Related Experiment Video
Updated: Jun 20, 2026

06:18
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
Published on: October 20, 2022
Mutual trust and cooperation in the evolutionary hawks-doves game
Marco Tomassini1, Enea Pestelacci, Leslie Luthi
1Information Systems Department, HEC, University of Lausanne, Switzerland. Marco.Tomassini@unil.ch
Bio Systems
|September 8, 2009
Summary
Cooperation becomes the norm in social networks by allowing individuals to switch partners, even with strong strategy changes. This dynamical network model offers an encouraging outlook for cooperation in social dynamics.
Area of Science:
- Social network analysis
- Evolutionary game theory
- Computational social science
Background:
- The hawks-doves game traditionally predicts a persistent fraction of defectors in large, well-mixed populations.
- Understanding the conditions that promote cooperation in social dilemmas is crucial for societal well-being.
Purpose of the Study:
- To investigate cooperation dynamics in the hawks-doves game using a novel weighted dynamical network model.
- To determine if cooperation can become the norm under conditions of flexible social ties.
Main Methods:
- Development of a new dynamical network model incorporating mutual satisfaction in pairwise interactions.
- Simulation of the hawks-doves game on evolving networks where individuals can sever ties and form new connections.
- Analysis of network structures and the factors enabling cooperator success.
Main Results:
- Cooperation emerges as the dominant strategy when individuals can strategically change undesirable neighbors.
- Cooperative behavior demonstrates robustness against significant perturbations in strategies.
- The study identifies key network structures and mechanisms that facilitate the prevalence of cooperators.
Conclusions:
- Flexible social ties and network adaptability can overcome the limitations of traditional game theory predictions.
- Cooperation can be a stable and thriving norm in social systems, challenging the inevitability of defection.
- This research provides an encouraging perspective on the potential for widespread cooperation in human societies.
Related Concept Videos
Robbers Cave
During the 1950s, the landmark Robbers Cave experiment demonstrated that when groups must compete with one another, intergroup conflict, hostility, and even violence may result. At the Oklahoman summer camp, two troops of boys—termed the Rattlers and the Eagles—took part in a week-long tournament. During this time, their negativity culminated in derogatory name-calling, fistfights, and even vandalism and destruction of property. However, this work also revealed that such tension could be...
Predator-Prey Interactions
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...
Symbiosis
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
Evolutionary Psychology
Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the human psyche...
Convergent Evolution
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
Natural Selection and Mating Preferences
The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
