Over the last decade, economists have worked hard on the impact of management on productivity. The effectiveness of management, measured by a set of indicators (quality of internal monitoring, setting clear objectives, promoting talent, appropriate incentives, etc.) remains a strength of America. Economists Nicholas Bloom of Stanford, Raffaella Sadun of Harvard and John Van Reenen of the London School of Economics estimate that management accounts for one-third of countries' total factor productivity lag in the United States covering 11,000 enterprises in 34 countries). Technological progress may be slowing down. But there are still huge fields of productivity to cultivate.

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