A Dynamic Heckscher–Ohlin Model: The Case of Costly Factor Reallocation

The role of the static Heckscher–Ohlin model in providing general equilibrium comparative statics is emphasized. It is shown that (i) market-clearing dynamics can be constructed if and only if the costly reallocation of factors is accommodated, and (ii) the introduction of market-clearing and resource-using dynamics fails to sharpen (and may even blunt) the comparative statics. Thus, a new (non-)Correspondence Principle is derived.     

Giffen behavior independent of the wealth level

We demonstrate that a well-behaved utility function can generate Giffen behavior, where “well-behaved” means that its indifference curves are smooth, convex, and closed in a commodity space; the resulting demand function of each good is differentiable with respect to prices and income. Moreover, we show that Giffen behavior is compatible with any level of utility and an arbitrarily low share of income spent on the inferior good. This contrasts sharply with the common view that the Giffen paradox tends to occur when households’ wealth levels are low. Comments from Murray C. Kemp, Binh Tran-Nam, Ngo Van Long, Masao Oda, Noritsugu Nakanishi, and Chiaki Hara have greatly improved the paper. We have also benefited from discussions with Koichi Hamada, Satya Das, Takashi Kamihigashi, Tomoyuki Kamo, Toru Kikuchi, Katsufumi Fukuda, Yu-chin Chen, Fahad Khalil, Takeshi Nakatani, Kazuo Nishimura, Ken-Ichi Shimomura, and Stephen J. Turnovsky. We thank the anonymous referee for his/her helpful comments. Iwasa would like to acknowledge financial support from Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists. Professor Koji Shimomura passed away on February 24, 2007. This paper was completed after his untimely death.     

Strategic delegation under quality competition

This paper examines strategic manipulations of incentive contracts in a model where firms compete in quality as well as in price. Compensation schemes for managers are based on a linear combination of profits and sales. For a given level of quality, a firm desires to reduce the manager's compensation when product sales increase; this serves as the firm's commitment to raise prices. Nevertheless, in general, a manager has a stronger incentive to produce goods of higher quality if he is compensated according to sales. Therefore, a compensation scheme that penalizes a manager when sales increase may result in products that are inferior to those of its rival. We show that, depending on the nature of quality, a positive weight on sales may be desirable when firms compete in quality and price. Welfare implications are also explored.     

Promoting green buildings: Do Chinese consumers care about green building enhancements?

This paper explores sustainability‐related choices about buildings by analysing how consumers rated the relative importance of various attributes of conventional and green buildings. It also analyses how consumers judge environmental and health‐oriented improvements in green buildings. Unlike previous studies, this research applied conjoint analysis to explore the green building market at the consumer's level by regarding green buildings as nondurable green products and services. We used a survey to gather consumer preferences about several green building hotel models which partly applied green energy, modern wood structures and improved indoor environmental quality (IEQ). In total, 341 consumers participated the survey in two of China's largest cities: Beijing and Shanghai. The results revealed that green energy was the most preferred attribute of green buildings, exerting an even stronger overall effect on consumer choice than price. Afterwards, we identified distinct consumer segments and determined the background characteristics of each segment based on the similarities in the preferences for each attribute. The largest consumer segment, consisting of younger consumers, ranked green energy as the most important criterion. However, an improved indoor environmental quality was generally not highly ranked, and individuals in the consumer segment, which included more older and female consumers, were more likely to reject modern wood structures. The results also revealed that higher‐income individuals were most concerned with price, and consumers with higher levels of education were willing to pay more to support green buildings.     

Cost-effectiveness of mechanical thrombectomy for acute ischemic stroke: an Australian payer perspective

Aims: The goal of this study was to assess the cost-effectiveness of mechanical thrombectomy (MT) for acute ischemic stroke (AIS) from an Australian payer perspective.

Methods: This study used a Markov model that employed a life-time time horizon, modeling patients from symptom onset of stroke until end of life. Clinical efficacy and safety data were taken from an individual patient level data (IPD) meta-analysis of clinical studies. The treatment effect of MT compared to usual care was measured by changes in modified Rankin Score (mRS). Post-treatment mRS scores were used to determine short- and long-term stroke care costs. Treatment costs were modeled, with health state utility values determined by literature review. All analyses were conducted using Microsoft Excel.

Results: In comparison to usual care, MT is associated with higher costs ($10,666 per patient) and additional quality-adjusted life years (QALYs) (0.8281 per patient), resulting in an incremental cost per QALY of $12,880. Sensitivity analyses demonstrated the reliability of the base case results across a range of assumptions. The higher cost associated with MT is, to an extent, offset by the cost savings resulting from lower stroke care costs due to improved patient outcomes. The life-time cost savings in terms of stroke care costs are estimated to be more than $8,000 per patient for patients who had received MT in combination with usual care.

Limitations: Stroke care costs based on patient disability/functional level were not available and were derived. As a consequence, long-term care costs for patients with poorer outcomes may be under-estimated. Patient outcomes at 90 days were extrapolated to a lifetime horizon, but this approach was supported by long-term evidence on stroke survival.

Conclusions: Mechanical thrombectomy is a cost-effective treatment option for AIS, with clinical benefits translating to short- and long-term cost benefits. This analysis supports rapid update of stroke care pathways to incorporate this therapy as a treatment option.     

A test of the Ohlson (1995) model: Empirical evidence from Japan

This paper investigates the validity of the Ohlson [Contemp. Account. Res. 11 (1995) 661] information dynamics (Linear Information Model: LIM) and attempts to improve the LIM. The difficulty concerning the empirical tests of the LIM lies in identifying ν_t, which denotes information other than abnormal earnings. Recent papers, such as those of Myers [Account. Rev. 74 (1999) 1], Hand and Landsman [The pricing of dividends in equity valuation. Working paper, University of North Carolina, 1999], and Barth et al. [Accruals, cash flows, and equity values. Working paper (January) (July), Stanford University, 1999], all try to specify ν_t by using various accounting information. Instead of tackling this difficult task, this paper focuses on serial correlation in the error terms caused by omitting the necessary variable ν_t from the regression equation. The results indicate that adjustment for serial correlation leads to an improvement of the LIM.     

Entry and Merger in Commercial Fishing with Multiple Markets

Received May 23, 2001; revised version received October 22, 2001     

Can a Regional Trade Agreement Benefit a Nonmember Country without Compensating It?

RTAs are generally formed without any tariff concessions or transfers to nonmember countries. Can such an RTA benefit nonmembers' welfare? In a two‐good three‐country competitive equilibrium model in the absence of an entrepôt, an RTA without concessions to a nonmember will hurt nonmembers' welfare when goods are normal. If one of the member countries is an entrepôt, however, it definitely improves nonmembers' welfare. In a three‐good three‐country model, an RTA without concessions damages the nonmember's welfare, provided that all the goods are normal and substitutes, and that initial tariff levels are small.     

Preference revelation games and strong cores of allocation problems with indivisibilities

This note considers the equilibrium outcomes of the preference revelation games in the general model of indivisible good allocation introduced by [Sönmez, T., 1999. Strategy-proofness and essentially single-valued cores. Econometrica 67, 677–689]. We adopt the concepts of coalitional equilibria and cores which are both defined in terms of the weak deviation or blocking by a prescribed class of admissible coalitions. We prove that if the solution which induces preference revelation games is individually rational and Pareto optimal and the class of admissible coalitions is “monotonic,” then the set of coalitional equilibrium outcomes coincides with the core. And we point out that the preceding analysis in the context of marriage problems [Gale, D., Shapley, L., 1962. College admissions and the stability of marriage. American Mathematical Monthly 69, 9–15] is hardly extended to the general model.