ArticlePLoS computational biology2021
Intriguing effects of selection intensity on the evolution of prosocial behaviors.
Article in PLoS computational biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Promoters of cooperation in evolutionary games.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Article
- Graph-structured populations elucidate the role of deleterious mutations in long-term evolution.Nature communications · 2025Article
- Density amplifiers of cooperation for spatial games.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Frequency-dependent returns in nonlinear public goods games.Journal of the Royal Society, Interface · 2024Article
- Evolution of reciprocity with limited payoff memory.Proceedings. Biological sciences · 2024Article
- Does Spending More Always Ensure Higher Cooperation? An Analysis of Institutional Incentives on Heterogeneous Networks.Dynamic games and applications · 2023Article
- Optimization of institutional incentives for cooperation in structured populations.Journal of the Royal Society, Interface · 2023Article
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Authors and funding
3 authors.
Funding
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Abstract
In many models of evolving populations, genetic drift has an outsized role relative to natural selection, or vice versa. While there are many scenarios in which one of these two assumptions is reasonable, intermediate balances between these forces are also biologically relevant. In this study, we consider some natural axioms for modeling intermediate selection intensities, and we explore how to quantify the long-term evolutionary dynamics of such a process. To illustrate the sensitivity of evolutionary dynamics to drift and selection, we show that there can be a "sweet spot" for the balance of these two forces, with sufficient noise for rare mutants to become established and sufficient selection to spread. This balance allows prosocial traits to evolve in evolutionary models that were previously thought to be unconducive to the emergence and spread of altruistic behaviors. Furthermore, the effects of selection intensity on long-run evolutionary outcomes in these settings, such as when there is global competition for reproduction, can be highly non-monotonic. Although intermediate selection intensities (neither weak nor strong) are notoriously difficult to study analytically, they are often biologically relevant; and the results we report suggest that they can elicit novel and rich dynamics in the evolution of prosocial behaviors.
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