The US consumer is not the only one feeling down and out. Since the start of the year, higher food and energy prices have undermined consumer confidence not only in Detroit but also in Dusseldorf, Delhi and Dalian. The upshot: a global slump in personal spending is unfolding, portending rockier times for the global economy and world financial markets.

At best, global private consumption expenditures – roughly $32,000bn in nominal dollars in 2007 – are expected to rise by 2-4 per cent this year. That compares with an 11 per cent jump in 2007, and contrasts sharply with the boom in personal spending this decade.