Susan Helper

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This paper starts from the observation that firms are increasingly engaging in collaborations with their suppliers, even as they are reducing the extent to which they are vertically integrated with those suppliers. This fact seems incompatible with traditional theories of the firm, which argue that integration is necessary to avoid the potential for hold-up(More)
for their insightful comments and suggestions. We are also deeply indebted to the many administrators, scientists, managers, and entrepreneurs who agreed to be interviewed. ABSTRACT We present quantitative and qualitative evidence on the productivity of university technology transfer offices (TTOs). Our empirical results suggest that TTO activity is(More)
In 1980 Japan surpassed the United States as the world's leading producer of automobiles. Not only does Japan now produce the greatest number of cars of any country in the world [9], it introduces new models with the greatest frequency [7], makes them in factories with the highest productivity [19], and dominates surveys of customer satisfaction and(More)
We use survey data and field research to investigate the effects of employee involvement practices on outcomes for blue-collar workers in the auto supply industry. We find these practices raise wages by 3-5%. The causal mechanism linking involvement and wages appears to be most consistent with efficiency wage theories, and least consistent with compensating(More)
The literature on agglomeration economies suggests that, in addition to firmspecific attributes, the local geographic context conditions the expected profitability of technology adoption. All theories of technology diffusion assume that inter-firm learning is the outcome of contact with prior adopters. Yet, with few exceptions, the attributes of location(More)
Alfred Chandler attributed the rise of the vertically integrated corporation in the twentieth century to improvements in transportation and communication. In contrast, many have argued that further advances in transportation and communication have made vertical integration obsolete in recent years, replacing it with modularity, outsourcing, and networking.(More)
Susan Helper John Paul MacDuffie Associate Professor of Economics Associate Professor of Management Weatherhead School of Business Wharton School Case-Western Reserve University University of Pennsylvania 311 Wickenden Hall 2105 Steinberg-Dietrich Hall 10900 Euclid Ave 3620 Locust Walk Cleveland, Ohio 44106 Philadelphia, PA 19104-6370 Tel: 1-216-368-5541(More)
Studies of public-private and foreign-domestic wage differentials face difficulties distinguishing ownership effects from correlated characteristics of workers and firms. This paper estimates these ownership differentials using linked employer-employee data (LEED) from Hungary containing 1.35mln worker-year observations for 21,238 firms from 1986 to 2003.(More)