Whether it's investing in stocks, bungee jumping or public speaking, why do we often plan to take risks but then "chicken out" when the moment of truth arrives?

Professionals often give advice to many anonymous people.

PITTSBURGH, Sept. 22, 2011 /PRNewswire/ -- Professionals often give advice to many anonymous people.

WASHINGTON, April 12, 2011 /PRNewswire-USNewswire/ -- Torture. The United Nations defines it as the "infliction of severe physical or mental pain or suffering." But how severe is severe? That judgment determines whether or not the law classifies an interrogation practice as torture.

Despite heightened awareness about the undue influence that gifts from pharmaceutical companies can have on doctors' prescribing practices, and despite expanding institutional conflict-of-interest policies and state laws targeted at preventing such practices, companies continue to reward doctors for prescribing their drugs with gifts ranging from pens and paper, to free dinners and trips.