou-12300000-Roukenkyoku/0000192996.pdf.
3. Erikson, E.H. (1950). Childhood and Society, W.W. Norton & Co.
4. A theory of generativity and its assessment through self-report, behavioral acts, and narrative themes in autobiography;McAdams;J. Pers. Soc. Psychol.,1992
5. Generativity among young, midlife, and older adults;McAdams;Psychol. Aging,1993