This paper focuses on relational exclusion (i.e. isolation and non-participation in social activities) in very old age. Based on a five-year study of an octogenarian cohort, the authors investigate the impact of three critical life events (deterioration of health, death of a close relative, entry into a nursing home) on relational life and social involvement. With advancing age, older people withdraw from some social activities, but their relationships with their family and friends remain stable. Life events have a stimulative effect on the support network (especially of family), and only the deterioration of health curbs social activity. This would seem to confirm the existence of a process of disengagement stemming more from the older people's functional or sensory disabilities than from an individual choice

The aim of this paper is to investigate the interface between the formal and informal support provided to very old people against a background of increasing need for care and a decreasing number of potential informal caregivers. We used a sample of 323 community-dwelling octogenarians participating in the Swiss Interdisciplinary Longitudinal Study on the Oldest Old (SWILSOO) ({n} = 1441 interviews). Descriptive analyses and a multilevel model were used to test whether formal and informal services complemented or substituted one another. The study revealed that the amount of informal services increased significantly as the frequency of formal aid increased, indicating that the two networks were complementary in the majority of the cases. In 21.2% of the cases, the formal network partly substituted the informal network (as an adjustment) and only in 6.4% of the cases did the informal support end after the formal support had increased (radical substitution). The concern that the introduction of formal services may curb the readiness of relatives and friends to provide care is thus unfounded