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Dynamic inconsistency in great apes.

Laura Salas-Morellón1,2, Ignacio Palacios-Huerta3,4, Josep Call5,6

  • 1Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain. laurasalasmo@gmail.com.

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|August 5, 2024
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Summary
This summary is machine-generated.

Great apes exhibit dynamic inconsistency in decision-making, often choosing immediate rewards over larger, later ones. However, they show increased patience and consistency when future choices are delayed.

Keywords:
BonobosDelay of gratificationDynamic inconsistencyGorillasOrangutansTime preference

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Area of Science:

  • Behavioral Economics
  • Primatology
  • Cognitive Science

Background:

  • Humans often display dynamic inconsistency, preferring immediate gratification but planning patiently for the future.
  • Understanding if great apes share this trait is crucial for comparative cognition research.

Purpose of the Study:

  • To investigate dynamic inconsistency in great apes (orangutans, bonobos, gorillas).
  • To assess how front-end delays influence intertemporal choices in these species.

Main Methods:

  • A reward-based choice task was employed with great apes.
  • Intertemporal choice scenarios were presented with and without front-end delays.

Main Results:

  • Great apes demonstrated impatient choices and significant individual variability in standard delay tasks.
  • Introducing a front-end delay led to more patient and homogeneous decision-making.

Conclusions:

  • Great apes exhibit dynamic inconsistency, similar to humans.
  • Their future-oriented behavior and patience are more pronounced than previously thought, highlighting the importance of time range in comparative studies.