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Is state-dependent valuation more adaptive than simpler rules?

Joseph Y Halpern1, Lior Seeman2

  • 1Cornell University, United States.

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Summary
This summary is machine-generated.

This study proposes a simpler computational limitation mechanism explaining deviations from rational behavior, outperforming natural selection models. This offers a more parsimonious explanation for adaptive animal strategies.

Keywords:
Computational limitationsFinite automatonRational behaviorState-dependent valuation

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Area of Science:

  • Behavioral Ecology
  • Computational Neuroscience
  • Evolutionary Psychology

Background:

  • Systematic deviations from rational behavior are observed in animals.
  • McNamara et al. (2012) proposed a natural selection mechanism to explain these deviations.
  • The adaptive significance of state-dependent valuation in animal decision-making requires further explanation.

Purpose of the Study:

  • To propose a simpler mechanism for explaining systematic deviations from rational behavior.
  • To compare the proposed mechanism with McNamara et al.'s (2012) natural selection model.
  • To evaluate the adaptiveness of state-dependent valuation strategies.

Main Methods:

  • Development of a computational limitations model.
  • Performance comparison of the proposed model against McNamara et al.'s (2012) model in a specified environment.
  • Analysis of the efficiency of state-dependent valuation versus simpler strategies.

Main Results:

  • A simpler mechanism based on computational limitations explains observed behavioral deviations effectively.
  • The proposed mechanism outperforms the natural selection model in the described environment.
  • The study questions the necessity of complex natural selection to explain state-dependent valuation.

Conclusions:

  • Computational limitations offer a more parsimonious explanation for deviations from rational behavior than natural selection.
  • Simpler strategies may be sufficient to explain adaptive animal decision-making.
  • The adaptiveness of state-dependent valuation needs to be justified against simpler computational alternatives.