Related Experiment Video
Updated: Jul 13, 2026
09:45
New Variations for Strategy Set-shifting in the Rat
Published on: January 23, 2017
Evolution of cooperative strategies from first principles
Mikhail Burtsev1, Peter Turchin
1Department of Non-linear Dynamics, Keldysh Institute of Applied Mathematics of RAS, Moscow 125047, Russia. mbur@narod.ru
Nature
|April 21, 2006
Summary
Cooperative behavior can evolve in simulations when agents can perceive external markers of others. This study models complex strategies, showing cooperation emerges from simple rules and evolution.
Area of Science:
- Evolutionary biology
- Social sciences
- Game theory
Background:
- Understanding the evolution of cooperative behavior is a major challenge in biological and social sciences.
- Existing theories include kin selection, reciprocity, and multilevel selection.
- Game theory, particularly agent-based simulations, is a key tool for analyzing cooperation.
Purpose of the Study:
- To test evolutionary game theory with a more complex model.
- To explore the emergence of cooperative strategies from elementary actions and a neural net.
- To investigate the conditions under which cooperation can evolve.
Main Methods:
- Developed a computer model with agents possessing limited receptors and elementary actions.
- Allowed evolution to construct strategies from these components, rather than predetermining them.
- Simulated interactions to observe emergent behavioral strategies.
Main Results:
- The model successfully evolved well-known strategies like dove, hawk, and bourgeois.
- Two novel cooperative strategies, cooperative attack and defense, emerged from the simulations.
- Cooperative strategies evolved under minimalist assumptions when agents could perceive heritable external markers.
Conclusions:
- Cooperative behaviors can evolve even with simple agent structures and learning capabilities.
- The ability to perceive external markers is crucial for the evolution of cooperation.
- This model provides a more stringent test of game-theoretic explanations for cooperation.
Related Concept Videos
01:52Persuasion Strategies
Researchers have tested many persuasion strategies, including the foot-in-the door and the door-in-the-face techniques, in a variety of contexts. Ultimately, the principles are effective in selling products and changing people’s attitude, ideas, and behaviors (Cialdini & Goldstein, 2004).
02:12Relationship Formation
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
01:12Strategies of Self-Presentation I: Strategic Self-Presentation
Strategic self-presentation refers to individuals' intentional efforts to influence how others perceive them. This process is employed in various social and professional settings, such as job interviews, dating, politics, and legal contexts, where individuals seek to shape impressions to gain social or material advantages. While people generally present themselves in ways that align with their authentic characteristics, external factors, such as cognitive load, can hinder their ability to...
01:29Impression Management Techniques III: Aligning Actions
Aligning actions are communicative strategies individuals employ to maintain social harmony and preserve personal identity in the face of potential disruptions to social norms. These actions are particularly important in managing social impressions when one's behavior might be seen as inappropriate, incompetent, or morally questionable.Types of Aligning ActionsThe three principal types of aligning actions are disclaimers, accounts, and apologies.DisclaimersDisclaimers are preventive; they are...
01:27Relationship Growth
Interpersonal relationships progress through stages, beginning with awareness and moving toward mutuality, where emotional connections deepen. While many relationships remain at moderate levels of mutuality, deeper connections form through self-disclosure, trust, and interdependence.Self-DisclosureSelf-disclosure involves revealing personal information, starting with surface-level details and gradually progressing to more intimate content. As trust grows, individuals feel more comfortable...
01:26Microbial Interactions: Cooperation
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...