Lie detectors. That is what Putnam Investments of Boston has brought in to combat fraudulent corporate activity after Enron, WorldCom and all the rest of the accounting scandals. Human lie detectors.

"Outright accounting fraud is inherently tough to catch," Putnam maintains in a capital markets outlook, special report. "We have, however, recently retained consultants from government intelligence agencies to enhance our analysts' interviewing techniques, so that they can more readily identify if a company's managers are not being fully truthful."

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