References
- Allison, P. (2002). Fixed effect regression model. California: Sage Publications.
- Antonucci, T., & Akiyama, H. (1987). An examination of sex differences in social support among older men and women. Sex Roles, 17(11), 737-749. https://doi.org/10.1007/BF00287685
- Baron, R., & Kenny, D. (1986). The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. Journal of Personality and Social Psychology, 51(6), 1173-1182. https://doi.org/10.1037/0022-3514.51.6.1173
- Bennett, K. (1998). Longitudinal changes in mental and physical health among elderly, recently widowed men. Mortality, 3(3), 265-273. https://doi.org/10.1080/713685953
- Bennett, K. (2005). Psychological wellbeing in later life: The longitudinal effects of marriage, widowhood and marital status change. International Journal of Geriatric Psychiatry, 20(3), 280-284. https://doi.org/10.1002/gps.1280
- Berkman, L., Berkman, C., Kasl, S., Freeman, D., Leo, L., Ostfeld, A., & Brody, J. (1986). Depressive symptoms in relation to physical health and functioning in the elderly. American Journal of Epidemiology, 124(3), 372-388.
- Berkman, L., & Glass, T. (2000). Social integration, social networks, social support, and health. Social Epidemiology, 1, 137-173.
- Byeon, Y. (2006). The Level of depression and participation in leisure activities in the elderly according to gender. Journal of Korean Gerontological Nursing, 8(2), 128-135.
- Carstensen, L., Isaacowitz, D., & Charles, S. (1999). Taking time seriously: A theory of socioemotional selectivity. American Psychologist, 54(3), 165-181. https://doi.org/10.1037/0003-066X.54.3.165
- Cha, S. (2007). Marital status of elderly: Does it really matter for health?. Journal of the Korean Gerontological Society, 27(2), 371-392.
- Cheng, S., & Chan, A. (2006). Relationship with others and life satisfaction in later life: Do gender and widowhood make a difference?. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 61(1), 46-53. https://doi.org/10.1093/geronb/61.1.P46
- Cohen, S., & Syme, S. (1985). Issues in the study and application of social support. In S. Cohen & S. L. Syme (Eds.), Social support and health (pp.3-22). San Francisco: Academic Press.
- de Vries, B., Utz, R., Caserta, M., & Lund, D. (2014). Friend and family contact and support in early widowhood. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 69(1), 75-84. https://doi.org/10.1093/geronb/gbu037
- Donnelly, E., & Hinterlong, J. (2010). Changes in social participation and volunteer activity among recently widowed older adults. The Gerontologist, 50(2), 158-169. https://doi.org/10.1093/geront/gnp103
- Ferraro, K., & Farmer, M. (1995). Social compensation in adulthood and later life. In A. D. Roger, & L, Backman (Eds.), Compensating for psychological deficits and declines: Managing losses and promoting gain (pp. 127-145). Hillsdale, NJ: Lawrence Erlbaum Associates.
- Flaherty, J., & Richman, J. (1989). Gender differences in the perception and utilization of social support: Theoretical perspectives and an empirical test. Social Science and Medicine, 28(12), 1221-1228. https://doi.org/10.1016/0277-9536(89)90340-7
- Gabriel, S., & Gardner, W. (1999). Are there" his" and " hers" types of interdependence? The implications of gender differences in collective versus relational interdependence for affect, behavior, and cognition. Journal of Personality and Social Psychology, 77(3), 642-655. https://doi.org/10.1037/0022-3514.77.3.642
- Ha, J. (2008). Changes in support from confidants, children, and friends following widowhood. Journal of Marriage and Family, 70(2), 306-318. https://doi.org/10.1111/j.1741-3737.2008.00483.x
- Ha, J., & Ingersoll-Dayton, B. (2011). Moderators in the relationship between social contact and psychological distress among widowed adults. Aging and Mental Health, 15(3), 354-363. https://doi.org/10.1080/13607863.2010.519325
- Hayes, A. (2008). Introduction to mediation, moderation, and conditional process analysis: A regression-based approach. New York: Guilford Press.
- Hong, S., Hasche, L., & Bowland, S. (2009). Structural relationships between social activities and longitudinal trajectories of depression among older adults. The Gerontologist, 49(1), 1-11. https://doi.org/10.1093/geront/gnp006
- Isherwood, L., King, D., & Luszcz, M. (2012). A longitudinal analysis of social engagement in late-life widowhood. The International Journal of Aging and Human Development, 74(3), 211-229. https://doi.org/10.2190/AG.74.3.c
- Janke, M., Nimrod, G., & Kleiber, D. (2008). Leisure activity and depressive symptoms of widowed and married women in later life. Journal of Leisure Research, 40(2), 250-266.
- Jeon, G., Jang, S., Kim, D., & Cho, S. (2013). Widowhood and depressive symptoms among korean elders: The role of social ties. Journals of Gerontology, Series B: Psychological Sciences and Social Sciences, 68(6), 963-973. https://doi.org/10.1093/geronb/gbt084
- Kawachi, I., & Berkman, L. (2000). Social cohesion, social capital, and health In l. F. Berkman & I. Kawachi (Eds.), Social epidemiology (pp. 174-190). New York: Oxford University Press.
- Kawachi, I., & Berkman, L. (2001). Social ties and mental health. Journal of Urban Health, 78(3), 458-467. https://doi.org/10.1093/jurban/78.3.458
- Kim, H. (2000). Modernity and Women's Labor Rights in South Korea. Korea Journal of Women's Studies, 16(1), 37-64.
- Kim, Y. (2004). Gender relations and psychological well-being among the elderly. Korea Journal of Population Studies, 27(1), 1-30.
- Lee, G. R., DeMaris, A., Bavin, S., & Sullivan, R. (2001). Gender differences in the depressive effect of widowhood in later life. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 56(1), 56-61. https://doi.org/10.1093/geronb/56.1.S56
- Lee, J., & Han, G. (2012). Korean Pre-elders' friendship experience and happiness. Health and Social Welfare Review, 32(2), 170-205. https://doi.org/10.15709/hswr.2012.32.2.170
- Lee, M. (2010). Marital status and depressive symptoms among Korean older adults: Their associations and gender differences. Korean Journal of Sociology, 44(4), 32-62.
- Lee, M. (2012). Marital relationships and depressive symptoms among elderly population: The effects of marital status and marital satisfaction. Korean Journal of Sociology, 46(4), 176-204.
- Lee, M. (2014). A longitudinal data analysis on depressive symptoms of Korean older adults: Examining the differential effects of spousal loss and marital satisfaction across men and women. Korea Journal of Population Studies, 37(1), 109-130.
- Lee, S. (2010). The Effects of Age, Economic State, Physical Satisfaction on Life Satisfaction of Widowed and Married Elderly Women. Journal of Korean Home Management Association, 27(6), 2215-227.
- Li, L., Liang, J., Toler, A., & Gu, S. (2005). Widowhood and depressive symptoms among older Chinese: Do gender and source of support make a difference? Social Science and Medicine, 60(3), 637-647. https://doi.org/10.1016/j.socscimed.2004.06.014
- Li, Y., & Ferraro, K. (2005). Volunteering and depression in later life: Social benefit or selection processes? Journal of Health and Social Behavior, 46(1), 68-84. https://doi.org/10.1177/002214650504600106
- Li, Y. (2007). Recovering from spousal bereavement in later life: Does volunteer participation play a role?. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 62(4), 257-266. https://doi.org/10.1093/geronb/62.4.S257
- Litwak, E. (1985). Helping the elderly: The complementary roles of informal and formal systems. New York: Guilford.
- Luscher, K., & Pillemer, K. (1998). Intergenerational ambivalence: A new approach to the study of parent-child relations in later life. Journal of Marriage and the Family, 60(2), 413-425. https://doi.org/10.2307/353858
- Maes, M. (1999). Major depression and activation of the inflammatory response system. In R. Dantzer, E. E. Wollmann, & R. Yirmiya(Eds.), Cytokines, stress, and depression (pp. 25-46). New York: Springer US.
- Marks, N., & Lambert, J. (1998). Marital status continuity and change among young and midlife adults longitudinal effects on psychological well-being. Journal of Family Issues, 19(6), 652-686. https://doi.org/10.1177/019251398019006001
- Nolen-Hoeksema, S., Parker, L. E., & Larson, J. (1994). Ruminative coping with depressed mood following loss. Journal of Personality and Social Psychology, 67(1), 92-104. https://doi.org/10.1037/0022-3514.67.1.92
- Nolen-Hoeksema, S. (2001). Gender differences in depression. Current Directions in Psychological Science, 10(5), 173-176. https://doi.org/10.1111/1467-8721.00142
- Powers, S., Bisconti, T., & Bergeman, C. (2014). Trajectories of social support and well-being across the first two years of widowhood. Death Studies, 38(8), 499-509. https://doi.org/10.1080/07481187.2013.846436
- Radloff, L. (1977). The CES-D scale a self-report depression scale for research in the general population. Applied Psychological Measurement, 1(3), 385-401. https://doi.org/10.1177/014662167700100306
- Schulz, R., Beach, S., Ives, D., Martire, L., Ariyo, A., & Kop, W. (2000). Association between depression and mortality in older adults: The Cardiovascular Health Study. Archives of Internal Medicine, 160(12), 1761-1768. https://doi.org/10.1001/archinte.160.12.1761
- Schuster, T. Kessler, R., & Aseltine R., Jr. (1990). Supportive interactions, negative interactions, and depressed mood. American Journal of Community Psychology, 18(3), 423-438. https://doi.org/10.1007/BF00938116
- Seeman, T. (1996). Social ties and health: The benefits of social integration. Annals of Epidemiology, 6(5), 442-451. https://doi.org/10.1016/S1047-2797(96)00095-6
- Son, J., & Han, G. (2012). The effects of marital status on health among older women: The moderating effects of age and parent-adult child relationships. Korea Journal of Population Studies, 35(1), 211-238.
- Song, J., & Marks, N. (2007). The effects of marital status and retirement status on mental health among older adults: A longitudinal U.S. national study. Korea Journal of Population Studies, 30(1): 25-47.
- Stroebe, M., & Stroebe, W. (1983). Who suffers more? Sex differences in health risks of the widowed. Psychological Bulletin, 93(2), 279-301. https://doi.org/10.1037/0033-2909.93.2.279
- Stroebe, W., & Stroebe, M. (1987). Bereavement and health: The psychological and physical consequences of partner loss. Cambridge, United Kingdom: Cambridge University Press.
- Thoits, P. (1995). Stress, coping, and social support processes: Where are we? What next? Journal of Health and Social Behavior, 53-79.
- Tsuno, N., Besset, A., & Ritchie, K. (2005). Sleep and depression. Journal of Clinical Psychiatry, 66(10), 1254-1269. https://doi.org/10.4088/JCP.v66n1008
- Umberson, D., Wortman, C., & Kessler, R. (1992). Widowhood and depression: Explaining long-term gender differences in vulnerability. Journal of Health and Social Behavior, 33(1), 10-24. https://doi.org/10.2307/2136854
- Utz, R., Carr, D., Nesse, R., & Wortman, C. (2002). The effect of widowhood on older adults' social participation: An evaluation of activity, disengagement, and continuity theories. Gerontologist, 42(4), 522-533. https://doi.org/10.1093/geront/42.4.522
- van Grootheest, D., Beekman, A., van Groenou, M., & Deeg, D. (1999). Sex differences in depression after widowhood: Do men suffer more? Social Psychiatry and Psychiatric Epidemiology, 34(7), 391-398. https://doi.org/10.1007/s001270050160
- Van Baarsen, B. (2002). Theories on coping with loss the impact of social support and self-esteem on adjustment to emotional and social loneliness following a partner's death in later life. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 57(1), 33-42. https://doi.org/10.1093/geronb/57.1.S33