Gains to Research in the Presence of Intellectual Property Rights and Research Subsidies

The influx of private investment into crop research, which has accompanied the establishment of intellectual property rights (IPRs) and the introduction of biotechnology, suggests high rates of return. However, the empirical analysis of the canola research sector shows a decline in the total net return to research during a period of increased investment, indicating that net marginal returns to research have been negative. The indication of immiserizing research suggests that the combined effect of IPRs and public incentives has driven the quantity of research beyond the socially optimal level.     

A comparison of the power of some tests for heteroskedasticity in the general linear model

An exact parametric test against heteroskedasticity in the general linear model is proposed. Its power is compared with that of the test proposed by Goldfeld and Quandt and with the BLUS test. Under a variety of circumstances all three tests are found to be of compare power.The proposed test is similar to the BLUS test but is based on easily computed recursive residuals and it is believed that the flexibility and computational simplicity of the new test makes it attractive as a practical procedure.     

DEA of financial statements data: The U.S. computer industry

DEA (data envelopment analysis) is a technique for determining the efficiencyfrontier (the envelope) to the inputs and outputs of a collection of individual corporations or other productive units. DEA is here employed to estimate the intertemporal productive efficiency of U.S. computer manufactures, using financial data brought from earnings statements and balance sheets. The results indicate that a few corporations, including Apple Computer Inc., Compaq Computer Corp., and Seagate Technology were able to stay at the productivity efficiency frontier throughout the time period investigated. But not all successful corporations did; sometimes subefficiency (=disequilibrium) actually goes together with very rapid growth. A new Malmquist type productivity index is calculated for each corporation, measuring shifts of the estimated intertemporal efficiency frontier.     

Do Conglomerate Firms Allocate Resources Inefficiently Across Industries? Theory and Evidence

We develop a profit-maximizing neoclassical model of optimal firm size and growth across different industries based on differences in industry fundamentals and firm productivity. In the model, a conglomerate discount is consistent with profit maximization. The model predicts how conglomerate firms will allocate resources across divisions over the business cycle and how their responses to industry shocks will differ from those of single-segment firms. Using plant level data, we find that growth and investment of conglomerate and single-segment firms is related to fundamental industry factors and individual segment level productivity. The majority of conglomerate firms exhibit growth across industry segments that is consistent with optimal behavior.     

The probability of fixed- and adjustable-rate mortgage termination

This article analyzes mortgage terminations using a national individual loan data set for the 1986–1992 period. The standard option-choice-theoretic framework is supplemented with variables to proxy for non-option-related termination determinants. Separate multinominal logit models are estimated for three mortgage types: 30-year FRMs, 15-year FRMs, and 30-year ARMs. The results indicate substantial differences in the response of the mortgage types to variables included in the model. FRM15 prepayments are the most responsive to prepayment option values; FRM30 prepayments are less responsive to option values and are dirven by local area housing market and economic conditions; ARM prepayment rates are higher but defeult rates are lower relative to the FRMs. A noteworthy finding is that teaser discounts reduce the likelihood of ARM defaults.     

Laboratory Behavior in Spot and Forward Auction Markets

Auctions that require advance production increase seller costs because inventories must be held. This cost does not exist in production-to-demand markets for which production follows trading, and sales exactly match quantities produced. Data from laboratory computerized double auction markets show that advance-production prices are significantly higher and quantities traded are significantly lower than they are in production-to-demand auctions. Price convergence patterns show advance-production sellers moving toward 9% higher prices and 22% greater earnings.     

What effect does the size of the state-owned sector have on regional growth in China?

This paper examines the effects state-owned enterprises (SOEs) have on China's economic growth. We present a simple and intuitive model of the political process, which predicts a larger state-owned sector will lead to lower growth rates. We then estimate regressions with various measures of and proxies for real output growth using a variety of other factors, including measures of the size of the state-owned sector, as regressors.We find a robust negative relation between the size of state-owned enterprises and the provincial growth rate. The estimates indicate that a decrease in the SOE share of industrial production by 10 percentage points increases real GDP growth the following year by between 0.7% and 1.2%. The average impact of a reduction in the SOE share in employment by 10 percentage points is between 1.6% and 2.3%.