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Evolution of Direct Reciprocity in Complex Environments

Descripción del proyecto

Análisis profundo de la evolución de la cooperación

La estrategia del «toma y daca» en la evolución de la cooperación se refiere a que la cooperación de una persona depende del comportamiento de su compañero en la interacción anterior. Poco se sabe sobre las condiciones en las que aparece el «toma y daca» y cómo se manifiesta en entornos cambiantes. El proyecto E-DIRECT, financiado con fondos europeos, investiga la reciprocidad directa como un mecanismo fundamental para la cooperación entre personas sin parentesco. Se centra en el desarrollo de una teoría de la reciprocidad en grupos heterogéneos basada en modelos matemáticos. El proyecto también elaborará una teoría de la reciprocidad en entornos cambiantes. El objetivo principal del proyecto es crear un marco novedoso y nuevas herramientas para estudiar la evolución del comportamiento estratégico y la cooperación.

Objetivo

Direct reciprocity is a fundamental mechanism for cooperation among non-kin. It is based on the idea that individuals are more cooperative when they interact in stable groups in which retaliation is possible. To model the evolution of reciprocity, researchers have used the framework of repeated games. Traditionally, these models rest on two assumptions. First, players are symmetric: they coincide in their strategic options, in their incentives to cooperate, and how they discount future payoffs. Second, the players' environment is fixed: players face the same game, with the same payoffs, in every round. Both assumptions are crucial, as they promote conditionally cooperative strategies like Tit-for-Tat. Yet in most natural applications, individuals are heterogeneous, and the games they play change over time. To address these two critical model limitations, we need to expand the theory of reciprocity. We focus on the following objectives: 1) Develop a theory of reciprocity in heterogeneous groups. Based on mathematical models and simulations, we study how different dimensions of heterogeneity affect the evolution of reciprocity. 2) Develop a theory of reciprocity in changing environments. Here, we explore the evolution of cooperation when the players' environment (and hence their feasible payoffs and strategies) can change from one round to the next. We ask which environmental feedback is most favorable to cooperation. 3) Explore the dynamics of asymmetric games with changing environments. Here, we analyze the intricacies that arise when both previous sources of complexity are present. 4) Verify the theory using behavioral experiments with human subjects. The success of the project will establish a novel framework and new tools to study the evolution of strategic behavior in non-constant environments. It will significantly enhance our ability to predict when reciprocity emerges under natural conditions.

Régimen de financiación

ERC-STG - Starting Grant

Institución de acogida

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Aportación neta de la UEn
€ 1 441 500,00
Dirección
HOFGARTENSTRASSE 8
80539 Munchen
Alemania

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Región
Bayern Oberbayern München, Kreisfreie Stadt
Tipo de actividad
Research Organisations
Enlaces
Coste total
€ 1 441 500,00

Beneficiarios (1)