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Related Experiment Video

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Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking
13:40

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Published on: December 16, 2010

The multi-player performance-enhancing drug game.

Kjetil K Haugen1, Tamás Nepusz, Andrea Petróczi

  • 1Faculty of Economics, Informatics and Social Science, Molde Univeristy College, Molde, Norway.

Plos One
|May 22, 2013
PubMed
Summary

This study introduces a multi-player game model for doping, revealing distinct Nash-equilibria (NE) structures. Prize function design significantly impacts doping outcomes, leading to either universal or no doping, or complex mixed strategies.

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Area of Science:

  • Economics
  • Game Theory
  • Sports Science

Background:

  • Classical economic models of doping often focus on individual decision-making.
  • Limited research exists on the strategic interactions and equilibrium outcomes in multi-player doping scenarios.

Purpose of the Study:

  • To formally model and analyze doping as a multi-player game.
  • To investigate the impact of different prize functions on the resulting Nash-equilibria (NE) in doping contexts.

Main Methods:

  • Development of a game-theoretic framework for multi-player doping.
  • Analytical investigation of equilibrium structures under varying prize function specifications.

Main Results:

  • Identified at least two distinct structures of Nash-equilibria (NE).
  • Linear prize functions result in NEs where all or no players dope.
  • Non-linear prize functions yield more complex NEs with varied doping patterns.

Conclusions:

  • The structure of prize functions critically determines doping equilibria in multi-player settings.
  • Non-linear prize functions introduce significant complexity and unpredictability into doping dynamics.