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Neural Correlates of Fairness in Economic Decision-making

This study investigates the neural basis of economic decision-making in the Ultimatum Game and explores the relative contributions of cognitive and emotional processes. It hypothesizes that decisions to accept or reject unfair offers engage neural structures involved in both emotional and cognitive processing.

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Neural Correlates of Fairness in Economic Decision-making

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  1. The Neural Basis of Economic Decision-making in the Ultimatum Game Jonathan D. Cohen lab, Princeton University Deborah Bird November 14, 2008

  2. Questions: What are the neural correlates of fairness? What are the relative contributions of cognitive and emotional processes to economic decision-making? Hypothesis: Decisions to either accept or reject unfair offers will engage neural structures involved in both emotional and cognitive processing

  3. Responder Proposer Possible offers: 5:5 7:3 8:2 9:1

  4. Responder Proposer Possible offers: 5:5…x5 7:3…x2 8:2…x1 9:1…x2

  5. Right Anterior Insula Left Anterior Insula

  6. 9:1 8:2 5:5

  7. Negative emotional states linked to anterior insula activation in neuroimaging studies: Pain and distress: M J Iadarola, 1998 Hunger and thirst: D. Denton, 1999 Autonomic arousal: H D Critchley, 2000 Evaluation of negative emotional states, ie. anger and disgust

  8. Pain: Insula after injection of capsaicin M. J. Iadarola et al. 1998

  9. Anterior Insula activation in neuroimaging studies: Pain and distress: M J Iadarola, 1998 Hunger and thirst: D. Denton, 1999 Autonomic arousal: H D Critchley, 2000 Evaluation of negative emotional states, ie. anger and disgust

  10. Disgust

  11. Disgust Dis gust

  12. Disgust Dis gust Distaste

  13. Anterior Insula and Taste/Distaste: P Rozin, 1993 DM Small, 2000 Penfield and Faulk, 2000

  14. Anterior Insula and Disgust Recognition AJ Calder, 2001

  15. Disgust! Andrew J. Calder; Nature Reviews Neuroscience; 2001

  16. Disgust recognition. Activation of insula (in purple) during recognition of facial expressions showing disgust. Andrew J. Calder; 2001

  17. Conclusion: Emotional states are an important factor informing human decision-making. Competition and interplay between the anterior insula and the DLPFC represent the twin demands of the Ultimatum Game: The emotional resistance to unfairness The cognitive task of accumulating money

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