Roots of Human Sociality Phase II:

Research Team and Advisers at the California Institute of Technology, 2004

Starting left: Bolyanatz, Cardenas, Gwako, Patton, Johnson, Harris, McElreath, Henrich, Ensminger, Marlowe, Barr, Wilson, Tracer, Gurven, Barrett, and Lesorogol. Photo by Stuart Plattner.

Roots of Human Sociality Phase II: Joint Publications and Manuscripts

Joseph Henrich, Jean Ensminger, Richard McElreath, Abigail Barr, Clark Barrett, Alexander Bolyanatz, Juan Camilo Cardenas, Michael Gurven, Edwins Gwako, Natalie Henrich, Carolyn Lesorogol, Frank Marlowe, David Tracer, and John Ziker
Markets, Religion, Community Size and the Evolution of Fairness and Punishment. PDF document
Science.  March, 2010,  327:  1480-1484.

Joseph Henrich, Richard McElreath, Abigail Barr, Jean Ensminger, Clark Barrett, Alexander Bolyanatz, Juan Camilo Cardenas, Michael Gurven, Edwins Gwako, Natalie Henrich, Carolyn Lesorogol, Frank Marlowe, David Tracer, and John Ziker
Costly Punishment Across Human Societies.
Science.  June, 2006, 312(23):  1767-1770.

Joseph Henrich and Jean Ensminger
Introduction, Project History, and Guide to the Volume (Chapter 1).
For publication in Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective.  Jean Ensminger and Joseph Henrich, eds.  Submitted for publication to The Russell Sage Foundation.

Joseph Henrich and Jean Ensminger
Theoretical Foundations:  The Coevolution of Social Norms, Intrinsic Motivation, Markets, and the Institutions of Complex Societies (Chapter 2).
For publication in Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective.  Jean Ensminger and Joseph Henrich, eds.  Submitted for publication to The Russell Sage Foundation.

Jean Ensminger, Abigail Barr, and Joseph Henrich
Cross-Cultural Methods, Sites, and Variables (Chapter 3).
For publication in Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective.  Jean Ensminger and Joseph Henrich, eds.  Submitted for publication to The Russell Sage Foundation.

Joseph Henrich, Jean Ensminger, Abigail Barr, and Richard McElreath
Major Empirical Results:  Markets, Religion, Community Size and the Evolution of Fairness and Punishment (Chapter 4).
For publication in Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective.  Jean Ensminger and Joseph Henrich, eds.  Submitted for publication to The Russell Sage Foundation.

Roots of Human Sociality Phase II: Map of the 15 Research Sites

Map of the 15 Research Sites

 

 

 

 

 

 

 

Roots of Human Sociality Phase II: Researchers and Ethnographic Summary of Societies

 

 

 

 

 

 

 

 

 

 

 

Researcher Group Nation/Region Language Environment Economic Base Residence
Abigail Barr Accra City Ghana Mixed Urban Wage Work Sedentary
David Tracer Au Papua New Guinea/Torricelli Torricelli/Wapei Mountainous Tropical Forest Foraging/Horticulture Sedentary
John Ziker Dolgan/Nganasan Russia/Siberia Turkic/Samoyedic Tundra-Taiga Hunting/Fishing/Wages Semi-sedentary
Edwins Laban Gwako Gusii Kenya Ekegusii Fertile High Plains Mixed Farming/Wage  Work Sedentary
Frank Marlowe Hadza Tanzania Khoisan/Isolate Savanna-Woodlands Foraging Nomadic
Richard McElreath Isanga Tanzania Bantu Mountainous Forest Agriculture/Wage work Sedentary
Edwins Laban Gwako Maragoli Kenya Logoli Fertile Plains Mixed Farming/Wage Work Sedentary
Jean Ensminger Orma Kenya Cushitic Semi-arid Savanna Pastoralism Semi-nomadic
Carolyn Lesorogol Samburu Kenya Nilotic Semi-arid Savanna Pastoralism Semi-nomadic
Juan Camilo Cardenas Sanquianga Columbia/Pacific Coast Spanish Mangrove Forest Fisheries (Fish/clams/shrimp) Sedentary
Clark Barrett Shuar Ecuador/Amazonia Jivaroan Tropical Forest Horticulture Sedentary
Alexander Bolyanatz Sursurunga Papua New Guinea/New Ireland Austronesian Coastal Tropical Island Horticulture Sedentary
Michael Gurven Tsimane Bolivia/Amazonia Macro-Panoan Isolate Tropical Forest Foraging/Horticulture Semi-nomadic
Jean Ensminger U.S., Rural Missouri U.S./Rural Missouri Germanic Prairie Wage Work Sedentary
Joseph Henrich Yasawans Fiji/Yasawa Island Austronesian Coastal Tropical Island Horticulture/Marine Foraging Sedentary

 

 

 

Roots of Human Sociality Phase II: Mean Dictator Game

Mean Dictator Game Offers for Each Population Plotted Against Mean Value of Market Integration (MI).
Error bars are bootstrapped standard errors (bca corrected) on the population mean.

 

 

 

 

 

Document Repository

Game Procedures and Protocols (DG, UG, TPP) [pdf]
Master Excel Data Entry File [xls]
NSF-Proposal [pdf]
Operationalization of Key Variables and Data Sheets [pdf]
Scripts–Core Games (DG, UG TPP) [pdf]
Script–Trust Game [pdf]
Social Network Analysis [pdf]

 

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