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Errors as a Means of Reducing Impulsive Food Choice
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Forced-exposure trials increase suboptimal choice.

Margaret A McDevitt1, Jeffrey M Pisklak2, Roger M Dunn3

  • 1Department of Psychology, McDaniel College, 2 College Hill, Westminster, MD, 21157, USA. mmcdevit@mcdaniel.edu.

Psychonomic Bulletin & Review
|April 5, 2022
PubMed
Summary
This summary is machine-generated.

Forced-exposure (FE) trials significantly influence preference development in pigeons within suboptimal choice tasks. High FE trial exposure can lead to a strong preference for a signaled suboptimal option over an optimal one.

Keywords:
Conditioned reinforcementForced choice, Forced-exposure trialsKeypeckPigeonSuboptimal choice

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Area of Science:

  • Behavioral neuroscience
  • Animal cognition
  • Decision-making research

Background:

  • The suboptimal choice task involves choosing between alternatives with different reward probabilities.
  • Previous research has explored factors influencing choice behavior in such tasks.
  • The role of forced-exposure (FE) trials in shaping preferences was not fully understood.

Purpose of the Study:

  • To investigate the impact of forced-exposure (FE) trials on preference development in pigeons.
  • To compare the effects of varying percentages of FE trials on choice behavior.
  • To determine if FE trials influence the preference for signaled versus unsignaled alternatives.

Main Methods:

  • Pigeons were trained in a suboptimal choice task, choosing between an optimal (50% food) and suboptimal (20% food) alternative.
  • Experiment 1: Groups received 100% FE, 67% FE, or only choice trials.
  • Experiment 2: Groups received 10% or 90% FE trials, with differential signaling of the suboptimal alternative.

Main Results:

  • In Experiment 1, FE trial groups developed a strong preference for the signaled suboptimal alternative, unlike the choice-only group.
  • In Experiment 2, high FE (90%) with signaling led to suboptimal preference, while low FE (10%) maintained optimal preference.
  • The presence and proportion of FE trials significantly modulated preference for alternatives.

Conclusions:

  • Forced-exposure trials can substantially alter preference development in the suboptimal choice task.
  • The signaling of trial outcomes in conjunction with FE trials is critical for establishing preferences.
  • These findings highlight the plasticity of choice behavior and the influence of training history.