Boekbesprekingen

Ohne Zusammenfassung     

The Impact of Public Policies on Innovation and Imitation: The Role of R&D Technology in Growth Models

It has been shown under the assumption of linear R&D technology that a government subsidy to imitative (innovative) R&D decreases (increases) imitative effort but increases (decreases) innovative effort, and that strengthening the enforcement of patent laws leads to a decrease in innovative R&D but to an increase in imitative R&D. By replacing the linear R&D technology with a sufficiently convex R&D technology, we have shown that the counter-intuitive results are reversed. In the case of linear R&D technology, the socially optimal R&D policies and activities are indeterminate, but with convex R&D technology, optimal innovation and imitation subsidies would induce the market to generate socially 'balanced' innovative and imitative activities.     

HEALTH CARE IN THE UNITED STATES: WHY IS SUPPLY SO PRICE INSENSITIVE?

Health spending as a percentage of gross domestic product in the U.S. economy is growing, from 5% in 1960 to about 16% in the current period, and it is predicted to grow to as much as 30% in 2050. Then why is the supply of health care in the United States so insensitive to steeply rising prices? This paper conducts an econometric study to show that high health‐care costs have an adverse impact on labor productivity, causing a negative production externality in all industries. So, can the rising cost of health‐care affect the U.S. comparative advantage? The paper seeks answers to these questions in a general equilibrium model and finds that the labor productivity shock is responsible for the sluggish or declining supply of health care. Consumers are able to afford less health care due to a possible decline in real wages. U.S. comparative advantage becomes a nonissue, provided that the equilibrium is stable in spite of a negatively sloped health‐care supply curve. Negative externality, leading to market failure, may be addressed in two alternative ways. (JEL F11, I11, I12, I18)     

China’s Experience with Indexed Government Bonds, 1988–1996: How Credible Was the People’s Republic’s Anti-Inflationary Policy?

The People's Republic of China introduced indexed government bonds in the face of the inflation panic of 1988–89 and reintroduced them when inflation surged upward again in 1993. Measures of inflation expectations—as derived from the trading prices of these indexed bonds—suggest that the government gained credibility from its ability to contain inflation in 1989. But the government's failure to quickly halt the 1993–95 inflation led, by late 1994, to soaring inflation expectations and, ultimately, a heavy financial penalty for the government as the 1992 and 1993 bond issues matured while inflation was still high.     

论科学发展观视野下权力制约的创新

科学发展观视野下权力制约的创新,既是对人类权力制约文明成果的历史继承,更是人类权力制约文明成果的创新发展,彰显了中国化的马克思主义权力制约创新的本质特征.深刻理解和把握科学发展观视野下权力制约的创新,对于"确保权力的正确行使,让权力在阳光下运行","保证人民赋予的权力始终用来为人民谋利益",对于推进中国特色的社会主义民主政治的发展进程,具有极其重要的现实意义.     

Book reviews

Ohne Zusammenfassung     

Employment and child-care choices in Canada and the United States

In this paper we examine employment and child-care choices of two-parent families with young children in the United States and Canada, using a pooled data set based on recent national surveys in each country. We find that the employment and child-care choices of Canadian families are similar to those of U.S. families. Estimates of a model of employment and child-care choices indicate significant effects of child-care subsidies, child-care prices, and wage rates on employment and child-care choices. However, none of these factors helps to explain the differences in employment and child-care choices between the two countries.
Ce mémoire examine le choix de l'emploi et du soin des enfants dans les familles où il y deux parents aux Etats-Unis et au Canada en utilisant des données d'études récentes dans les deux pays. Il appert que les choix des familles canadiennes sont semblables à ceux des familles américaines. Les calibrations d'un modèle de ces choix montrent les effets significatifs des subventions au soin des enfants, du prix des soins des enfants, et des taux de salaires sur ces choix. Cependant, aucun de ces facteurs n'explique les diffrences dans les patterns de choix entre les deux pays.     

Estimating Income and Price Elasticities of Trade in a Cointegration Framework

This paper presents further evidence on the empirical regularity known as the "45-degree rule." Income and price elasticities of trade are estimated for 21 countries in a cointegration framework. More specifically, the autoregressive distributed lag (ARDL) modeling approach and the DOLS procedure are adopted to estimate the long-run structure. The empirical results confirm the existence of a systematic relationship between growth rates and income elasticity estimates: faster growing economies have high income elasticities of demand for their exports but lower import elasticities, which implies that faster growth can be observed without any marked secular trend in real exchange rates.     

On a Mean—Generalized Semivariance Approach to Determining the Hedge Ratio

A new mean‐risk hedge ratio based on the concept of generalized semivariance (GSV) is proposed. The proposed mean‐GSV (M‐GSV) hedge ratio is consistent with the GSV‐based risk–return model developed by Fishburn (1977), Bawa (1975, 1978), and Harlow and Rao (1989). The M‐GSV hedge ratio can also be considered an extension of the GSV‐minimizing hedge ratio considered by De Jong, De Roon, and Veld (1997) and Lien and Tse (1998, 2000). The M‐GSV hedge ratio is estimated for Standard & Poor's (S&P) 500 futures and compared to six other widely used hedge ratios. Because all the hedge ratios considered are known to converge to the minimum‐variance (Johnson) hedge ratio under joint normality and martingale conditions, tests for normality and martingale conditions are carried out. The empirical results indicate that the joint normality and martingale hypotheses do not hold for the S&P 500 futures. The M‐GSV hedge ratio varies less than the GSV hedge ratio for low and relevant levels of risk aversion. Furthermore, the M‐GSV hedge ratio converges to a value different from the values of the other hedge ratios for higher values of risk aversion. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21: 581–598, 2001     

Discrimination and Disidentification: The Fair-Start Defense of Affirmative Action

The Fair-Start Defense justifies affirmative action preferences as a response to harms caused by race- and sex-based discrimination. Rather than base a justification for preferences on the traditional appeal to self-esteem, I argue they are justified in virtue of the effects institutional discrimination has on the goals and aspirations of its victims. In particular, I argue that institutional discrimination puts women and blacks at an unfair competitive disadvantage by causing academic disidentification. Affirmative action is justified as a means of negating this unfair disadvantage.