“…Two main sources of assistance with personal care can be distinguished: Informal support includes help provided by relatives, friends, or neighbors, a diffuse primary group characterized by its small size, affectivity, and durable commitment to each other's well-being (Dono, Falbe, Kail, Litwak, Sherman, & Siegel, 1979). Formal support is delivered by persons from outside the primary group, such as home-health agencies, assisted living facilities, or nursing homes, It is estimated that in industrial countries, such as the United States or Germany, approximately 80 percent to 85 percent of help and care services to the elderly is provided by informal helpers (Schneekloth & Potthoff, 1994;Stone, Cafferata, & Sangl, 1987).…”