Economists argue about the impact of Chinese imports on America

COMPETITION from Chinese imports may have cost some Americans jobs, but economists have done pretty well out of it. Since 2013 David Autor, David Dorn and Gordon Hanson have published nine separate studies digging into the costs of trade. They have found that, of the fall in manufacturing jobs between 1990 and 2007, one-quarter could be attributed to a surge in imports from China. Other sectors failed to soak up the extra workers. Their research also suggested that the China shock has cut the supply of marriageable men and opened the door of the White House to Donald Trump.

In recent weeks a dispute has erupted over their results. Jonathan Rothwell, an economist at Gallup, a pollster, alleged “serious flaws” in one paper, prompting a fierce eight-page response from the authors, and an acrimonious public tiff.

The row centres on how the effect of the China shock is measured. The trio wanted to isolate the effects of extra Chinese supply, rather than of something happening in America, so they checked that imports of particular Chinese products were surging in other rich countries, too. They then compared places in America…Continue reading

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