My research focuses on how individual interactions aggregate to produce collective outcomes in management, economics, political science, and public health.  I am especially interested in networks and social contagion, information aggregation, and markets with positive feedbacks. Topics my research examines include forecasting innovation adoption trends, the wisdom of crowds, how information and products spread through networks, the impact of social influence on marketing strategy, and why people turnout to vote.


PJ Lamberson, “Diffusion in Networks,” in The Oxford Handbook of the Economics of Networks, Oxford, 2016.

Jun Zhang, Liping Tong, PJ Lamberson, Ramon A. Durazo-Arvizu, Amy Luke, and David A. Shoham, “Leveraging Social Influence to Address Overweight and Obesity Using Agent-based Models: The Role of Adolescent Social Networks,” Social Science & Medicine, 2015, 125:203–215.

PJ Lamberson and Scott E. Page, “Tipping Points,” Quarterly Journal of Political Science, 2012, 7:175—208.

PJ Lamberson and Scott E. Page, “The Effect of Feedback Variability on Success in Markets with Positive Feedbacks,” Economics Letters, 2012, 114: 259-261.

PJ Lamberson and Scott E. Page, “Optimal Forecasting Groups,” Management Science, 2012, 58:791—804.

David Shoham, Li Ping Tong, PJ Lamberson, Amy Auchincloss, Jun Zhang, Laura Dugas, Jay Kaufman, Richard Cooper and Amy Luke, “An Actor-based Model of Adolescent Body Size, Screen Time, and Physical Activity,” PLoS ONE, 2012, 7(6): e39795.

PJ Lamberson, “Linking Network Structure and Diffusion through Stochastic Dominance,” Connections, 2011, 31(1) (previously appeared in Complex Adaptive Systems and the Threshold Effect: Papers from the AAAI Fall Symposium, 2009, AAAI Technical Report FS-09-03).

PJ Lamberson, “Social Learning in Social Networks,”  The B.E. Journal of Theoretical Economics, 2010, 10(1): Article 36.

PJ Lamberson, “The Milnor Fiber Conjecture and Iterated Branched Cyclic Covers,”  Transactions of the American Mathematical Society, 2009, 361(9): 4653—4681.

PJ Lamberson, “The Diffusion of Hybrid Electric Vehicles,” in Future Research Directions in Sustainable Mobility and Accessibility, report by Sustainable Mobility Accessibility Research and Transformation (SMART) at the University of Michigan Center for Advancing Research and Solutions for Society (CARSS), 2008.

Mark L. Wildhaber and PJ Lamberson, “Importance of the Habitat Choice Behavior Assumed when Modeling the Effects of Food and Temperature on Fish Populations,” Ecological Modelling, 2004, 175(4): 395—409.

Mark L. Wildhaber, PJ Lamberson and David L. Galat, “A Comparison of Measures of Riverbed Form for Evaluating Distributions of Benthic Fishes,” North American Journal of Fisheries Management, 2003, 23: 543—557.

Nominated for “Best Paper of 2003” by the American Fisheries Society. 

Mark L. Wildhaber, Vernon M. Tabor, JoAnne E. Whitaker, Ann L. Allert, Daniel W. Mulhern, PJ Lamberson, and Kenneth L. Powell, “Ictalurid Populations in Relation to the Presence of a Main-stem Reservoir in a Midwestern Warmwater Stream with Emphasis on the Threatened Neosho Madtom,” Transactions of the American Fisheries Society, 2000, 129: 1264—1280.

Working Papers

PJ Lamberson and Scott E. Page, "Strategies for Competing in Markets with Positive Feedbacks."

PJ Lamberson, “Network Games with Local Correlation and Clustering.”

PJ Lamberson, “Superstars and Long Tails: An Agent Based Model of Consumer Choice”

PJ Lamberson and Georgia Kernell, “Empirical Implications of Including Social Influence in the Calculus of Voting.” 

PJ Lamberson, "Two-way Contagion."