Marco Janssen

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Research Interests

I am a Professor in the School of Sustainability and the Director of the Center for Behavior, Institutions and the Environment. I want to understand how people solve collective problems at different levels of scale, especially those problems related to sustainability of our environment. Our society experience unprecedented challenged to sustain common resource for future generations at a scale we have never experienced before. What makes groups cooperate? What is the role of information? How does the ecological context affect the social fabric? How do they deal with a changing environment? How can we use these insight to address global challenges? To do this research I combine behavioral experiments, agent-based modeling and case study analysis.

Lakeland 2

Marco Janssen Wander Jager | Published Tue Sep 12 17:50:56 2017

Lakeland 2 is a simple version of the original Lakeland of Jager et al. (2000) Ecological Economics 35(3): 357-380. The model can be used to explore the consequences of different behavioral assumptions on resource and social dynamics.

Harvesting daisies in Daisyworld

Marco Janssen | Published Sat Jul 22 00:39:23 2017

Comparing impact of alternative behavioral theories in a simple social-ecological system.

The original Ache model is used to explore different distributions of resources on the landscape and it’s effect on optimal strategies of the camps on hunting and camp movement.

Effect of communication in irrigation games

Marco Janssen Jacopo Baggio | Published Wed Jan 14 04:08:32 2015 | Last modified Wed Aug 9 01:28:22 2017

The model includes different formulations how agents make decisions in irrigation games and this is compared with empirical data. The aim is to test different theoretical models, especially explaining effect of communication.

A haystack-style model of group selection to capture the essential features of colony foundation for queens of the ant based on observation of the ant Pogonomyrmex californicus.

Battle of Perspectives

Marco Janssen Bert Devries | Published Mon Dec 2 02:16:37 2013

How does the world population adapt its policies on energy when it is confronted with a climate change? This model combines a climate-economy model with adaptive agents.

A simple model of random encounters of materials that produces distributions as found in the archaeological record.

Cultural group selection model of agents playing public good games and who are able to punish and punish back.

Peer reviewed Ache hunting

Marco Janssen Kim Hill | Published Tue Aug 13 21:27:28 2013 | Last modified Sun Feb 26 18:14:57 2017

Agent-based model of hunting behavior of Ache hunter-gatherers from Paraguay. We evaluate the effect of group size and cooperative hunting

Evolution of Conditional Cooperation

Marco Janssen Miles Manning Oyita Udiani | Published Thu Aug 1 04:03:07 2013 | Last modified Fri Dec 6 05:35:19 2013

Cultural group selection model used to evaluate the conditions for agents to evolve who have other-regarding preferences in making decisions in public good games.

Evolution of cooperative strategies from first principles

Marco Janssen | Published Mon Jan 4 22:49:23 2010 | Last modified Sat Apr 27 20:18:30 2013

The purpose of this model is to study the evolution of cooperation when agents are endowed with a limited set of receptors, a set of elementary actions and a neural network agents use to make decision

Irrigation game

Marco Janssen | Published Mon Jul 23 04:15:12 2012 | Last modified Sat Apr 27 20:18:37 2013

Irrigation game calibrated on experimental data

Peer reviewed Evolution of Cooperation in Asymmetric Commons Dilemmas

Marco Janssen Nathan Rollins | Published Fri Aug 20 18:41:16 2010 | Last modified Sat Apr 27 20:18:30 2013

This model can be used to explore under which conditions agents behave as observed in field experiments on irrigation games.

Nudging agents in social networks for collective action

Marco Janssen | Published Sun Aug 14 15:38:44 2011 | Last modified Sat Apr 27 20:18:40 2013

Agents are linked in a social-network and make decisions on which of 2 types of behavior to adopt. We explore consequences of different information feedback and providing targeted feedback to individuals.

Vulnerability of Cooperation Due to Limited Vision

Marco Janssen | Published Thu Dec 2 23:00:56 2010 | Last modified Sat Apr 27 20:18:53 2013

This model describes the consequences of limited vision of agents in harvesting a common resource. We show the vulnerability of cooperation due to reduced visibility of the resource and other agents.

Evolution of cooperation via indirect reciprocity by image scoring

Marco Janssen | Published Fri Oct 22 19:35:45 2010 | Last modified Sat Apr 27 20:18:30 2013

The model explores the possibility of the evolution of cooperation due to indirect reciprocity when agents derive information about the past behavior of the opponent in one-shot dilemma games.

Evolution of cooperation with strangers

Marco Janssen | Published Fri Oct 15 20:05:27 2010 | Last modified Wed Nov 13 23:46:20 2013

The model is used to study the conditions under which agents will cooperate in one-shot two-player Prisoner’s Dilemma games if they are able to withdraw from playing the game and can learn to recogniz

Tuberculosis and helminthes

Marco Janssen Nathan Rollins Alhaji Cherif Marcel Hurtado | Published Sat Jun 5 02:22:57 2010 | Last modified Sat Apr 27 20:18:51 2013

The purpose of this model is to investigate the consequences of helminthes in public health policy to eradicate tuberculosis. Helminthes surprise immune system responses and without changes in hygiene

Evolution of shedding games

Marco Janssen | Published Sun May 16 21:20:17 2010 | Last modified Sat Apr 27 20:18:32 2013

This simulates the evolution of rules of shedding games based on cultural group selection. A number of groups play shedding games and evaluate the consequences on the average length and the difficulty

Model to simulation the landscape of possible shedding games

Marco Janssen | Published Sun May 16 21:16:34 2010 | Last modified Sat Apr 27 20:18:40 2013

This model simulates 2048 versions of shedding games and evaluates the consequences on the average length and the difficulty of the game agents experience. The purpose of the model is to understand th

Population aggregation in ancient arid environments

Marco Janssen | Published Tue May 4 18:26:43 2010 | Last modified Sat Apr 27 20:18:43 2013

The purpose of this model is to help understand how prehistoric societies adapted to the prehistoric American southwest landscape. In the American southwest there is a high degree of environmental var

Evolution of altruistic punishment

Marco Janssen | Published Wed Sep 3 21:01:26 2008 | Last modified Thu Nov 6 23:43:37 2014

In the model agents make decisions to contribute of not to the public good of a group, and cooperators may punish, at a cost, defectors. The model is based on group selection, and is used to understan

Peer reviewed Artificial Anasazi

Marco Janssen | Published Tue Sep 7 05:18:37 2010 | Last modified Sat Apr 27 20:18:23 2013

Replication of the well known Artificial Anasazi model that simulates the population dynamics between 800 and 1350 in the Long House Valley in Arizona.

Lansing-Kremer model of the Balinese irrigation system

Marco Janssen | Published Mon Jun 16 22:33:16 2008 | Last modified Tue Dec 16 05:18:53 2014

This is a NetLogo replication of the hill-climbing version of the Lansing-Kremer model of Balinese irrigation.

Coming soon.

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