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	Social Isolation Index	Lubben Social Network Scale
Ämnesområde	Social Gerontology	Social Gerontology
Familj	Process / pipeline	Latent structure
Ursprungsår	2009	1988
Upphovsperson	Erin York Cornwell & Linda J. Waite	James E. Lubben
Typ	Composite index pipeline distinguishing structural and perceived social isolation	Self-report scale of social network size and engagement in older adults
Ursprungskälla	Cornwell, E. Y., & Waite, L. J. (2009). Social disconnectedness, perceived isolation, and health among older adults. Journal of Health and Social Behavior, 50(1), 31-48.	Lubben, J. E. (1988). Assessing social networks among elderly populations. Family & Community Health, 11(3), 42-52.
Alias	Social Disconnectedness and Perceived Isolation Index, Cornwell-Waite Isolation Index, Structural and Perceived Isolation Scales, Composite Social Isolation Measure	LSNS, LSNS-6, Lubben Scale, Social Network Scale for Older Adults
Närliggande	3	3
Sammanfattning	The Social Isolation Index, in the form developed by Erin York Cornwell and Linda Waite in 2009, is a survey-based measurement pipeline that separates the objective and subjective sides of social isolation among older adults. Cornwell and Waite argued that being structurally cut off from social contact, which they called social disconnectedness, is conceptually distinct from feeling isolated or unsupported, which they called perceived isolation, and that the two should be measured separately rather than merged. The disconnectedness scale combines indicators such as small social network size, infrequent contact and social participation, and few social ties, while the perceived-isolation scale combines feelings of loneliness, a perceived lack of support, and a sense of being isolated. Each set of indicators is standardized and summed into its own scale, and the two scales are then entered jointly into models of health outcomes. Their analysis showed that disconnectedness and perceived isolation are correlated but have partly distinct associations with physical and mental health. The approach has become a template for studying social isolation as a multidimensional construct in ageing research.	The Lubben Social Network Scale (LSNS) is a brief self-report instrument that gauges an older adult's level of social engagement by measuring the size of, and contact with, their family and friendship networks. Developed by James Lubben in 1988, it was designed to overcome the lack of a short, gerontology-specific tool for detecting social isolation, a condition tied to morbidity and mortality in later life. The original ten-item scale equally weights items covering network size, frequency of contact, and the presence of confiding relationships, summing them into a single index. A widely used six-item revision, the LSNS-6, retains three family and three friend items and supplies an empirically derived cutoff (a score below twelve) that flags people at risk of isolation. Because it relies only on self-reported counts rather than performance tests or clinical observation, the scale is feasible in surveys, primary care, and community screening. It has been translated into many languages and validated across diverse older populations, making it one of the most widely adopted social-isolation screens in gerontology.