Revisiting the relationship between suicide and unemployment: Evidence from linear and nonlinear cointegration

This study employs the linear and nonlinear ARDL cointegration methodologies to examine the potential symmetric and asymmetric responses of suicide rates to unemployment rates in the US from 1928 to 2013. Our results suggest that suicide rates are pro-cyclical with respect to the business cycle (measured by changes in the unemployment rate) after extensively controlling for divorce and fertility rates. Unemployment has symmetric long-run effects on the age-adjusted suicide rate and four age-specific (from ages 25–34 to 55–64) suicide rates, while the effect of an economic expansion on suicide rates for those aged over 45 is greater than the effect of an economic recession. These findings imply that the effect of an economic expansion on the decrease of the suicide rate is higher than the effect of an economic recession on the increase of the suicide rate for individuals aged over 45. Therefore, intervention designed to reduce suicidal behaviors should emphasize periods of economic recession more than periods of economic expansion for those of middle age and beyond.     

信息不对称、过度自信与股价变动

信息传导的非同步和投资者情绪变化是股票市场的两个典型特征,前者会引发投资者之间出现信息不对称问题,后者主要体现为投资者过度自信,两者共同作用影响股票价格变动。本文将信息不对称和投资者过度自信情绪置于同一个分析框架,建立两阶段动态序贯定价理论模型研究现实市场上信息传导过程中股价变动的内在机制。结果表明:(1)面临新信息的进入,投资者对股票收益预期的调整与均衡价格之间具有正相关关系;(2)面临有利消息时,过度自信投资者比例越大,股票的均衡价格越高,投资收益将越低;面临不利消息时则相反;(3)随着过度自信投资者比例以及过度自信程度升高,市场风险溢价将下降;(4)投资者群体在信息传导过程中出现分化,对股价变动形成异质信念,未获取信息和获取信息但未出现过度自信的投资者认为股价被高估,获取信息且出现过度自信的投资者认为价格被低估,促使更多的交易,引发市场成交量和股价变动;(5)过度自信投资者比例与过度自信程度提高均会对市场效率产生正向影响,而对市场深度具有负向效应。最后,基于理论结果对非对称性和持续性等典型的市场波动性特征进行解释。     

Asymmetric exchange rate pass-through in an emerging market economy: The case of Mexico

This paper applies a nonlinear Autoregressive Distribute Lag to examine the exchange rate pass-through into consumer price inflation in Mexico. Overall, the evidence confirmed that ignoring the asymmetric (sign) effect of exchange rate movements on inflation may lead to incorrect inferences and policy conclusions. Exchange rate fluctuation is transferred to prices level more during currency depreciation than appreciation. We compare the macroeconomic performances between pre- and post-inflation targeting, and our findings reaffirmed that the pass-through has weakened significantly after launching inflation targeting in 2001. This result implies that low inflation in the sample period examined is good for Mexico because exchange rate pass-through declines after 2001. Consumer prices have become less responsive to exchange rate movements. We further observe a revival (strengthening) of oil price pass-through to domestic inflation in the post- inflation targeting period.     

Asymmetric volatility spillovers between economic policy uncertainty and stock markets: Evidence from China

This study explores the spillovers between economic policy uncertainty (EPU) and stock market realized volatility (RV). The monthly index of Chinese and US EPU and RV are used to analyze the pairwise directional spillovers. We find that RV is a net receiver that is more vulnerable to shocks from U.S. EPU than to shocks from Chinese EPU. We further decompose the RV into good and bad volatility to test the asymmetric spillover effect between the stock market and EPU. The results suggest that EPU has a bigger effect on bad volatility in the stock market throughout most of the sample period. However, we find that good volatility spillovers become larger during periods of stimulated reform, whereas bad volatility spillovers become larger during periods of international disputes. We show that Chinese stock market volatility is sensitive to both U.S. and Chinese EPU and that the spillover is asymmetric in different periods.     

Financial Information Credibility,Legal Environment,and SMEs’ Access to Finance

Abstract

There remains academic debate on the association between credible financial information and small firms’ access to diversified sources of finance. This study investigates the role of credible financial information and its interaction with a country’s legal and regulatory environment on the access of small- and medium-sized enterprises (SMEs) to diversified sources of finance in 129 developing countries. The findings indicate positive impacts of financial information quality and a country’s legal and regulatory environment on small firms’ access to diversified sources of finance. SMEs operating in a weak legal and regulatory environment benefit more from providing credible financial information. The findings are robust after controlling for the endogeneity of firms audit decision using a two-stage instrumental variable method. Our evidence suggests that firms’ credible signaling of the quality of their financial information helps reduce the adverse selection problem for finance suppliers, increasing small firms’ access to diversified sources of finance.     

基于信息不对称理论的IPO抑价实证检验

基于信息不对称的IPO抑价理论一直是学术界和实务界研究的焦点。以2001年1月至2007年12月间在沪深交易所首次公开发行A股的公司作为样本,选取IPO公司的价值评估信息以及衡量公司价值不确定性程度的指标作为变量建立模型,对基于信息不对称的IPO抑价理论进行实证检验。结果显示,用信息不对称理论来解释中国A股市场的IPO抑价现象是有效的。     

A comparison of models for pricing interest rate derivative securities

This paper looks at the different approaches and different models that have been developed to value interest rate-dependent securities, providing a survey of pricing procedures which are based on mathematical models of the term structure. It can be viewed as a reference for the different interest rate models with explicit representations, where they exist, for prices of derivative instruments and an an analysis of their respective advantages and disadvantages.     

声誉机制与棘轮效应对预算松弛影响的研究

本文将单一期间代理模型扩展到多期间代理模型来研究委托一代理关系，从预算棘轮效应和经理人声誉相结合的角度来揭示预算松弛产生的原因，并得出两者的联合作用将显著增加预算松弛产生的可能性，这使我们对影响预算松弛的因素有了进一步的认识，丰富了预算管理理论。     

民营银行并购国有银行的动机、成本与风险探析

当前,在世界范围内特别是在发展中国家,掀起了一股民营银行并购国有银行的浪潮。这种并购容易产生现金流风险、信息不对称风险、政策诱导性风险、管理效率风险、并购失败风险。民营银行应通过以下措施和方法将风险消除,从而实现并购成功:结合银行实际,选用适合自身发展的并购方式;努力消除信息不对称;优化决策程序;妥善处理好与政府的关系。     

Loss aversion and the asymmetric transmission of monetary policy

There is widespread evidence that monetary policy exerts asymmetric effects on output over contractions and expansions in economic activity, while price responses display no sizeable asymmetry. To rationalize these facts we develop a dynamic general equilibrium model where households’ utility depends on consumption deviations from a reference level below which loss aversion is displayed. State-dependent degrees of real rigidity and elasticity of intertemporal substitution in consumption generate competing effects on output and inflation. Contractions face the Central Bank with higher responsiveness of output to interest rate changes, as well as a flatter aggregate supply schedule.