Abstract
Abstract This article uses data on ‘network instability’ to show how differences across multiple measurements on the membership of personal networks can yield important insights into the nature of these networks. The data come from a sample of 234 recent widows, aged 59–85, who completed seven interviews about their networks over a 1-year period. We use these data to investigate the stability of both overall networks and individual ties, as well as the linkage between the stability of individual ties and the stability of the network's aggregate properties. We find that instability in these networks is best thought of in terms of an underlying ‘core-periphery’ structure, whereby some network members are likely to be named repeatedly (the core), while others are relatively unlikely to appear in any given elicitation of the network (the periphery). We explore the implications of this core-periphery structure for cross-sectional elicitations of personal networks.
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