J.P. Onnela, S. Arbesman, M.C. Gonzalez, A.L. Barabasi, and N.A. Christakis, "Geographic Constraints on Social Network Groups" Plos One, 6(4): e16939 (April 2011); http://dx.doi.org/10.1371/journal.pone.0016939

A.J. O’Malley and N.A. Christakis, "Longitudinal Analysis of Large Social Networks: Estimating the Effect of Health Traits on Changes in Friendship Ties" Statistics in Medicine, 30(9): 950- 964 (April 2011); http://dx.doi.org/10.1002/sim.4190

N.A. Christakis and J.H. Fowler, "Social Network Sensors for Early Detection of Contagious Outbreaks" PLoS One, 5(9): e12948 (September 2010); doi:10.1371/journal.pone.0012948

J.N. Rosenquist, J. Murabito, J.H. Fowler, and N.A. Christakis, "The Spread of Alcohol Consumption Behavior in a Large Social Network" Annals of Internal Medicine, 152(7): 426-433 (April 2010)

S.C. Mednick, N.A. Christakis, and J.H. Fowler, "The Spread of Sleep Behavior Influences Drug Use in Adolescent Social Networks" PLoS One, 5(3): e9775 (March 2010)

97(6): 977-991 (December 2009), "Alone in the Crowd: The Structure and Spread of Loneliness in a Large Social Network" Journal of Personality and Social Psychology, 97(6): 977-991 (December 2009)

J.H. Fowler and N.A. Christakis, "Dynamic Spread of Happiness in a Large Social Network: Longitudinal Analysis Over 20 Years in the Framingham Heart Study" British Medical Journal, 337: a2338 (December 2008); doi:10.1136/bmj.a2338

K. Lewis, J. Kaufman, M. Gonzalez, A. Wimmer, and N.A. Christakis, "Tastes, Ties, and Time: A New (Cultural, Multiplex, and Longitudinal) Social Network Dataset Using Facebook.com" Social Networks, 30(4): 330-342 (October 2008)

N.A. Christakis and J.H. Fowler, "The Collective Dynamics of Smoking in a Large Social Network" New England Journal of Medicine, 358(21): 2249-2258 (May 2008); doi: 10.1056/NEJMsa0706154

N.A. Christakis and J.H. Fowler, "The Spread of Obesity in a Large Social Network Over 32 Years" New England Journal of Medicine, 357(4): 370-379 (July 2007); doi: 10.1056/NEJMsa066082