Context-dependent violations of rational choice in honeybees (Apis mellifera) and gray jays (Perisoreus canadensis)

Sharoni Shafir, Tom A. Waite, Brian Smith

Research output: Contribution to journalArticle

173 Citations (Scopus)

Abstract

Contrary to the theory of rational choice, adding an alternative to a set of available options often affects people's judgement of the preexisting options. Here, we show that honeybees (Apis mellifera) and gray jays (Perisoreus canadensis) are also influenced by the addition of an option to a choice set (i.e., by a change in local context). Like humans, our subjects violated basic properties of rational choice. Their relative preference between two original options changed with the introduction of a third, relatively unattractive option. Such context-dependent choice violates the constant-ratio rule. Our subjects increased their relative preference for the more similar of two alternatives, contrary to the similarity hypothesis. The jays also increased their absolute preference for the more similar of two alternatives, in violation of regularity. Thus, the principle of irrelevant alternatives, which assumes that preference between options does not depend on the presence or absence of other options, is violated not only by humans, but also by an invertebrate and a nonhuman vertebrate. These findings contradict the view that nonhuman animals should be immune to such psychological effects and that they should conform with normative accounts, such as rationality or optimal-foraging theory, because their decision-making processes are evolutionarily adaptive. We discuss the potential generality of context-dependent effects and suggest that such effects should be incorporated into decision-making models in behavioral ecology.

Original languageEnglish (US)
Pages (from-to)180-187
Number of pages8
JournalBehavioral Ecology and Sociobiology
Volume51
Issue number2
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

Fingerprint

honeybee
Bees
Apis mellifera
honey bees
Decision Making
decision making
behavioral ecology
decision support systems
Invertebrates
Ecology
Vertebrates
vertebrate
invertebrate
invertebrates
vertebrates
foraging
Psychology
ecology
animal
animals

Keywords

  • Asymmetric dominance
  • Context-dependent preferences
  • Foraging
  • Gray jays
  • Honeybees
  • Rationality
  • Regularity

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology
  • Behavioral Neuroscience

Cite this

Context-dependent violations of rational choice in honeybees (Apis mellifera) and gray jays (Perisoreus canadensis). / Shafir, Sharoni; Waite, Tom A.; Smith, Brian.

In: Behavioral Ecology and Sociobiology, Vol. 51, No. 2, 01.01.2002, p. 180-187.

Research output: Contribution to journalArticle

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