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Devaluation and sequential decisions: linking goal-directed and model-based behavior.

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Summary

This study validates two methods for measuring goal-directed behavior in humans. Findings show that both devaluation tasks and sequential decision-making tasks reflect the same underlying construct of goal-directed control.

Keywords:
2-step decision taskcomputational modelingdevaluation taskhabitual and goal-directed behaviormodel-based and model-free learningreinforcement learning

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Area of Science:

  • Experimental Psychology
  • Cognitive Neuroscience
  • Behavioral Economics

Background:

  • Assessing goal-directed vs. habitual control is crucial in experimental psychology.
  • Existing methods include selective devaluation and sequential decision-making tasks, informed by computational theories.
  • The construct validity of these different measurement approaches has not been directly tested.

Purpose of the Study:

  • To directly assess the construct validity of devaluation paradigms and sequential decision-making tasks.
  • To determine if these distinct methods measure the same underlying construct of goal-directed behavior.
  • To provide empirical evidence for a unified framework of behavioral control.

Main Methods:

  • Employed a devaluation paradigm and a sequential decision-making task.
  • Utilized a correlational analysis approach.
  • Recruited a sample of 18 healthy male human participants.

Main Results:

  • A significant positive association was found between model-based choices in sequential decisions and goal-directed behavior following devaluation.
  • This correlation supports the idea that both measurement approaches tap into the same fundamental construct.
  • Results suggest construct validity for both operationalizations of goal-directed behavior.

Conclusions:

  • The findings provide direct empirical support for the construct validity of using both devaluation and sequential decision-making tasks to assess goal-directed behavior.
  • This research bridges different measurement approaches in human experimental psychology.
  • Suggests a single, unified framework underlies these distinct operationalizations of behavioral control.