New mobile development platforms have created an enormous opportunity for applications innovation by lowering the costs of R&D and attracting the largest body of potential app demanders ever assembled. This has created an explosion of app suppliers, numerous and diverse. In this early stage of...

This paper evaluates the sources of transitory market power in the market for personal computers (PCs) during the late 1980's. Our analysis is motivated by the coexistence of low entry barriers into the PC industry and high rates of innovative investment by a small number of PC manufacturers. We...

We examine the factors underlying buyer demand for large Information Technology solutions in order to understand the competitive crash in large scale commercial computing. We examine individual buyer data from two periods. The first is in the mid 1980's, late in the period of a mature and stable...

Whole eras of technical progress and economic growth appear to be driven by a few key technologies, which we call General Purpose Technologies (GPT's). Thus the steam engine and the electric motor may have played such a role in the past, whereas semiconductors and computers may be doing as much...

This paper studies weekly output fluctuations from 1972 to 1983 at fifty final assembly plants in the U.S. automobile industry. The study makes use of a new data set that contains detailed information on plant operations. The main findings of the paper are: (1) Even at the simplest fabrication...

The diffusion of new technologies is their adoption by different economic agents at different times. A classical concern in the diffusion of technologies (Griliches 1957) is the importance of raw technical progress versus economic forces. We examine this classical issue in a modern market, web...

<DIV>New goods are at the heart of economic progress. The eleven essays in this volume include historical treatments of new goods and their diffusion; practical exercises in measurement addressed to recent and ongoing innovations; and real-world methods of devising quantitative adjustments for...</div>