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Social Networks journal homepage: www.elsevier.com/locate/socnet
Tastes, ties, and time: A new social network dataset using Facebook.com
Kevin Lewis a,∗ , Jason Kaufman a , Marco Gonzalez a , Andreas Wimmer b , Nicholas Christakis a a b
Department of Sociology, Harvard University, United States Department of Sociology, University of California, Los Angeles, United States
a r t i c l e
Keywords: Internet Network data Facebook Culture Race/ethnicity Higher education Tastes
i n f o
a b s t r a c t
Scholars have long recognized the potential of Internet-based communication technologies for improving network research—potential that, to date, remains largely underexploited. In the first half of this paper, we introduce a new public dataset based on manipulations and embellishments of a popular social network site, Facebook.com. We emphasize five distinctive features of this dataset and highlight its advantages and limitations vis-à-vis other kinds of network data. In the second half of this paper, we present descriptive findings from our first wave of data. Subgroups defined by gender, race/ethnicity, and socioeconomic status are characterized by distinct network behaviors, and students sharing social relationships as well as demographic traits tend to share a significant number of cultural preferences. These findings exemplify the scientific and pedagogical potential of this new network resource and provide a starting point for future analyses. © 2008 Elsevier B.V. All rights reserved.
1. Introduction In recent decades, the “science of networks” (Watts, 2007) has developed into a thriving field of social scientific inquiry (see also Rogers, 1987; Emirbayer and Goodwin, 1994; Watts, 2004). Specialty journals (e.g. Social Networks) and conferences (e.g. the International Sunbelt Social Network Conference) have contributed to the rapid development of network theory and methods.
References: Adamic, L.A., Adar, E., 2003. Friends and neighbors on the Web. Social Networks 25, 211–230. Agneessens, F., Waege, H., Lievens, J., 2006. Diversity in social support by role relations: a typology. Social Networks 28, 427–441. Agresti, A., Agresti, B.F., 1977. Statistical analysis of qualitative variation. In: Schuessler, K.F. (Ed.), Sociological Methodology 1978. Jossey-Bass, San Francisco, pp. 204–237. Antonio, A.L., 2001. Diversity and the influence of friendship groups in college. The Review of Higher Education 25, 63–89. Bearman, P.S., Moody, J., 2004. Suicide and friendships among American adolescents. American Journal of Public Health 94, 89–95. Bernard, H.R., Killworth, P., Kronenfeld, D., Sailer, L., 1984. The problem of informant accuracy: the validity of retrospective data. Annual Review of Anthropology 13, 495–517. Berry, B., 2006. Friends for better or for worse: interracial friendship in the United States as seen through wedding party photos. Demography 43, 491–510. Borgatti, S.P., Everett, M.G., Freeman, L.C., 2002. Ucinet 6 for Windows: Software for Social Network Analysis. Analytic Technologies, Harvard, MA. Bourdieu, P., 1984. Distinction: A Social Critique of the Judgment of Taste. Harvard University Press, Cambridge, MA. boyd, d.m., Ellison, N.B., 2007. Social network sites: definition, history, and scholarship. Journal of Computer-Mediated Communication 13 (article 11). Published in digital form at http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html. Brewer, D.D., 2000. Forgetting in the recall-based elicitation of personal and social networks. Social Networks 22, 29–43. Brewer, D.D., Webster, C.M., 1999. Forgetting of friends and its effects on measuring friendship networks. Social Networks 21, 361–373. Brown, B.B., 1990. Peer groups and peer cultures. In: Feldman, S.S., Elliott, G.R. (Eds.), At the Threshold: The Developing Adolescent. Harvard University Press, Cambridge, MA, pp. 171–196. Bryson, B., 1996. “Anything but heavy metal”: symbolic exclusion and musical dislikes. American Sociological Review 61, 884–899. Burt, R.S., 1983. Range. In: Burt, R.S., Minor, M.J. (Eds.), Applied Network Analysis: A Methodological Introduction. Sage, Beverly Hills, CA, pp. 176–194. Burt, R.S., 1992. Structural Holes: The Social Structure of Competition. Harvard University Press, Cambridge, MA. Burt, R.S., 2000. Decay functions. Social Networks 22, 1–28. Butts, C.T., 2003. Network inference, error, and informant (in)accuracy: a Bayesian approach. Social Networks 25, 103–140. Campbell, K.E., Marsden, P.V., Hurlbert, J.S., 1986. Social resources and socioeconomic status. Social Networks 8, 97–117. Carter, P.L., 2003. “Black” cultural capital, status positioning, and schooling conflicts for low-income African American youth. Social Problems 50, 136–155. Christakis, N.A., Fowler, J.H., 2007. The spread of obesity in a large social network over 32 years. New England Journal of Medicine 357, 370–379. Christakis, N.A., Fowler, J.H., 2008. The collective dynamics of smoking in a large social network. New England Journal of Medicine 358, 2249–2258. Cohen, S., Doyle, W.J., Skoner, D.P., Rabin, B.S., Gwaltney, J.M., 1997. Social ties and susceptibility to the common cold. Journal of the American Medical Association 277, 1940–1944. Coleman, J.S., 1988. Social capital in the creation of human capital. American Journal of Sociology 94, S95–S120. Dekker, D., Krackhardt, D., Snijders, T.A.B., 2007. Sensitivity of MRQAP tests to collinearity and autocorrelation conditions. Psychometrika 72, 563–581. DiMaggio, P., Hargittai, E., Neuman, W.R., Robinson, J.P., 2001. Social implications of the Internet. Annual Review of Sociology 27, 307–336. DiMaggio, P., Mohr, J., 1985. Cultural capital, educational attainment, and marital selection. American Journal of Sociology 90, 1231–1261. Ellison, N.B., Steinfield, C., Lampe, C., 2007. The benefits of Facebook “friends:” social capital and college students’ use of online social network sites. Journal of Computer-Mediated Communication 12 (article 1). Published in digital form at http://jcmc.indiana.edu/vol12/issue4/ellison.html. Emerson, M.O., Kimbro, R.T., Yancey, G., 2002. Contact theory extended: the effects of prior racial contact on current social ties. Social Science Quarterly 83, 745–761. Emirbayer, M., Goodwin, J., 1994. Network analysis, culture, and the problem of agency. American Journal of Sociology 99, 1411–1454. Ennett, S.T., Bauman, K.E., Hussong, A., Faris, R., Foshee, V.A., et al., 2006. The peer context of adolescent substance use: findings from social network analysis. Journal of Research on Adolescence 16, 159–186. Erickson, B.H., 1996. Culture, class, and connections. American Journal of Sociology 102, 217–251. Everett, M., Borgatti, S.P., 2005. Ego network betweenness. Social Networks 27, 31–38. Facebook, 2008. Statistics. Facebook, Palo Alto, CA. http://www.facebook.com/ press/info.php?statistics (accessed 27.06.08). Feld, S.L., Carter, W.C., 2002. Detecting measurement bias in respondent reports of personal networks. Social Networks 24, 365–383. Fischer, C.S., 1982a. To Dwell Among Friends: Personal Networks in Town and City. University of Chicago Press, Chicago. Fischer, C.S., 1982b. What do we mean by “friend”? An inductive study. Social Networks 3, 287–306. Freeman, L.C., 1979. Centrality in social networks: conceptual clarification. Social Networks 1, 215–239. Freeman, L.C., Roeder, D., Mulholland, R.R., 1980. Centrality in social networks: experimental results. Social Networks 2, 119–141. Garton, L., Haythornthwaite, C., Wellman, B., 1997. Studying online social networks. Journal of Computer-Mediated Communication 3. Published in digital form at http://jcmc.indiana.edu/vol3/issue1/garton.html. Golder, S.A., Wilkinson, D., Huberman, B.A., 2007. Rhythms of social interaction: messaging within a massive online network. In: Steinfield, C., Pentland, B., Ack- 342 K. Lewis et al. / Social Networks 30 (2008) 330–342 Lizardo, O., 2006. How cultural tastes shape personal networks. American Sociological Review 71, 778–807. Mark, N., 1998. Birds of a feather sing together. Social Forces 77, 453–485. Mark, N., 2003. Culture and competition: homophily and distancing explanations for cultural niches. American Sociological Review 68, 319–345. Marmaros, D., Sacerdote, B., 2006. How do friendships form? The Quarterly Journal of Economics 121, 79–119. Marsden, P.V., 1987. Core discussion networks of Americans. American Sociological Review 52, 122–131. Marsden, P.V., 1990. Network data and measurement. Annual Review of Sociology 16, 435–463. Marsden, P.V., 2003. Interviewer effects in measuring network size using a single name generator. Social Networks 25, 1–16. Marsden, P.V., 2005. Recent developments in network measurement. In: Carrington, P.J., Scott, J., Wasserman, S. (Eds.), Models and Methods in Social Network Analysis. Cambridge University Press, Cambridge, pp. 8–30. Martin, J.L., Yeung, K., 2006. Persistence of close personal ties over a 12-year period. Social Networks 28, 331–362. Mayer, A., Puller, S.L., 2008. The old boy (and girl) network: social network formation on university campuses. Journal of Public Economics 92, 329–347. McClintock, C., Turner, H., 1962. The impact of college upon political knowledge, participation, and values. Human Relations 15, 163–176. McPherson, M., Smith-Lovin, L., Brashears, M.E., 2006. Social isolation in America: changes in core discussion networks over two decades. American Sociological Review 71, 353–375. McPherson, M., Smith-Lovin, L., Cook, J.M., 2001. Birds of a feather: homophily in social networks. Annual Review of Sociology 27, 415–444. Moore, G., 1990. Structural determinants of men’s and women’s personal networks. American Sociological Review 55, 726–735. Munch, A., McPherson, J.M., Smith-Lovin, L., 1997. Gender, children, and social contact: the effects of childrearing for men and women. American Sociological Review 62, 509–520. Paolillo, J.C., Wright, E., 2005. Social network analysis on the semantic web: techniques and challenges for visualizing FOAF. In: Geroimenko, V., Chen, C. (Eds.), Visualizing the Semantic Web. Springer, Berlin, pp. 229–242. Pescosolido, B.A., Levy, J.A., 2002. The role of social networks in health, illness, disease, and healing: the accepting present, the forgotten past, and the dangerous potential for a complacent future. In: Levy, J.A., Pescosolido, B.A. (Eds.), Social Networks and Health. JAI, Amsterdam, pp. 3–25. Phelan, T.J., Phelan, J.C., 1983. Higher education and early life outcomes. Higher Education 12, 665–680. Robins, G., Pattison, P., Woolcock, J., 2004. Missing data in networks: exponential random graph (p*) models for networks with non-respondents. Social Networks 26, 257–283. Rogers, E.M., 1987. Progress, problems and prospects for network research: investigating relationships in the age of electronic communication technologies. Social Networks 9, 285–310. Rozin, P., Riklis, J., Margolis, L., 2004. Mutual exposure or close peer relationships do not seem to foster increased similarity in food, music or television program preferences. Appetite 42, 41–48. Sacerdote, B., 2001. Peer effects with random assignment: results for Dartmouth roommates. The Quarterly Journal of Economics 116, 681–704. Simmel, G., 1955 [1922]. Wolff, K.H., Bendix, R. (Trans.), Conflict and the Web of Group Affiliations. Free Press, New York. Smith-Lovin, L., McPherson, M., 1993. You are who you know: a network perspective on gender. In: England, P. (Ed.), Theory on Gender/Feminism on Theory. Aldine de Gruvter, New York, pp. 224–251. Steglich, C., Snijders, T.A.B., West, P., 2006. Applying SIENA: an illustrative analysis of the coevolution of adolescents’ friendship networks, taste in music, and alcohol consumption. Methodology 2, 48–56. van Duijn, M.A.J., Zeggelink, E.P.H., Huisman, M., Stokman, F.N., Wasseur, F.W., 2003. Evolution of sociology freshmen into a friendship network. Journal of Mathematical Sociology 27, 153–191. van Eijck, K., 2001. Social differentiation in musical taste patterns. Social Forces 79, 1163–1185. Wasserman, S., Faust, K., 1994. Social Network Analysis: Methods and Applications. Cambridge University Press, Cambridge. Watts, D.J., 2004. The “new” science of networks. Annual Review of Sociology 30, 243–270. Watts, D.J., 2007. A twenty-first century science. Nature 445, 489. Wimmer, A., 2008. The making and unmaking of ethnic boundaries: a multi-level process theory. American Journal of Sociology 113, 970–1022. Wimmer, A., Lewis, K., submitted for publication. Beyond and below racial homophily: exponential random graph models of a college friendship network. Winship, C., Mandel, M., 1983. Roles and positions: a critique and extension of the blockmodeling approach. In: Leinhardt, S. (Ed.), Sociological Methodology 1983–1984. Jossey-Bass, San Francisco, pp. 314–344. erman, M., Contractor, N. (Eds.), Proceedings of Third International Conference on Communities and Technology. Springer, London, pp. 41–66. Gonzalez, M.J., 2007. Contingencies of connectedness: an analysis of the differential effect of closure and brokerage-based network structures on the educational achievement of Chinese and Mexican American immigrants. Qualifying Paper, Department of Sociology, Harvard University. Gould, R.V., 1987. Measures of betweenness in non-symmetric networks. Social Networks 9, 277–282. Granovetter, M.S., 1973. The strength of weak ties. American Journal of Sociology 78, 1360–1380. Granovetter, M.S., 1974. Getting a Job: A Study of Contacts and Careers. Harvard University Press, Cambridge, MA. Gross, R., Acquisti, A., 2005. Information revelation and privacy in online social networks. In: Proceedings of WPES’05. ACM, Alexandria, VA, pp. 71–80. Hanneman, R.A., Riddle, M., 2005. Introduction to Social Network Methods. University of California, Riverside. Published in digital form at http://faculty.ucr.edu/∼hanneman/. Hansell, S., Karweit, N.L., 1983. Curricular placement, friendship networks, and status attainment. In: Epstein, J.L., Karweit, N.L. (Eds.), Friends in School: Patterns of Selection and Influence in Secondary Schools. Academic Press, New York, pp. 141–162. Holland, P., Leinhardt, S., 1973. The structural implications of measurement error in sociometry. Journal of Mathematical Sociology 3, 85–111. Hughes, M., Peterson, R.A., 1983. Isolating cultural choice patterns in the U.S. population. American Behavioral Scientist 26, 459–478. IMDb, Inc., 2007. IMDb top 250. Internet Movie Database, Seattle, WA. http://www.imdb.com/chart/top (accessed 15.05.07). Kalmijn, M., 1998. Intermarriage and homogamy: causes, patterns and trends. Annual Review of Sociology 24, 395–421. Kandel, D.B., 1978. Homophily, selection, and socialization in adolescent friendships. American Journal of Sociology 84, 427–436. Kao, G., Joyner, K., 2004. Do race and ethnicity matter among friends? Activities among interracial, interethnic, and intraethnic adolescent friends. The Sociological Quarterly 45, 557–573. Katz-Gerro, T., 1999. Cultural consumption and social stratification: leisure activities, musical tastes, and social location. Sociological Perspectives 42, 627–646. Kaufman, J., 2004. Endogenous explanation in the sociology of culture. Annual Review of Sociology 30, 335–357. King, G., 2007. An introduction to the Dataverse Network as an infrastructure for data sharing. Sociological Methods and Research 36, 173–199. Knoke, D., Burt, R.S., 1983. Prominence. In: Burt, R.S., Minor, M.J. (Eds.), Applied Network Analysis: A Methodological Introduction. Sage, Beverly Hills, CA, pp. 195–222. Kossinets, G., Watts, D.J., 2006. Empirical analysis of an evolving social network. Science 311, 88–90. Krackhardt, D., 1987. QAP partialling as a test of spuriousness. Social Networks 9, 171–186. Krackhardt, D., 1988. Predicting with networks: nonparametric multiple regression analysis of dyadic data. Social Networks 10, 359–381. Lamont, M., Lareau, A., 1988. Cultural capital: allusions, gaps and glissandos in recent theoretical developments. Sociological Theory 6, 153–168. Lampe, C., Ellison, N., Steinfield, C., 2006. A Face(book) in the crowd: social searching vs. social browsing. In: Proceedings of CSCW-2006, ACM, New York, pp. 167–170. Lampe, C., Ellison, N., Steinfield, C., 2007. A familiar Face(book): profile elements as signals in an online social network. In: Proceedings of Conference on Human Factors in Computing Systems, ACM, New York, pp. 435–444. Laumann, E.O., Marsden, P.V., Prensky, D., 1983. The boundary specification problem in network analysis. In: Burt, R.S., Minor, M.J. (Eds.), Applied Network Analysis: A Methodological Introduction. Sage, Beverly Hills, CA, pp. 18–34. Leskovec, J., Horvitz, E., 2007. Worldwide buzz: planetary-scale views on an instantmessaging network. Microsoft Research Technical Report MSR-TR-2006-186, Microsoft Research. Levin, S., van Laar, C., Sidanius, J., 2003. The effects of ingroup and outgroup friendships on ethnic attitudes in college: a longitudinal study. Group Processes and Intergroup Relations 6, 76–92. Lewis, K., Kaufman, J., Christakis, N., in press. The taste for privacy: an analysis of college student privacy settings in an online social network. Journal of Computer-Mediated Communication. Liben-Nowell, D., Novak, J., Kumar, R., Raghavan, P., Tomkins, A., 2005. Geographic routing in social networks. Proceedings of the National Academy of Sciences 102, 11623–11628. Lieberson, S., 2000. A Matter of Taste: How Names, Fashions, and Culture Change. Yale University Press, New Haven. Liu, H., 2007. Social network profiles as taste performances. Journal of ComputerMediated Communication 13 (article 13). Published in digital form at http://jcmc.indiana.edu/vol13/issue1/liu.html.