Fitness landscapes among many options under social influence

Camila C S Caiado, William A. Brock, R. Alexander Bentley*, Michael J. O'Brien

*Corresponding author for this work

Research output: Contribution to journalSpecial issue (Academic Journal)peer-review

8 Citations (Scopus)

Abstract

Cultural learning represents a novel problem in that an optimal decision depends not only on intrinsic utility of the decision/behavior but also on transparency of costs and benefits, the degree of social versus individual learning, and the relative popularity of each possible choice in a population. In terms of a fitness-landscape function, this recursive relationship means that multiple equilibria can exist. Here we use discrete-choice theory to construct a fitness-landscape function for a bi-axial decision-making map that plots the magnitude of social influence in the learning process against the costs and payoffs of decisions. Specifically, we use econometric and statistical methods to estimate not only the fitness function but also movements along the map axes. To search for these equilibria, we employ a hill-climbing algorithm that leads to the expected values of optimal decisions, which we define as peaks on the fitness landscape. We illustrate how estimation of a measure of transparency, a measure of social influence, and the associated fitness landscape can be accomplished using panel data sets.
Original languageEnglish
Pages (from-to)5-16
Number of pages12
JournalJournal of Theoretical Biology
Volume405
Early online date2 Feb 2016
DOIs
Publication statusPublished - 21 Sep 2016

Keywords

  • Discrete choice
  • Fitness landscape
  • Individual learning
  • Payoffs
  • Social learning

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