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From imitation to collusion: long-run learning in a low-information environment

[working paper]

Friedman, Daniel
Huck, Steffen
Oprea, Ryan
Weidenholzer, Simon

Corporate Editor
Wissenschaftszentrum Berlin für Sozialforschung gGmbH

Abstract

We explore the stability of imitation in a 1,200-period experimental Cournot game where subjects do not know the payoff function but see the output quantities and payoffs of each oligopolist after every period. In line with theoretical predictions and previous experimental findings, our oligopolies ... view more

We explore the stability of imitation in a 1,200-period experimental Cournot game where subjects do not know the payoff function but see the output quantities and payoffs of each oligopolist after every period. In line with theoretical predictions and previous experimental findings, our oligopolies reach highly competitive levels within 50 periods. However, already after 100 periods quantities start to drop and, eventually fall deep into collusive territory without pausing at the Nash equilibrium. Our results demonstrate how groups of subjects can learn their way out of dysfunctional heuristics, and thus suggest the need for a new theory of how cooperation emerges. (author's abstract)... view less


Wir untersuchen die Stabilität von Imitationsverhalten in einem experimentellen Cournot-Oligopol mit 1.200 Perioden, in denen die Teilnehmer zwar keine Informationen über die Gewinnfunktion haben, aber nach jeder Periode die Output-Mengen und den Gewinn jedes Oligopolisten sehen können. Im Einklang ... view more

Wir untersuchen die Stabilität von Imitationsverhalten in einem experimentellen Cournot-Oligopol mit 1.200 Perioden, in denen die Teilnehmer zwar keine Informationen über die Gewinnfunktion haben, aber nach jeder Periode die Output-Mengen und den Gewinn jedes Oligopolisten sehen können. Im Einklang mit theoretischen Vorhersagen und Befunden vorheriger Experimente, erreichen unsere Oligopole hoch-kompetitive Levels innerhalb von 50 Perioden. Aber bereits nach 100 Perioden fangen die Output-Mengen an zu fallen, im weiteren Verlauf sogar bis tief in kollusive Bereiche, ohne am Nash-Gleichgewicht zu pausieren. Unsere Befunde veranschaulichen, wie Gruppen von Personen ihren Weg aus dysfunktionalen Heuristiken heraus finden können, und legen daher die Notwendigkeit einer neuen Theorie über die Entstehung von Kooperation nahe. (Autorenreferat)... view less

Keywords
imitation; experiment; behavior; stability; learning; dynamism; cooperation

Classification
Social Psychology
Basic Research, General Concepts and History of Education and Pedagogics

Document language
English

Publication Year
2012

City
Berlin

Page/Pages
37 p.

Series
Discussion Papers / Wissenschaftszentrum Berlin für Sozialforschung, Forschungsschwerpunkt Markt und Entscheidung, Abteilung Ökonomik des Wandels, SP II 2012-301r

Handle
https://hdl.handle.net/10419/85300

Status
Published Version; reviewed

Licence
Deposit Licence - No Redistribution, No Modifications


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© 2007 - 2025 Social Science Open Access Repository (SSOAR).
Based on DSpace, Copyright (c) 2002-2022, DuraSpace. All rights reserved.