Traders attributed the decline to a Conference Board survey showing that US consumer confidence, which had been climbing since the 11 September terror attacks, suddenly reversed course in February. The private research group's index, at a five-month high of 97.8 in January, dipped to 94.1 in February, well below economists' expectations. Economists worried that the consumer, a mainstay of the US economy through the manufacturing-led recession, could be drawing back in the face of the Enron accounting scandal, continuing job lay-offs and share investments which have not appreciated in the past two years.