“…Research has indicated that good health, functional ability, a sense of personal adequacy or usefulness, social participation, social networks, especially the existence of friends, social support and level of income have often been reported to be signi cantly associated with both psychological well-being and quality of life in older age (Maddox, 1963;Lowenthal & Haven, 1968;Markides & Martin, 1979;Kushman & Lane, 1980;Usui et al, 1985;Vailant, 1990;Bowling et al, 1996;Bowling & Windsor, 2001). Subjective self-ratings of well-being, and health have been reported to be more powerful than objective economic or socio-demographic indicators in explaining the variance in quality of life ratings (Markides & Martin, 1979;Kushman & Lane, 1980;Usui et al, 1985;Bowling et al, 1996;Bowling & Windsor, 2001).…”