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Why are elderly duped? UI researchers explain why
Date:8/16/2012

ng deceived." She added the sample size is small and further studies are warranted.

Apart from being damaged, the ventromedial prefrontal cortex begins to deteriorate as people reach age 60 and older, although the onset and the pace of deterioration varies, says Daniel Tranel, neurology and psychology professor at the UI and corresponding author on the paper. He thinks the finding will enable doctors, caregivers, and relatives to be more understanding of decision making by the elderly.

"And maybe protective," Tranel adds. "Instead of saying, 'How would you do something silly and transparently stupid,' people may have a better appreciation of the fact that older people have lost the biological mechanism that allows them to see the disadvantageous nature of their decisions."

The finding corroborates an idea studied by the paper's first author, Erik Asp, who wondered why damage to the prefrontal cortex would impair the ability to doubt but not the initial belief as well. Asp created a model, which he called the False Tagging Theory, to separate the two notions and confirm that doubt is housed in the prefrontal cortex.

"This study is strong empirical evidence suggesting that the False Tagging Theory is correct," says Asp, who earned his doctorate in neuroscience from the UI in May and is now at the University of Chicago.


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Contact: Richard Lewis
richard-c-lewis@uiowa.edu
319-384-0012
University of Iowa
Source:Eurekalert  

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