Dale Jorgenson of Harvard University thinks that American services companies, particularly wholesale and retail traders, have been reaping huge gains over the past decade from information technology.

ECONOMIST: Economics focus

That is a key reason why Dale Jorgenson, an economist at Harvard University, reckons overall productivity growth will average 1.5% in the coming decade, down from 2% in the previous two.

ECONOMIST: Innovation

Yet another new paper, by Dale Jorgenson of Harvard University, one of the world's leading scholars in this field, and Kevin Stiroh of the New York Fed, has also weighed into the debate.

ECONOMIST: Productivity on stilts