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Reliance on Episodic vs. Procedural Systems in Decision-Making Depends on Individual Differences in Their Relative

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Individual decision-making strategies are adaptively shaped by brain connectivity. Stronger memory region connectivity favors memory-based choices, while sensorimotor region connectivity favors reinforcement learning. This highlights neural costs influencing adaptive choices.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Decision Science

Background:

  • Experiential decision-making is understood through memory-based or reinforcement-based processes.
  • Individual strategy preferences can exist even when outcomes are equivalent.

Approach:

  • Used computational cognitive models to determine individual strategy usage.
  • Correlated strategy preference with resting-state brain connectivity patterns.

Key Points:

  • Individuals with stronger memory region connectivity preferred memory-based strategies.
  • Individuals with stronger sensorimotor/habit-formation region connectivity preferred reinforcement-based strategies.
  • These preferences were observed even when strategies offered equivalent expected payoffs.

Conclusions:

  • Individual differences in brain connectivity shape decision-making strategy preferences.
  • Decision-making is adaptive and sensitive to the neural costs of different strategies.