The core of the research reported in this study was a survey of men and women 55 years and older sampled from a comprehensive list of residents. The authors asked questions about social networks, control over household assets, household composition, life satisfaction, and subjective health, among other things. The social network questions had been used in an earlier study done in Kentucky. Nearly everything else had been developed for the Delhi study. The findings were similar to those in the earlier study: the size of people's networks does not decline materially until they are older (80...