Social network size in humans
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This paper examines social network size in contemporary Western society based on the exchange of Christmas cards. Maximum network size averaged 153.5 individuals, with a mean network size of 124.9 for those individuals explicitly contacted; these values are remarkably close to the group size of 150 predicted for humans on the basis of the size of their neocortex. Age, household type, and the relationship to the individual influence network structure, although the proportion of kin remained relatively constant at around 21%. Frequency of contact between network members was primarily determined by two classes of variable: passive factors (distance, work colleague, overseas) and active factors (emotional closeness, genetic relatedness). Controlling for the influence of passive factors on contact rates allowed the hierarchical structure of human social groups to be delimited. These findings suggest that there may be cognitive constraints on network size.
- Barrett, L., R. I. M. Dunbar, and J. E. Lycett 2002 Human Evolutionary Psychology. Basingstoke: Palgrave/Macmillan, and Princeton: Princeton University Press.
- Barton, R. A., and R. I. M. Dunbar 1997 Evolution of the Social Brain. In Machiavellian Intelligence II, A. Whiten and R. Byrne, eds. Pp. 240–263. Cambridge: Cambridge University Press.
- Belle, D. E. 1982 The Impact of Poverty on Social Networks and Supports. Marriage and Family Review 5:89–103. CrossRef
- Buys, C. J., and K. L. Larson 1979 Human Sympathy Groups. Psychology Reports 45:547–553.
- Dickens, W. J., and D. Perlman 1981 Friendship over the Life Cycle. In Personal Relationships 2: Developing Personal Relationships, S. Duck, and R. Gilmour, eds. Pp. 91–122. London: Academic Press.
- Dunbar, R. I. M. 1991 Functional Significance of Social Grooming in Primates. Folia Primatologica 57:121–131. CrossRef
- 1992 Neocortex Size as a Constraint on Group Size in Primates. Journal of Human Evolution 22:469–493. CrossRef
- 1993 Coevolution of Neocortical Size, Group Size and Language in Humans. Behavioural and Brain Sciences 16:681–735. CrossRef
- 1998 The Social Brain Hypothesis. Evolutionary Anthropology 6:178–190. CrossRef
- Dunbar, R. I. M., and J. Bever 1998 Neocortex Size Predicts Group Size in Some Insectivores. Ethology 104: 695–708. CrossRef
- Dunbar, R. I. M., and M. Spoors 1995 Social Networks, Support Cliques, and Kinship. Human Nature 6:273–290.
- Hames, R. D. 1979 Relatedness and Interaction among the Ye’kwana: A Preliminary Analysis. In Evolutionary Biology and Human Social Behavior, N. A. Chagnon and W. Irons, eds. Pp. 238–249. North Scituate: Duxbury Press.
- Hays, R. B., and D. Oxley 1986 Social Network Development and Functioning during a Lifetime Transition. Journal of Personality and Social Psychology 50:305–313. CrossRef
- Hughes, A. 1988 Evolution and Human Kinship. Oxford: Oxford University Press.
- Johnson, E., H. R. Bernard, P. D. Killworth, G. A. Shelley, and C. McCarty 1995 A Social Network Approach to Cooroborating the Number of AIDS/HIV + Victims in the U.S. Social Networks 17:169–187.
- Keesing, R. M. 1975 Kin Groups and Social Structure. New York: Holt, Rinehart, Winston.
- Killworth, P. D., H. R. Bernard, and C. McCarty 1984 Measuring Patterns of Acquaintanceship. Current Anthropology 25:391–397. CrossRef
- Killworth, P. D., E. Johnson, H. R. Bernard, G. A. Shelley, and C. McCarty 1990 Estimating the Size of Personal Networks. Social Networks 12:289–312. CrossRef
- Killworth, P. D., C. McCarty, H. R. Bernard, G. A. Shelley, and E. C. Johnson 1998 Estimation of Seroprevalence, Rape and Homelessness in the United States Using a Social Network Approach. Evaluation Review 22:289–308. CrossRef
- Kim, H. K., and P. C. McKenry 1998 Social Networks and Support: A Ccomparison of African Americans, Asian Americans, Caucasians, and Hispanics. Journal of Comparative Family Studies 29:313–334.
- Kudo, H., and R. I. M. Dunbar 2001 Neocortex Size and Social Network Size in Humans. Animal Behaviour 62:711–722. CrossRef
- McCannell, K. 1988 Social Networks and the Transition to Motherhood. In Families and Social Networks, R. M. Milardo, ed. Pp. 83–106. Newbury Park: Sage.
- McCarty, C., H. R. Bernard, P. D. Killworth, G. A. Shelley, and E. C. Johnson 1997 Eliciting Representative Samples of Personal Networks. Social Networks 19:303–323. CrossRef
- McCarty, C., P. D. Killworth, H. R. Bernard, E. C. Johnson, and G. A. Shelley 2001 Comparing Two Methods for Estimating Network Size. Human Organization 60:28–39.
- Marino, L. 1996 What Dolphins Can Tell Us about Primate Evolution. Evolutionary Anthropology 5:81–86. CrossRef
- Marsden, P. V. 1987 Core Discussion Networks of Americans. American Sociological Review 52:122–131. CrossRef
- Milardo, R. M. 1988 Families and Social Networks: An Overview of Theory and Methodology. In Families and Social Networks, R. M. Milardo, ed. Pp. 13–47. Newbury Park: Sage.
- Milardo, R. M., ed. 1988 Families and Social Networks. Newbury Park: Sage.
- Pool, I. S., and M. Kochen 1978 Contacts and Influence. Social Networks 1:5–51. CrossRef
- Rands, M. 1988 Changes in Social Networks Following Marital Separation and Divorce. In Families and Social Networks, R. M. Milardo, ed. Pp. 127–146. Newbury Park: Sage.
- Reis, H., L. Wheeler, N. Spiegel, M. Kernis, J. Nezlek, and M. Perri 1982 Physical Attractiveness and Social Interaction II: Why Does Appearance Affect Social Experience? Journal of Personality and Social Psychology 43:979–996. CrossRef
- Ruan, D., L. C. Freeman, X. Dai, Y. Pan, and W. Zhang 1997 On the Changing Structure of Social Networks in Urban China. Social Networks 19:75–89. CrossRef
- Sugawara, K. 1984 Spatial Proximity and Bodily Contact among the Central Kalahari San. African Study Monograph (Supplement) 3:1–43.
- Tschudin, A. 1997 Relative Neocortex Size and Its Correlates in Dolphins: Comparisons with Humans and Implications for Mental Evolution. Ph.D. Thesis, University of Natal.
- Wilson, R. 1995 An Investigation into the Effects of Individual Differences upon the Size and Composition of Individuals Social Networks. B.Sc. Dissertation, University of Liverpool.
- Social network size in humans
Volume 14, Issue 1 , pp 53-72
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- Frequency of contact
- Group size
- Neocortex size
- Social networks