On Explaining Why the (Human) World is Rich
European Economic Review, Volume 174, May 2025, 104969.
The wealth of the modern world is a natural historical marvel. Explaining it has traditionally been the purview of economic historians, as exemplified by the recent book How the World Became Rich by Mark Koyama and Jared Rubin. But economic historians tend to only ask process-oriented “how” questions and “by what means” questions of the Great Enrichment. The eight co-authors of Explaining Technology, who are not economic historians, engage in the debate asking a different question. Their goal is to explain the exponential shape of our enrichment with a model of the combinatorial evolution of technology. With an eye toward how we ask questions of the Great Enrichment, I propose broadening our inquiries to include questions typically overlooked in modern economic science, namely, “What form does it take? and “For what purpose?”
Territory in the State of Nature
Journal of Economic Behavior and Organization, 219, March 2024, with Jordan Adamson.
In this paper we examine territorial behavior in the ecological conditions that foster conflict. We develop an economic model that isolates the effects of resource skew on territorial ranges, as well as their interactions with unequal appropriation abilities. We then conduct a controlled laboratory experiment to test the predictions of our model and find that observed behavior tends to cluster around the equilibrium predictions and that all comparative statics have the predicted sign. Additionally, we find that equally strong appropriators select more exclusive and less overlapping ranges than what is predicted with symmetric resources, while weaker appropriators choose more engulfed ranges than what is predicted with skewed resources.
Comparative Economics: How Studying Other Primates Helps Us Better Understand the Evolution of Our Own Economic Decision-Making
Philosophical Transactions of the Royal Society B: Biological Sciences, 378(1876), May 2023, with Sarah F. Brosnan.
Anything for a Cheerio: Brown Capuchins (Sapajus [Cebus] apella) Consistently Coordinate in an Assurance Game for Unequal Payoffs
American Journal of Primatology, 83(10), October 2021, with Lauren M. Robinson, María Martínez, Kelly L. Leverette, and Sarah F. Brosnan.
Consistent Differences in a Virtual World Model of Ape Societies
Scientific Reports, 10 (14075), August 2020, with Sarah Brosnan, Elizabeth Londsdorf, and Crickette Sanz.
Capuchin Monkeys (Sapajus [Cebus] apella) Play Nash Equilibria, But Their Decisions Are Not Likely Influenced by Oxytocin
American Journal of Primatology, 81(4), April 2019, with Mackenzie F. Smith, Kelly Leverett, and Sarah F. Brosnan.
Human and Monkey Responses in a Symmetric Game of Conflict with Asymmetric Equilibria
Journal of Economic Behavior and Organization, 142, October 2017, with Sarah F. Brosnan, Sara A. Price, Kelly Leverett, Laurent Prétôt, and Michael Beran.
Differential Responding by Rhesus Monkeys (Macaca mulatta) and Humans (Homo sapiens) to Variable Outcomes in the Assurance Game
Animal Behavior and Cognition, 1(3), August 2014, with Audrey E. Parrish, Sarah F. Brosnan, and Michael J. Beran.
* Lead article
Comparative Approaches to Studying Strategy: Towards an Evolutionary Account of Primate Decision Making
Evolutionary Psychology, 11(3), July 2013, with Sarah F. Brosnan, Michael J. Beran, Audrey E. Parrish, and Sara A. Price.
Old World Monkeys are More Similar to Humans than New World Monkeys When Playing a Coordination Game
Proceedings of the Royal Society B: Biological Sciences, 279(1733), 22 April 2012, published ahead of print 9 November 2011, with Sarah F. Brosnan and Michael J. Beran.
Responses to the Assurance Game in Monkeys, Apes, and Humans Using Equivalent Procedures
Proceedings of the National Academy of Sciences, February 7, 2011 Early Edition, with Sarah F. Brosnan, Audrey Parrish, Michael J. Beran, Timothy Flemming, Lisa Heimbauer, Catherine Talbot, Susan P. Lambeth, and Steven J. Schapiro