Asymmetric Loss and the Rationality of Inflation Forecasts: Evidence from South Korea

We examine asymmetry in the loss functions of South Korean consumers' and the Bank of Korea's (BOK) inflation forecasts, and test the rationality of these forecasts under the assumption of a possible asymmetric loss function. Under an asymmetric loss function, we find evidence of asymmetry and support for rationality. We also examine whether the BOK's forecasts incorporate respective forecasts and consensus forecasts efficiently. They broadly use available information efficiently, and their results are robust to inflation‐targeting measures and the recent global financial crisis. However, our results suggest that the information efficiency of the BOK's forecasts for consumers was affected during the period 2007–2008.     

Reflecting inequality of claims in gains and losses

We consider the problem of dividing a resource among a group of agents who have conflicting claims on it. We follow the axiomatic approach and investigate the class of rules satisfying claims-inequality and claims-order preservation in gains and losses. We show that these axioms single out the proportional rule when there are more than three agents. This result confirms the central role of this rule and furthers our understanding of it in claims problems.     

Price and quality competition with quality positions

In this study, we investigate price and quality decisions in a duopoly in the presence of firms’ quality positions , which are determined by the quality levels of their existing core products. Into a standard model of vertical differentiation, we incorporate a “repositioning cost” that is proportional to the quality differences between firms’ current and new products. By varying the levels of quality positions, we analyze the impact of this cost on the equilibrium outcomes. Our results show that the presence of repositioning costs restricts firms’ abilities to improve profitability and differentiate themselves vertically. As a result, a high‐positioned firm does not necessarily have a competitive advantage over a low‐positioned firm, even if the former offers a superior new product in equilibrium. In addition, if a low‐positioned firm is significantly cost‐efficient compared with its rival with regard to repositioning, then that firm can earn higher profits than those of a high‐positioned firm by strategically offering its low‐end product. These results contrast sharply with those based on the standard vertical differentiation model.     

Product design rivalry: multiple‐attributes approach to differentiation

This paper studies product design competition between potentially symmetric firms. We specifically employ the multiple‐attributes approach as the method of product design. While various product‐specific attributes contribute to firms' differentiation, they may cause confusion resulting in consumer dissatisfaction. We show that in the presence of these opposite effects and any setup costs for attributes, the differentiation by multiple attributes is beneficial for firms if, and only if they are moderately competitive. We furthermore show that the socially efficient number of attributes can only be sustained when there are not very many firms and the setup cost is low. Copyright © 2008 John Wiley & Sons, Ltd.     

THE POLITICAL ELEMENT IN THE WORKS OF W. ARTHUR LEWIS: THE 1954 LEWIS MODEL AND AFRICAN DEVELOPMENT

William Arthur Lewis, the Nobel Prize awardee in 1979, was actively involved in politics and policymaking. During World War II, Lewis was appointed to be a young advisor to the British Colonial Office where he came into direct collision with the mainstream laissez‐faire philosophy. After the War, Lewis took the lead in a Fabian conference on colonial question, and his encounter with Kwame Nkrumah eventually compelled him to write an important monograph on the prospect of plural governance in Africa. Through a rereading of Lewis's original texts, it is demonstrated that his emphasis on peasant‐led agricultural development and advocacy of political pluralism were consistently manifested in his academic and nonacademic writings on tropical regions, especially on Africa, contrary to the conventional interpretation of his 1954 model of “Economic Development with Unlimited Supplies of Labour,” which has tended to pin much faith on top‐down industrialization.     

The strategic effect of retailers' in‐store advertising services under product variety competition

We study a retailer service model of in‐store advertising, in which a neutral retailer provides product information to consumers for free but charges manufacturers. Our results show that the retailer's optimal pricing induces the manufacturers to decrease the number of items they offer. Nevertheless, this relaxes the competition between the manufacturers so that they benefit from using the in‐store service, unless the cost of communicating with consumers about the between‐firm products is lower. Furthermore, the service can be made socially beneficial by reducing the inefficiency resulting from an excessive number of items when manufacturers are not well differentiated.     

Energy analysis of Japanese industries : A time series analysis

Characteristics of Japanese industries in the past 15 years have been investigated in terms of energy intensities, or energy directly and indirectly spent for production of a unit output in industries. The methodology of the analysis is similar to that by Herendern, that is an extension of input-output approach, but with various modifications. Data are seven input-output tables, of about 400 x 400 items published by the Japanese government. Changes in energy intensities with time are disaggregated into two factors, 1) changes in direct energy intensities and 2) changes in nonenergy resource use or in the ratios of value added taxes. Observation of these factors in the last 15 years reveals that the latter factor has been highly significant in energy conservation, especially in machine industries, the raw materials of which are mainly iron and steel. It is also observed that conventional energy conservation efforts have scarcely been dependent on nonenergy resource conservation.     

Commercial Policy and Foreign Ownership

Foreign multinationals often not only export but also control local firms through FDI. This paper examines the various effects of trade and industrial policies when exports and FDI coexist. We focus on the case in which a foreign firm has full control of a local firm through partial ownership. Cross‐border ownership on the basis of both financial interests and corporate control leads to horizontal market linkages through which tariffs and production subsidies may harm locally owned firms but benefit the foreign firm. Foreign ownership regulation benefits locally owned firms. These results could have strong policy implications for developing countries that attract an increasing share of world FDI.     

Competition Between Online and Physical Stores: The Implications of Providing Product Information by Pure‐Play E‐tailer

This paper studies the competition between a single pure‐play e‐tailer and a bricks‐and‐mortar retailer, which are originally spatially differentiated. By utilizing information and communication technology, a pure‐play e‐tailer can strategically control consumers' disutility for online purchase. However, such an action may also raise consumers' motivation to visit the physical store, which causes free‐riding by the bricks‐and‐mortar retailer. We show that in the presence of a high free‐riding effect, the e‐tailer should be willing to provide information only about ‘niche’ products, which also results in improving the welfare of all members in the market. Copyright © 2011 John Wiley & Sons, Ltd.