MEMORY BOOSTS COOPERATION

Ramón Alonso-Sanz () and Margarita Martín ()
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Ramón Alonso-Sanz: ETSI Agrónomos (Estadística), UPM, C. Universitaria. 28040, Madrid, Spain
Margarita Martín: F.Veterinaria (Bioquímica y Biol. Molecular IV), UCM, C. Universitaria. 28040, Madrid, Spain

International Journal of Modern Physics C (IJMPC), 2006, vol. 17, issue 06, 841-852

Abstract: The standard spatial formulation of the iterated Prisoner's Dilemma is ahistoric (memoryless): i.e., only the results generated in the last round are taken into account in deciding the next choice. Historic memory can be implemented by featuring players by a summary of their previous winnigs and choices. Here we study the effect of limited trailing memory: only the last three iterations are recorded. The effects of full and discounted memory are assessed. It is concluded that this short-type memory stimulates cooperation.

Keywords: Prisoner's Dilemma; spatial; memory (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (2)

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DOI: 10.1142/S012918310600928X

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