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Politics is littered with accusations that the truth is not being strictly followed. But where does the line fall between the sincere desire to believe something and self-deception? Moral psychologist Dr Shaul Shalvi of the University of Amsterdam and Dr Maurice Schweitzer of the University of Pennsylavania debated moral decision-making in the process that led to the war in Iraq. (Photo: Traditional wooden Pinocchio dolls; Credit: Thinkstock)