Presidential Address: Welfare Economics Beyond Welfarist-Consequentialism

Capitalizing on the recent work in social choice theory, I re-examine the foundations of post-Pigovian welfare economics and social choice theory. The structure of the "old" and "new" welfare economics is critically scrutinized, and the culprits of the poverty of welfare economics as well as of Arrovian social choice theory are boiled down to their common informational basis, referred to as welfarist-consequentialism . Alternative avenues that may be taken in an attempt to escape from the poverty of normative economics are identified and examined. These are focused on interpersonal comparisons of welfare levels, opportunity preferences and the procedural fairness of social choice.
JEL Classification Numbers: B21, D63, D71.     

Extended social ordering functions for rationalizing fair allocation rules as game forms in the sense of Rawls and Sen

We examine the possibility of constructing social ordering functions, each of which associates a social ordering over the feasible pairs of allocations and allocation rules with each simple production economy. Three axioms on the admissible class of social ordering functions are introduced, which embody the values of procedural fairness, non-welfaristic egalitarianism, and welfaristic consequentialism, respectively. The logical compatibility of these axioms and their lexicographic combinations subject to constraints are examined. Two social ordering functions that give priority to procedural values rather than to consequential values are identified. These two can uniformly rationalize a nice allocation rule in terms of the values of procedural fairness, non-welfaristic egalitarianism, and Pareto efficiency.     

Retail power market competition with endogenous entry decision—An auction data analysis

Deregulation in the electric power industry has been aimed at promoting competition and thereby enhancing the industry’s efficiency. We use the auction data of public power procurements to study the impact of the reform on the retail power market in Japan. We quantify this impact by measuring a decline in power charges, controlling for the endogeneity bias caused by the entrants’ bid-submission decisions. Our results suggest that power charges would decline by about 0.48 yen/kW h on average when two or more providers bid at an auction.     

Foreign Exchange Intervention and Monetary Policy: A Tale of Two Agencies with Conflicting Objectives

In several industrial countries, the government is responsible for foreign exchange intervention while the central bank is given operational independence in conducting domestic monetary policy. We model the interaction between the two agencies when their views differ and generate empirical implications using lattice‐theoretic techniques. Japanese data from 2001–2004 support the model's predictions with respect to central bank behavior. The evidence is less conclusive as to whether the massive intervention of 2001–2004 by the Ministry of Finance caused the Bank of Japan to raise the monetary target.     

The Boosting Effect of E-WOM on Macro-level Consumption: A Cross-Industry Empirical Analysis in Japan

In this study, we carry out an empirical analysis on how electronic word-of-mouth (hereinafter “e-WOM”) marketing on e-WOM websites and electronic-commerce websites on the Internet boosts consumption on a macro-level. In our analysis, we conduct a model analysis of consumer behavior using data composed of more than 30,000 questionnaire surveys and quantitatively find the elasticity coefficient of the boost to consumption by performing a two-step GMM (generalized method of moments), which uses instrumental variables. The results of the analysis show e-WOM significantly increased expenditures in six fields: computers, electrical appliances, etc.; music; hobbies; clothing, accessories, etc.; beauty products, etc.; and goods for everyday life, etc. Furthermore, there was no field that had a significantly negative value. These results showed that, in the majority of the target fields, e-WOM had not only the effect of winning customers from the competition, but also the effect of boosting consumption on a macro-level. In addition, even from people’s subjective evaluations, there were many in all the generational groups who said that e-WOM boosted expenditures.     

Globalization of Information Services and the Industrial Structure of the Japanese Economy

Since the late 1990s, ICT has rebuilt organizational networks by connecting value chains and providing communication networks. This made certain types of services tradable, including information services. This change raised the public concern in terms of the effect on employment and innovation capacity in developed economies. The fragmentation of the production network of information services has been led by US firms, but is spreading to East Asia, typically in outsourcing from Japan to China, India and the ASEAN countries. This study empirically assesses the effect of offshore outsourcing on employment in Japan, specifying trading partners. The results show that information services outsourcing affects employment in the manufacturing sector in Japan, but the effect is different depending on trading partners. This study discusses the implications from the viewpoint of industry policy, relating the results to outsourced business processes.     

Semi-Static Hedging Based on a Generalized Reflection Principle on a Multi Dimensional Brownian Motion

On a multi-assets Black-Scholes economy, we introduce a class of barrier options, where the knock-out boundary is a cone. In this model we apply a generalized reflection principle in a context of the finite reflection group acting on a Euclidean space to give a valuation formula and the semi-static hedge. The result is a multi-dimensional generalization of the put-call symmetry by Bowie and Carr (Risk (7):45–49, 1994), Carr and Chou (Risk 10(9):139–145, 1997), etc. The important implication of our result is that with a given volatility matrix structure of the multi-assets, one can design a multi-barrier option and a system of plain options, with the latter the former is statically hedged.     

Slow price reactions to analysts’ recommendation revisions

This study explores the reasons for the slow price reactions to analysts’ recommendation revisions. We predict that analysts’ recommendation revisions contain earnings-related information that is not incorporated in analysts’ earnings forecasts and that the slow price reaction is attributable to a gradual incorporation of this earnings-related information into stock prices. We find that, consistent with our prediction, stocks with recommendation upgrades subsequently experience more upward earnings forecast revisions than stocks with recommendation downgrades, and that the differences in subsequent stock returns between upgraded and downgraded stocks is attributable to differences between subsequent earnings forecast (especially, FY2 earnings forecast) revisions.