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Technology and Health News > Monday, May-12-2008

More fair than efficient



The sense of justice and the practical idea of efficiency are encoded in different ways and in different areas of the brain. A study in Science.

Giving a lot to very few, or just a little at everyone? According to a study published on this number of Science, most people follow the second choice, relying on fairness.

The neurophysiologists at the University of Illinois and California Institute of Technology have succeeded, through magnetic resonance imaging, to identify which brain areas are involved in taking such decisions. Scientists have concluded that two different parts of the brain, the insula (a small area of bark MEP to the perception of physiological states) and the putamen (Part nuclei that control voluntary movement), are activated when judging respectively fairness and efficiency. A third area, the caudate nucleus, is the coordination of the first two areas.



Those involved in the research were asked to choose how to distribute a certain number of meals among several children during a computer simulation. At the same time researchers recorded brain activity when they took the final decision: "The subjects were all opposed to injustice, even at the expense of efficiency," said Ming Hsu, co-author of the study. The results are in line with several previous research showing how most people are intolerant of injustice. At least at a neural level.

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