Social goods dilemmas in heterogeneous societies

McAvoy, Alex; Allen, Benjamin; Nowak, Martin A.

doi:10.1038/s41562-020-0881-2

Cited by 75 publications

(75 citation statements)

References 93 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…"games"). Provided selection is sufficiently weak, analytical results on the effects of heterogeneity on an evolving population can be derived in that setting as well [46]. In contrast, the analytical results presented here hold for any selection strength, with the trade-off being that they require the assumptions of frequency-independent fitness and sufficient regularity in the population structure and coloring scheme.…”

Section: Discussionmentioning

confidence: 98%

The Moran process on 2-chromatic graphs

Kaveh¹,

McAvoy²,

Chatterjee³

et al. 2020

PLoS Comput Biol

Self Cite

View full text Add to dashboard Cite

Resources are rarely distributed uniformly within a population. Heterogeneity in the concentration of a drug, the quality of breeding sites, or wealth can all affect evolutionary dynamics. In this study, we represent a collection of properties affecting the fitness at a given location using a color. A green node is rich in resources while a red node is poorer. More colors can represent a broader spectrum of resource qualities. For a population evolving according to the birth-death Moran model, the first question we address is which structures, identified by graph connectivity and graph coloring, are evolutionarily equivalent. We prove that all properly two-colored, undirected, regular graphs are evolutionarily equivalent (where “properly colored” means that no two neighbors have the same color). We then compare the effects of background heterogeneity on properly two-colored graphs to those with alternative schemes in which the colors are permuted. Finally, we discuss dynamic coloring as a model for spatiotemporal resource fluctuations, and we illustrate that random dynamic colorings often diminish the effects of background heterogeneity relative to a proper two-coloring.

show abstract

Section: Discussionmentioning

confidence: 98%

The Moran process on 2-chromatic graphs

Kaveh¹,

McAvoy²,

Chatterjee³

et al. 2020

PLoS Comput Biol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Cohen et al (2016) estimate billions of dollars in consumer surplus from the UberX car service alone. 6 Brynjolfsson, Eggers, and Gannamaneni (2017) provide perhaps the most comprehensive estimate of the consumer surplus of the Internet by using (incentive compatible) choice experiments. For example, in one study, they asked people how much they would need to be paid in order to not have access to Facebook for a month.…”

Section: Consumer-level Effectsmentioning

confidence: 99%

Digital Economics

Goldfarb

Tucker

2019

Journal of Economic Literature

1,182

417

View full text Add to dashboard Cite

Digital technology is the representation of information in bits. This technology has reduced the cost of storage, computation, and transmission of data. Research on digital economics examines whether and how digital technology changes economic activity. In this review, we emphasize the reduction in five distinct economic costs associated with digital economic activity: search costs, replication costs, transportation costs, tracking costs, and verification costs. (JEL D24, D83, L86, O33, R41)

show abstract

“…This interpretation naturally gives rise to other kinds of payoff accounting, such as concentrated or diffuse benefits [39]. When benefits are concentrated, every producer chooses a random neighbor and pays a cost, c , to confer a benefit, b , on this neighbor only (“ cf -goods,” where “ c ” indicates that the benefit is concentrated and “ f “ indicates that the cost is fixed).…”

Section: Evolutionary Games and The Intensity Of Selectionmentioning

confidence: 99%

“…In the limit of weak selection, it is known that one can replace stochastic payoffs with deterministic payoffs (i.e. expected payoffs) without a loss of generality [39]. In particular, cf - and ff -goods exhibit identical dynamics when selection is sufficiently weak, on any population structure.…”

Section: Examplesmentioning

confidence: 99%

Intriguing effects of selection intensity on the evolution of prosocial behaviors

McAvoy

Rao

Hauert

2021

Preprint

Self Cite

View full text Add to dashboard Cite

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 subsequently spread. In particular, 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 here suggest that they can elicit novel and rich dynamics in the evolution of prosocial behaviors.

show abstract

Social goods dilemmas in heterogeneous societies

Cited by 75 publications

References 93 publications

The Moran process on 2-chromatic graphs

The Moran process on 2-chromatic graphs

Digital Economics

Intriguing effects of selection intensity on the evolution of prosocial behaviors

Contact Info

Product

Resources

About