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Related Experiment Videos

Temporal context in concurrent chains: I. Terminal-link duration.

Randolph C Grace1

  • 1University of Canterbury, Department of Psychology, Private Bag 4800, Christchurch, New Zealand. r.grace@psyc.canterbury.ac.nz

Journal of the Experimental Analysis of Behavior
|September 11, 2004
PubMed
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Pigeons showed increased preference for options when terminal-link duration exceeded initial-link duration. Both contextual choice and hyperbolic value-added models explained the observed behavior in concurrent chains.

Area of Science:

  • Behavioral science
  • Animal behavior research
  • Operant conditioning

Background:

  • Concurrent chains procedures are used to study choice behavior.
  • The ratio of time spent in terminal and initial links (Tt/Ti) influences choice.
  • Understanding temporal factors in decision-making is crucial.

Purpose of the Study:

  • To investigate how the ratio of time spent in terminal versus initial links (Tt/Ti) affects choice behavior in pigeons.
  • To evaluate the predictive accuracy of the contextual choice model (CCM) and the hyperbolic value-added model (HVA).
  • To examine the role of temporal context in decision-making.

Main Methods:

  • Two experiments were conducted using pigeons in a three-component concurrent chains procedure.
  • The ratio of average times spent in terminal and initial links (Tt/Ti) was systematically varied.

Related Experiment Videos

  • Behavioral data were analyzed and compared against predictions from CCM and HVA.

    • Main Results:

    • The log initial-link response ratio showed a negatively accelerated function of Tt/Ti.
    • Both CCM and HVA models initially explained approximately 93% of the variance in Experiment 1.
    • Experiment 2 data supported CCM, particularly with a specific temporal context representation, but not HVA.

    Conclusions:

    • Preference increases hyperbolically with Tt/Ti when terminal-link duration is relatively longer.
    • The contextual choice model (CCM) with specific temporal context representations provides a better fit for choice behavior under varying temporal conditions.
    • Findings highlight the importance of temporal factors in understanding choice and decision-making in animal behavior.