Dr. Stefano Balietti

Contact2020/09: S. Balietti Foto

Phone: +49-6221-54 5091

Email: /

Office hour: Please make an appointment via email

Personal website:

nodeGame Website:


Short Summary

I am fellow at the Center for European Social Science Research at Mannheim University (MZES) and a postdoc at the Alfred-Weber Institute of Economics at Heidelberg University.

Previously, I worked at Microsoft Research Computational Social Science NYC, the Northeastern Network Science Institute, and the Harvard Institute for Quantitative Social Science.

I obtained my PhD in Computational Social Science at ETH Zurich.


Research Interests

  • consensus formation, social influence, and polarization;
  • incentives schemes for collective intelligence, in particular peer review systems;
  • governance in blockchain systems;
  • optimal experimental designs, Bayesian optimization with Gaussian processes;
  • inequality, perception thereof and its consequences;
  • noise, efficiency and equality in coordination and public-good games;
  • philosophy of science, in particular Paul Feyerabend's body of work.


Software Development

I am also an active open source developer. I am the creator of the nodeGame JavaScript platform for conducting real-time online group behavior:




"Adding noise to the Institution: An Experimental Welfare Investigation of the Contribution-Based Grouping Mechanism" H.H. Nax, S. Balietti, R.O. Murphy, and D. Helbing Social Choice and Welfare Volume 50, Issue 2, pp. 213-245 [Link]


"How Do Individuals Share the Costs of Climate Change Mitigation? Evidence from an Online Game Experiment" B. Anderson, T. Bernauer, and S. Balietti Climatic Change Volume 142, Issue 3-4, pp. 447-461 [Link]

"nodeGame: Real-Time, Synchronous, Online Experiments in the Browser" Behavior Research Methods Volume 49, Issue 5, pp. 1696-1715 [Link 1] [Link 2]


"Peer Review and Competition in the Art Exhibition Game" S. Balietti, R.L. Goldstone, and D. Helbing, Proceedings of the National Academy of Sciences (PNAS) Volume 113, Number 30 (2016) 8414-8419 [Link]


"On Disciplinary Fragmentation and Scientific Progress" S. Balietti, M. Mäs, D. Helbing PLoS ONE 10(3): e0118747. [Link]


"Agent-Based Modeling" D. Helbing, S. Balietti book chapter in 'Social Self-Organization'. Series: Understanding Complex Systems. Helbing, Dirk (Ed.) Springer, (2012) 25-70 [Link] [Link]


"Understanding, Creating, and Managing Complex Techno-Socio-Economic Systems: Challenges and Perspectives" D. Helbing, S. Balietti, S. Bishop and P. Lukowicz The European Physical Journal - Special Topics. Volume 195, Number 1 (2011), 165-186 [Link]

"From Social Data Mining to Forecasting Socio-Economic Crises" D. Helbing and S. Balietti The European Physical Journal - Special Topics. Volume 195, Number 1 (2011), 3-68 [Link]

"From Social Simulation to Integrative System Design" D. Helbing and S. Balietti The European Physical Journal - Special Topics. Volume 195, Number 1 (2011), 69-100 [Link]

"How to Create an Innovation Accelerator" D. Helbing and S. Balietti The European Physical Journal - Special Topics. Volume 195, Number 1 (2011), 101-136 [Link]


"Fundamental and Real-World Challenges in Economics". D. Helbing and S. Balietti Science and Culture 76(9-10), 399-417 [Link]


Working Papers

Understanding Polarization in Attitudes Towards Redistribution

Preferences over Income Distributions

Human Evaluation of Text-Based Games Using the TextWorld Platform

Stratified Reward Structures for Creative Production Markets

Fast Model-Selection through Adapting Design of Experiments Maximizing Information Gain [Link]

Tournaments for Collective Intelligence: a Survey of the Literature

Group Size and Efficiency in Leader/Followers Tournaments

Efficiency Gains in Coordination in Information Poor Environments [Link]

Paul Feyerabend's Peer Review



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