Distinct regions of the human brain are activated when people are faced with ambiguous choices versus choices involving only risk, Duke University Medical Center researchers have discovered. The investigators found that they could predict activation of different brain areas, based on how averse study participants were toward either risk or ambiguity.
The finding confirms what economists have long debated -- that different attitudes toward perceived risk and ambiguity in decision-making situations may reflect a basic distinction in brain function, the researchers said.
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