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Related Experiment Videos

Time left: linear versus logarithmic subjective time

J Gibbon, R M Church

    Journal of Experimental Psychology. Animal Behavior Processes
    |April 1, 1981
    PubMed
    Summary
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    Rats and pigeons chose between fixed intervals and remaining time, demonstrating preferences based on interval timing. Results support Scalar Timing theory over logarithmic models for time perception.

    Area of Science:

    • Behavioral neuroscience
    • Animal cognition
    • Psychology

    Background:

    • Understanding time perception is crucial for explaining decision-making.
    • Scalar Timing theory proposes linear subjective time and scalar memory variance.
    • Previous research has explored interval timing in various animal models.

    Purpose of the Study:

    • To investigate how animals choose between a standard fixed interval and the remaining time in an elapsing interval.
    • To test predictions of Scalar Timing theory regarding time-based choices.
    • To compare linear and logarithmic models of time perception.

    Main Methods:

    • Experiment 1: Rats chose between a 60-sec comparison fixed interval and a 30-sec standard fixed interval under varying onset times.
    • Experiment 2: Pigeons chose between the remaining time in a comparison interval (C) and a standard fixed interval (S=C/2) in a concurrent-chains paradigm.

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  • Data analysis focused on choice preferences and indifference points.

    • Main Results:

    • Rats preferred the standard interval when presented early and the comparison interval when presented late.
    • Pigeons showed a similar pattern, preferring the standard early and comparison late.
    • Indifference points in pigeons were linearly related to the midpoint of the comparison interval.

    Conclusions:

    • Findings support Scalar Timing theory, indicating subjective time is linear and memory variance is scalar.
    • Results challenge logarithmic models of time perception.
    • Animal choices provide valuable insights into the mechanisms of interval timing.