A study of older adults in Israel (n = 170) examined the relationship of ac
tivity level and social network characteristics to respondents' subjective
well-being, controlling for background socio-demographic characteristics an
d extent of physical disability. Factor analysis derived three activity fac
tors corresponding to formal, informal and solitary activity. A hierarchica
l regression procedure revealed that physical disability accounted for 40 p
er cent of the variance in the well-being measure. Extent of informal activ
ity explained another 3 per cent of the variance, but was outweighed in the
final model by the addition of a social network factor degree of network s
upportiveness (R-2 = .48). The findings suggest that it is the social netwo
rk aspect of activity that makes a difference in older persons' subjective
well-being, rather than the effect of activity per se.