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Related Experiment Video

Updated: Apr 3, 2026

Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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Do intuitive and deliberate judgments rely on two distinct neural systems? A case study in face processing.

Laura F Mega1, Gerd Gigerenzer2, Kirsten G Volz3

  • 1Werner Reichardt Centre for Integrative Neuroscience, Tuebingen Germany ; Graduate School of Neural and Behavioral Sciences | International Max Planck Research School, Tuebingen Germany.

Frontiers in Human Neuroscience
|September 18, 2015
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Summary

Human decision-making may not involve separate intuitive and deliberate systems. New neural evidence suggests a unified model where both processes share rules, challenging dual-systems theory.

Keywords:
deliberationdual-system modelintuitionorbitofrontal cortexunimodel

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Decision-Making Science

Background:

  • Dominant models of human decision-making propose two distinct systems: intuition and deliberation.
  • These dual-systems accounts suggest separate neural underpinnings for intuitive versus deliberate judgments.

Purpose of the Study:

  • To investigate the neural basis of intuitive versus deliberate decision-making.
  • To test the validity of dual-systems models against empirical neural data.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
  • Participants were instructed to make intuitive or deliberate judgments on emotional facial expressions.

Main Results:

  • Analysis revealed common brain networks activated across both intuitive and deliberate decision modes.
  • Differential brain activations were observed based on adherence to the instructed strategy.
  • Results contradict a strict dichotomy between intuitive and deliberate processing.

Conclusions:

  • The findings support a unified model of decision-making, rather than separate intuitive and deliberate systems.
  • Both intuitive and deliberate judgments may utilize shared neural rules.
  • Non-conscious processing characterizes intuitive judgments within this unified framework.