Persistence of social signatures in human communication

Saramäki, Jari, Leicht, Elizabeth, López, Eduardo, Roberts, Sam G. B., Reed-Tsochas, Felix and Dunbar, Robin I. M. (2014) Persistence of social signatures in human communication. Proceedings of the National Academy of Sciences, 111 (3). pp. 942-947.

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The social network maintained by a focal individual, or ego, is intrinsically dynamic and typically exhibits some turnover in membership over time as personal circumstances change. However, the consequences of such changes on the distribution of an ego’s network ties are not well understood. Here we use a unique 18-mo dataset that combines mobile phone calls and survey data to track changes in the ego networks and communication patterns of students making the transition from school to university or work. Our analysis reveals that individuals display a distinctive and robust social signature, captured by how interactions are distributed across different alters. Notably, for a given ego, these social signatures tend to persist over time, despite considerable turnover in the identity of alters in the ego network. Thus, as new network members are added, some old network members either are replaced or receive fewer calls, preserving the overall distribution of calls across network members. This is likely to reflect the consequences of finite resources such as the time available for communication, the cognitive and emotional effort required to sustain close relationships, and the ability to make emotional investments.

Item Type: Article
Keywords: quantitative sociology; personal relationships; complexity; social networks
Subject(s): Complexity
Centre: CABDyN Complexity Centre
Date Deposited: 10 Apr 2014 15:25
Last Modified: 07 Nov 2018 15:50
Funders: European Commission (FP7 & ERC), Rockefeller Foundation, Oxford Martin School, EPSRC, ESRC, Academy of Finland

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