Knowledge that Transforms

Entry and exit literature focuses almost exclusively on firm-level decisions, leaving out an important aspect of firm behavior: whether to introduce new models while the firm produces similar goods and where to locate them in the existing product space, taking into account own models and the possibility of new entry. This paper analyzes model entry and exit decisions in the case of the personal computer market. Differences in new model spatial location between incumbents and entrants are found, while both model overpricing and firm reputation are found to be significant in the probability of model's exit estimation. Copyright 1995 by MIT Press.

Over the last twenty years, many studies have been made of the elasticity of substitution between capital and labor. The reported estimates are highly variable, and reveal an apparent dichotomy between cross-sectional and time-series studies. The former suggest that capital and energy are substitutes while the latter suggest the converse. All these studies reported Allen partial elasticities of substitution. We suggest that the Morishima elasticity may be a more useful measure for the issues of concern to capital energy substitution. We calculate the Morishima elasticities from parameters estimated in a selection of earlier studies and find no excessive variability, nor any evidence of the time-series/cross-section dichotomy. Capital and energy are Morishima substitutes. Copyright 1995 by MIT Press.

We examine evidence on omitted-ability bias in estimates of the economic return to schooling, using proxies for unobserved ability. We consider measurement error in these ability proxies and the potential endogeneity of both experience and schooling, and examine wages at labor market entry and later. Including ability proxies reduces the estimate of the return to schooling, and instrumenting for these proxies reduces the estimated return still further. Instrumenting for schooling leads to considerably higher estimates of the return to schooling, although only for wages at labor market entry. This estimated return generally reverts to being near (although still above) the OLS estimate if we allow experience to be endogenous. In contrast, for observations at least a few years after labor market entry, the evidence indicates that OLS estimates of the return to schooling that ignore omitted ability are, if anything, biased upward rather than downward.

Jene K. Kwon, Hoon Paik, Factor Price Distortions, Resource Allocation, and Growth: A Computable General Equilibrium Analysis, The Review of Economics and Statistics, Vol. 77, No. 4 (Nov., 1995), pp. 664-676

Seung-Rok Park, Jene K. Kwon, Rapid Economic Growth with Increasing Returns to Scale and Little or no Productivity Growth, The Review of Economics and Statistics, Vol. 77, No. 2 (May, 1995), pp. 332-351

Theoretical and empirical studies do not address whether campaign contributions from more than one election cycle are important for congressional voting behavior. Further, they do not address whether campaign contributions from different periods have different effects on legislative voting behavior. This paper analyzes the cumulative effect of campaign contributions over two time periods. Moreover, this paper studies the importance of the timing of contributions for legislative voting behavior. Ten roll call votes on price supports and quotas for various farm commodities in 1981 and 1985 are analyzed. Most of the estimated contribution coefficients are statistically significant. The results show that without campaign contributions farm interest would have lost in five of the seven votes that were won. Moreover, contributions that were given at approximately the same time as the vote have a larger impact on voting behavior than contributions that the legislator received one or two years prior to the vote. Copyright 1995 by MIT Press.

This paper is an empirical study of the value of four file compatibility standards for transferring data in the personal computer software market. The results are that only the LOTUS file compatibility standard is significant in explaining price variations and it is significant in both the spreadsheet and database management system markets. This supports the hypothesis that the personal computer software market exhibits complementary network externalities. Copyright 1995 by MIT Press.

This paper uses micro-level historical data to examine the causes of bank failure.For statecharactered Kansas banks during 19 10-28, time-to-failure is explicitly modeled using a proportional hazards framework.In addition to standard financial ratios, this study includes membership in the voluntary state deposit insurance system and measures of technical efficiency to explain bank failure.The results indicate that deposit insurance system membership increased theprobability of failure and banks which were technically inefficient were more likely to fail than technically efficient banks.

There has been no systematic study of the characteristics of the universities and academic researchers that seem to have contributed most to industrial innovation. Nor do we know how such academic research has been funded. This paper, based on data obtained from sixty-six firms in seven major manufacturing industries and from over two hundred academic researchers, sheds new light on the sources, characteristics, and financing of academic research underlying industrial innovation. The findings should be of interest to economists concerned with technological change and to policymakers attempting to increase the economic payoff from the nation's academic research. Copyright 1995 by MIT Press.

I use household data from El Salvador and Nicaragua to examine the determinants of remittances from international migration. Nearly twice as many households in San Salvador, the capital of El Salvador, receive remittances from relatives abroad than do households in Managua, the capital of Nicaragua, and of those who receive remittances, the average remittance received in San Salvador is over double that in Managua-$119/month to $45/month. I find that the role of observable characteristics in explaining differences in the level of remittances, accounting for the self-selection in the decision to remit, is not large. The difference is explained by differences in the behavioral coefficients and by differences in the self-selection bias of those who remit out of the pool of emigrants between the two countries. Copyright 1995 by MIT Press.