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Updated: Jun 22, 2026
05:15
The (Spatial) Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
Published on: February 19, 2018
Spatial order prevails over memory in boosting cooperation in the iterated prisoner's dilemma
1Bristol Institute of Technology, University of the West of England at Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, England. ramon.alonso@upm.es
Chaos (Woodbury, N.Y.)
|July 2, 2009
Summary
Memory significantly boosts cooperation in spatial iterated prisoner's dilemma games on ordered networks. However, this effect diminishes with increasing network disorder, highlighting the importance of network structure for promoting cooperation.
Area of Science:
- Computational Social Science
- Game Theory
- Network Science
Background:
- The iterated prisoner's dilemma (IPD) is a fundamental model for studying cooperation.
- Spatial versions of IPD explore how network structure influences strategic interactions.
- Understanding factors that promote cooperation in complex systems is crucial.
Purpose of the Study:
- To investigate the impact of player memory on cooperation in a spatial IPD.
- To analyze how network topology, specifically rewiring, affects the emergence of cooperation.
- To determine the interplay between memory and network structure in fostering cooperative strategies.
Main Methods:
- Simulations of a spatial iterated prisoner's dilemma on a square lattice.
- Varying degrees of random rewiring to alter network topology.
- Implementing player memory ranging from one to all past iterations.
- Analyzing strategy imitation based on neighbors' optimal choices.
Main Results:
- Increased memory length significantly enhances cooperation on ordered lattices.
- Cooperation levels decrease as the degree of network rewiring (disorder) increases.
- Memory's ability to promote cooperation is substantially reduced in highly disordered networks.
Conclusions:
- Memory is a powerful driver of cooperation in structured spatial networks.
- Network disorder, introduced by rewiring, undermines the cooperative benefits of memory.
- Future research should consider the joint effects of network topology and agent memory in complex systems.
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