We build a model of firm entry and exit and show how returns to scale shape firm survival, the equilibrium productivity and size distributions and firm concentration. High productivity dispersion and high concentration ratios need not reflect inefficiencies when returns to scale are strongly...

Media pundits and some politicians would have us believe that industrial production has been declining in the United States. Some would even say that “we don't make things anymore.” However, the statistics show a different picture. This paper examines the trade statistics for the United...

The economic costs of environmental regulations have been widely debated since the U.S. began to restrict pollution emissions more than four decades ago. Using detailed production data from nearly 1.2 million plant observations drawn from the 1972-1993 Annual Survey of Manufactures, we estimate...

The growing importance of innovation in economic growth has encouraged the development of innovation capabilities in East Asia, within which China, Japan, and Korea are most important in terms of technological capabilities. Using U.S. patent data, we examine how knowledge networks have developed...

I study the effects of basic and applied innovation on a firm's market value and total factor productivity for a panel of U.S. manufacturing firms. Basicness of innovation is measured by the index of generality proposed by Trajtenberg, Henderson and Jaffe (1997), and basic and applied innovation...