ON THE IMPACT OF PUBLIC DEBT ON ECONOMIC GROWTH: DOES COUNTRY RISK MATTER?

This study examines the nonlinear impacts of four country risk indices on the debt‐growth nexus for 61 countries in a panel data framework. Our results show evidence of the different debt‐growth nexus under the different degrees of country risk. Under a high‐risk environment, a country's economic growth is harmed by raising its public debt. The negative effects public debt has on economic growth become weak under low political and financial‐risk environments, while an increase in public debt could help to stimulate economic growth under low composite and economic risk environments. In addition, the differences of countries' income and debt levels also lead country risks to have different effects on the debt‐growth nexus, suggesting that a country should borrow appropriately based on its current risk environments while improving economic performance. (JEL C33, E02, H63, O43)     

Concealment and verification over environmental regulations: a game-theoretic analysis

We consider a strategic situation in which a firm may conceal the illegal activity of violating environmental regulations and a regulator seeks to verify the illegality to punish the firm. We study two main factors, fines and social monitoring, that influence the firm’s decision in that situation. First, we find all the possible equilibria of our model and examine conditions of those two factors that lead to each equilibrium. Using the equilibrium conditions, we then study the optimal enforcement policies that induce the most socially desirable equilibrium and improve social welfare within each equilibrium. Our main findings are as follows. First, the two factors have a complementary relationship in getting the most desirable equilibrium: Certain high levels of fines and social monitoring are both needed. Second, if making the social monitoring above the certain critical level is impossible, setting the level of the fines as high as possible may be the optimal enforcement policy. Finally, if setting the fines above the certain critical level is not available, either, setting the level of the fines as low as possible might be optimal, and the higher level of the social monitoring does not necessarily bring higher social welfare.     

Intertemporal production and intertemporal substitution in output supply and input demand

This article presents an intertemporal model of production with multiple inputs to investigate substitution opportunities facing firms over time. The firm’s intertemporal profit maximization problem is characterized with the familiar cost function, and various intertemporal substitution elasticities are delineated for output supply and input demand. The absence of intertemporal substitution in production can imply production smoothing, and allowance for intertemporal substitution in labour demand reinforces the prediction of the real business cycle model. For aggregate US manufacturing, we find substantial substitution in output supply and labour demand over time due to intertemporal changes in output price and wage rates.     

Impacts of the End of the Coffee Export Quota System on International‐to‐Retail Price Transmission

We examine the impact of the end of the coffee export quota system (EQS) on international‐to‐retail price transmission in France, Germany and the United States. We take account of the existence of long‐run threshold effects and short‐run price transmission asymmetries (PTAs). We find evidence of threshold effects in both periods (EQS and post‐EQS) in all three countries and the presence of short‐run PTAs during the post‐EQS period in all countries, but not during the EQS period. Our results indicate that the threshold values are smaller in the post‐EQS period, suggesting that retail prices became more responsive to changes in international prices. However, the speed of adjustment towards the long‐run equilibrium decreases during the post‐EQS period in the three countries. In the short run, non‐linear impulse response analyses indicate that a shock in international prices was more persistent during the EQS period than in the post‐EQS period. Moreover, we find evidence of short‐run PTAs in the post‐EQS period, with differences across countries. We find support for the ‘rockets and feathers’ principle in the United States; in contrast, retail prices respond faster when international prices are falling in Germany and France. We explain these differences in terms of market structures.     

The service sector and economic growth: some cross-section evidence

It has often been claimed that a relative expansion of the service sector has a deleterious effect on economic growth. This paper uses cross-section country-level data from three decades –1960s, 1970s and 1980s – to see whether in fact this negative relation is reflected in the data. It is found that the effect is negative or positive depending on how the role of the service sector is measured, but there is a strong case that effect is in fact usually negative.     

Between Collapse and Survival in North Korea: an Economic Assessment of the Dilemma

The current North Korean reform focuses on an open door policy without much import liberalization and on a partial domestic liberalization limited to the consumer sector. This can be considered a variant of the so-called East Asian growth model pursued in South Korea, Taiwan, and China. Although the basic directions of such a model are understandable, the intensity of the reform measures is not radical and strong enough, and the economy has exhausted domestic resources to rely on and is having difficulty in getting access to external resources. Collaboration from the US and South Korea is the most critical elements for the success of North Korean strategy since these will lower political uncertainty and give the regime access to international capital and markets.They may have at most two or three years to rely on and try a big push from the outside, which can hopefully give the system a new momentum for recovery. Otherwise, collapse is certain since they do not have their own ability to revitalize the economy. Success or failure of the next three-year reform will determine the future of North Korea. Failure, including the sudden stop of the reform by internal coup, could lead to collapse of the North Korean regime (hard landing), which will bring in radical reforms either by a new North Korean leadership or by a South Korean takeover. Success could lead to a widening and deepening of reforms to deal with the main body of the domestic economic system (Chinese style soft landing), or alternatively give room for stop-go style (Romania or Cuba style) muddling through.     

Revealed preference and differentiable demand

Summary. We prove that, for finitely many demand observations, the Strong Axiom of Revealed Preference tests not only the existence of a strictly concave, strictly monotone and continuous utility generator, but also one that generates an infinitely differentiable demand function. Our results extend those of previous related results (Matzkin and Richter, 1991; Chiappori and Rochet, 1987), yielding differentiable demand functions but without requiring differentiable utility functions.Received: 1 November 2001, Revised: 5 February 2004, JEL Classification Numbers: D11, D12. Correspondence to: Kam-Chau WongThis is a much revised version of Lee and Wong (2001). We are grateful to the Referee for valuable suggestions. We also thank Professor Marcel K. Richter for his comments.     

Unfolding the impact of leadership and management on sustainability performance: Green and lean practices and guanxi as the dual mediators

This study aims to empirically evaluate the predictors that influence sustainability performance among manufacturing firms. Leadership and management, green and lean practices, and guanxi were examined to determine whether these predictors are directly and/or indirectly affecting sustainability performance; 160 valid responses were collected and partial-least-squares-structural-equation-modeling (PLS-SEM) was used to analyze the data. The results showed that leadership and management positively influenced green and lean practices and green and lean practices positively influenced sustainability performance. Leadership and management also positively influenced guanxi. Interestingly, leadership and management and guanxi do not exert a significant direct influence on sustainability performance. The findings contributed to the development of the resource-based-view theory further by empirically exploring the significance of leadership and management coupled with green and lean practices as competencies and capability to drive sustainability performance. The testing of the dual mediators' effects further added value to this study.     

An alternative bivariate zero-inflated negative binomial regression model using a copula

We propose an alternative bivariate zero-inflated negative binomial (BZINB) regression model based on a copula. The empirical result shows that the proposed model performs better than the existing BZINB models in terms of the maximum log-likelihood and the AIC.