TRIPs, trade and growth: When comparative advantages break down

In this paper we combine a model of Ricardian comparative advantages as in Dornbusch et al. (1977) with Grossman and Helpman's (1991) quality ladder model and derive the consequences of asymmetric IPRs protection for the pattern of trade and the world rate of growth through innovation. Our analysis differs from that already made by Taylor (1994) in that final goods and research technologies do not go exactly along together, so the impossibility of doing licensing under asymmetric protection will here bring forth an infringement of comparative advantages which we call “the invasion effect”.     

A new test for linear inequality constraints when the variance–covariance matrix depends on the unknown parameters

We extend Hansen’s (2005) test to testing hypotheses involving general inequality constraints where the variance–covariance matrix of the functions in the constraints depends on the unknown parameters. The test can be applied to a wider class of problems than Wolak’s (1991).     

The role of simulation methods in Macroeconomics

After reviewing the reasons to use solution methods in macroeconomics, this survey paper discusses different aspects relative to a rigorous use of the numerical output of such methods. Special attention is paid to suggestions that have been made to incorporate parameter uncertainty. Finally, the need to test for usually maintained assumptions, such as rationality of expectations, is emphasized.     

基于索赔分类的车险定价技术的经济分析

从经济效益的视角分析了多元风险车险的定价技术。应用广义线性模型,建立了"索赔频率、索赔类型、索赔额"结构的多元个体损失模型用于车险的纯保费定价。结合中国交强险的实际经营数据,解释了建模时使用的索赔分类技术。相比保险公司传统的定价方法,该技术不仅能实现对不同风险水平的投保人进行更公平的差异化定价,而且可以较好地解决交强险定价中存在的"高价低保"问题。指出保险公司对风险特征更接近的索赔进行分类分析,可更准确地预测投保人的风险水平,从而改进车险定价技术的合理性。     

Trade agreements and international comovements: The case of NAFTA (North American Free Trade Agreement)

Business cycles correlation between Mexico and the US changed from being on a downward sloping path before 1992 to an upward sloping path after that. This paper suggests that the North American Free Trade Agreement could be the explanation. NAFTA generated not only an increase in the volume of trade but also a change in the elasticity of substitution between imports and exports. The paper tests this hypothesis using the neoclassical business cycles model. Although there are still some discrepancies between the theory and data in the degree of correlation, the direction of change in the model corresponds to the one in the data.     

Tariff liberalization and trade specialization: Lessons from India

This paper analyzes the effects of policy reform on the structure of India’s trade in manufactures, from 1990 to 2006. It computes comparative advantage indicators on the basis of disaggregated trade flow data and assesses the effects of trade liberalization on the evolution of India’s pattern of trade specialization. Industries where import tariffs have been reduced the most have experienced the highest increase in specialization. Moreover, trade liberalization has helped India improve its comparative advantage in industries with medium- to high-technology content, as well as in some of the industries enjoying the most robust growth in global demand. Liberalization policies have been instrumental in enhancing the international competitiveness of industries.     

Some recent developments in capital market theory: A survey

This paper surveys some recent developments in the theory of capital markets. Particular emphasis is given to two strands of the literature. The first covers some recent and fundamental extensions to the theory of risk aversion and the demand for risky assets. These papers are concerned with the effect of non-hedgeable background risk on risk attitudes. The important implications for finance are for the size of the risk premium (the equity premium puzzle) and for the demand for and pricing of contingent claims. For example, background risk may help to explain the apparent over-pricing of options on equity indices. The second topic is interest rate term structure models. Stochastic term structure models try to capture the possible future shapes of the term structure of interest rates. This is relevant for the pricing of contingent claims, in particular for the pricing of interest rate derivatives such as American-style swaptions. The paper will survey the most important recent models in the literature, each of which satisfies the fundamental no-arbitrage property. It will discuss the implications of the models for the pricing of both European-style and American-style options.     

Premium auctions and risk preferences

In a premium auction, the seller offers some “payback”, called premium, to a set of high bidders at the end of the auction. This paper investigates how the performance of such premium tactics is related to the bidders? risk preferences. We analyze a two-stage English premium auction model with symmetric interdependent values, in which the bidders may be risk averse or risk preferring. Upon establishing the existence and uniqueness of a symmetric equilibrium, we show that the premium causes the expected revenue to increase in the bidders? risk tolerance. A “net-premium effect” is key to this result.     

Currency crises with the threat of an interest rate defence

While virtually all currency crisis models recognise that the decision to abandon a peg depends on how tenaciously policy makers defend it, this is seldom modelled explicitly. We add the threat of an interest rate defence to the global game model of Morris and Shin (American Economic Review 88, 1998). With an endogenous defence, actions of speculators may become strategic substitutes instead of the usual complements. Nevertheless, our generalised model remains tractable and has a unique threshold equilibrium. It provides additional insights. For instance, the threat of an interest rate defence makes speculation riskier and this may be sufficient to keep speculators out when fundamentals are still relatively strong.     

The trading behavior and price impact of foreign, institutional, individual investors and government: Evidence from Korean equity market

We examine the dynamic relation between stock returns and four types of investment flows using Korean daily data for the period 1998–2010, focusing on the investment/trading behavior of four types of investors – individual, institutional, government, and foreign – and the effect of cross-border investment flows on the Korean equity market. We find that, first, foreigners and institutional investors tend to drive the Korean equity market, and their trades seem to be information-driven, whereas individual investors do not drive the Korean equity market and their trades do not seem to be information-driven. Second, as a result, both foreigners and institutional investors performed well in the sample period, whereas individual investors performed poorly. Third, the four types of investors differ in their trading behavior. In response to U.S. market returns, foreigners and institutional investors tend to take a momentum strategy whereas individual investors and government tend to take a contrarian strategy.