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Last updated on April 16, 2014 at 21:24 EDT

Oddities News Archive - August 31, 2005

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The ups and downs of the stock market reflect investors' balance between greed and fear, goes an old saying. Until now, though, economists have not had a way to incorporate such emotions into their models of investors' strategies. However, in the September 1, 2005, issue of Neuron, Camelia M. Kuhnen and Brian Knutson of Stanford University report the identification of two key brain regions activated before people make risk-seeking versus risk-aversion investment mistakes.