Dynamics of human  decisions

Renato Soeiro; Abdelrahim Mousa; Tânia R. Oliveira; Alberto A. Pinto

doi:10.3934/jdg.2014.1.121

Article Contents

2014, Volume 1, Issue 1: 121-151. Doi: 10.3934/jdg.2014.1.121

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Dynamics of human decisions

1.
LIAAD - INESC TEC and Department of Mathematics, Faculty of Science, University of Porto, Rua do Campo Alegre, 687, 4169-007

Received: January 2012

Revised: November 2012

Published: January 2014

Abstract / Introduction Related Papers Cited by

Abstract

We study a dichotomous decision model, where individuals can make the decision yes or no and can influence the decisions of others. We characterize all decisions that form Nash equilibria. Taking into account the way individuals influence the decisions of others, we construct the decision tilings where the axes reflect the personal preferences of the individuals for making the decision yes or no. These tilings characterize geometrically all the pure and mixed Nash equilibria. We show, in these tilings, that Nash equilibria form degenerated hysteresis with respect to the dynamics, with the property that the pure Nash equilibria are asymptotically stable and the strict mixed equilibria are unstable. These hysteresis can help to explain the sudden appearance of social, political and economic crises. We observe the existence of limit cycles for the dynamics associated to situations where the individuals keep changing their decisions along time, but exhibiting a periodic repetition in their decisions. We introduce the notion of altruist and individualist leaders and study the way that the leader can affect the individuals to make the decision that the leader pretends.

Keywords:

Dichotomous decision model,
pure and mix Nash equilibria.

Mathematics Subject Classification: Primary: 91A35, 91A25; Secondary: 91A80.

Citation:

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