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Articles 31 - 60 of 88
Full-Text Articles in Social and Behavioral Sciences
Protection For Sale Under Monopolistic Competition: An Empirical Investigation, Pao Li Chang
Protection For Sale Under Monopolistic Competition: An Empirical Investigation, Pao Li Chang
Research Collection School Of Economics
This paper proposes a general empirical framework to estimate the protection-for-sale model, where the protection regime shifts according to a sector's market structure (perfectly or monop-olistically competitive). We base the protection structure on Grossman and Helpman (1994) for the subset of perfectly competitive sectors and on Chang (2005) for the subset of monop- olistically competitive sectors. The two protection regimes are simultaneously estimated with joint constraints. The results of the J-test consistently reject the homogeneous (perfect compe- tition) protection-for-sale model often adopted in previous literature and suggest a direction of improvement toward the proposed heterogeneous protection structure model.
A Welfare Analysis Of Capital Account Liberalization, Jürgen Von Hagen, Haiping Zhang
A Welfare Analysis Of Capital Account Liberalization, Jürgen Von Hagen, Haiping Zhang
Research Collection School Of Economics
We develop a model of a small open economy with credit market frictions to analyze the consequences of capital account liberalization. We show that nancial opening facilitates the in ows of cheap foreign funds and improves production e ciency. Reforms increasing labor market exibility can further improve such e ciency gains. However, capital account liberalization also has important distributional consequences. Speci cally, it may be impossible to use public transfers to fully compensate the loss of those negatively a ected by capital account liberalization. This explains why nancial opening often meets erce opposition even though it leads to e ciency …
To Trust Or To Monitor: A Dynamic Analysis, Fali Huang
To Trust Or To Monitor: A Dynamic Analysis, Fali Huang
Research Collection School Of Economics
In a principal-agent framework, principals can mitigate moral hazard problems not only through extrinsic incentives such as monitoring, but also through agents’ intrinsic trustworthiness. Their relative usage, however, changes over time and varies across societies. This paper attempts to explain this phenomenon by endogenizing agent trustworthiness as a response to potential returns. When monitoring becomes relatively cheaper over time, agents acquire lower trustworthiness, which may actually drive up the overall governance cost in society. Across societies, those giving employees lower weights in choosing governance methods tend to have higher monitoring intensities and lower trust. These results are consistent with the …
Does Tv Affect Child Cognitive Development?, Fali Huang, Myoung-Jae Lee
Does Tv Affect Child Cognitive Development?, Fali Huang, Myoung-Jae Lee
Research Collection School Of Economics
We investigate whether TV watching at ages 6-7 and 8-9 affects cognitive development measured by math and reading scores at ages 8-9 using a rich childhood longitudinal sample from NLSY79. Dynamic panel data models are estimated to handle the unobserved child-specific factor, endogeneity of TV watching, and dynamic nature of the causal relation. A special emphasis is put on the last aspect where TV watching affects cognitive development which in turn affects the future TV watching. When this feedback occurs, it is not straightforward to identify and estimate the TV effect. We adopt estimation methods available in the biostatistics literature …
The Coevolution Of Economic And Political Development, Fali Huang
The Coevolution Of Economic And Political Development, Fali Huang
Research Collection School Of Economics
This paper establishes a simple model of long run economic and political development, which is driven by the inherent technical features of di¤erent production factors and the political con‡icts among factor owners on how to divide the outputs. The main production factor in economy evolves from land to physical capital and then to human capital, which enables their respective owners (landlords, capitalists, and workers) to gain political power in the same sequence, shaping the political development path from monarchy to oligarchy and …nally to democracy with full su¤rage. When it is too costly for any group of factor owners to …
Regression With Slowly Varying Regressors And Nonlinear Trends, Peter C. B. Phillips
Regression With Slowly Varying Regressors And Nonlinear Trends, Peter C. B. Phillips
Research Collection School Of Economics
Slowly varying (SV) regressors arise commonly in empirical econometric work, particularly in the form of semilogarithmic regression and log periodogram regression. These regressors are asymptotically collinear. Usual regression formulas for asymptotic standard errors are shown to remain valid, but rates of convergence are affected and the limit distribution of the regression coefficients is shown to be one dimensional. Some asymptotic representations of partial sums of SV functions and central limit theorems with SV weights are given that assist in the development of a regression theory. Multivariate regression and polynomial regression with SV functions are considered and shown to be equivalent, …
On The Segmentation Of Markets, Nicolas L. Jacquet, Serene Tan
On The Segmentation Of Markets, Nicolas L. Jacquet, Serene Tan
Research Collection School Of Economics
This paper endogenizes the market structure of an economy with heterogeneous agents who want to form bilateral matches in the presence of search frictions and when utility is nontransferable. There exist infinitely many marketplaces, and each agent chooses which marketplace to be in: agents get to choose not only whom to match with but also whom they meet with. Perfect segmentation is obtained in equilibrium, where agents match with the first person they meet. All equilibria have the same matching pattern. Although perfect assortative matching is not obtained in equilibrium, the degree of assortativeness is greater than in standard models.
Instrumental Variable Quantile Estimation Of Spatial Autoregressive Models, Zhenlin Yang
Instrumental Variable Quantile Estimation Of Spatial Autoregressive Models, Zhenlin Yang
Research Collection School Of Economics
We propose an instrumental variable quantile regression (IVQR) estimator for spatial autoregressive (SAR) models. Like the GMM estimators of Lin and Lee (2006) and Kelejian and Prucha (2006), the IVQR estimator is robust against heteroscedasticity. Unlike the GMM estimators, the IVQR estimator is also robust against outliers and requires weaker moment conditions. More importantly, it allows us to characterize the heterogeneous impact of variables on different points (quantiles) of a response distribution. We derive the limiting distribution of the new estimator. Simulation results show that the new estimator performs well in finite samples at various quantile points. In the special …
A Corrected Plug-In Method For Quantile Interval Construction Through A Transformed Regression, Zhenlin Yang, Yiu Kuen Tse
A Corrected Plug-In Method For Quantile Interval Construction Through A Transformed Regression, Zhenlin Yang, Yiu Kuen Tse
Research Collection School Of Economics
We propose a corrected plug-in method for constructing confidence intervals of the conditional quantiles of an original response variable through a transformed regression with heteroscedastic errors. The interval is easy to compute. Factors affecting the magnitude of the correction are examined analytically through the special case of Box-Cox regression. Monte Carlo simulations show that the new method works well in general and is superior over the commonly used delta method and the quantile regression method. An empirical application is presented. [PUBLICATION ABSTRACT]
Direction-Of-Change Forecasts For Asian Equity Markets Based On Conditional Variance, Skewness And Kurtosis Dynamics: International Evidence, Peter F. Christoffersen, Francis X. Diebold, Robert S. Mariano, Anthony S. Tay, Yiu Kuen Tse
Direction-Of-Change Forecasts For Asian Equity Markets Based On Conditional Variance, Skewness And Kurtosis Dynamics: International Evidence, Peter F. Christoffersen, Francis X. Diebold, Robert S. Mariano, Anthony S. Tay, Yiu Kuen Tse
Research Collection School Of Economics
Recent theoretical work has revealed a direct connection between asset return volatility forecastability and asset return sign forecastability. This suggests that the pervasive volatility forecastability in equity returns could, via induced sign forecastability, be used to produce direction-of change forecasts useful for market timing. We attempt to do so in an international sample of developed equity markets, with some success, as assessed by formal probability forecast scoring rules such as the Brier score. An important ingredient is our conditioning not only on conditional mean and variance information, but also conditional skewness and kurtosis information, when forming direction-of-change forecasts.
Indirect Inference For Dynamic Panel Models, Jun Yu
Indirect Inference For Dynamic Panel Models, Jun Yu
Research Collection School Of Economics
It is well-known that maximum likelihood (ML) estimation of the autoregressive parameter of a dynamic panel data model with fixed effects is inconsistent under fixed time series sample size (T) and large cross section sample size (N) asymptotics. The estimation bias is particularly relevant in practical applications when T is small and the autoregressive parameter is close to unity. The present paper proposes a general, computationally inexpensive method of bias reduction that is based on indirect inference (Gouriéroux et al., 1993), shows unbiasedness and analyzes efficiency. The method is implemented in a simple linear dynamic panel model, but has wider …
The Evolution And Utilization Of The Gatt/Wto Dispute Settlement Mechanism, Pao-Li Chang
The Evolution And Utilization Of The Gatt/Wto Dispute Settlement Mechanism, Pao-Li Chang
Research Collection School Of Economics
This paper provides a theoretical framework of dispute settlement to explain the surge in blocking incidence of GATT panel reports during the 1980s and the variations in withdrawn incidence versus total disputes across different decades of the GATT regime. The study first suggests the role of the degree of legal controversy over a panel ruling in determining countries' incentives to block (appeal) a panel report under the GATT (WTO) regime. The study then analyzes the effects of political power on countries' incentives to use, and their interactions in using, the dispute settlement mechanism, when two-sided asymmetric information exists regarding panel …
Financial Variables As Predictors Of Real Output Growth, Anthony S. Tay
Financial Variables As Predictors Of Real Output Growth, Anthony S. Tay
Research Collection School Of Economics
We investigate two methods for using daily stock returns to forecast, and update forecasts of, quarterly real output growth. Both methods aggregate daily returns in some manner to form a single stock market variable. We consider (i) augmenting the quarterly AR(1) model for real output growth with daily returns using a nonparametric Mixed Data Sampling (MIDAS) setting, and (ii) augmenting the quarterly AR(1) model with the most recent r -day returns as an additional predictor. We discover that adding low frequency stock returns (up to annual returns, depending on forecast horizon) to a quarterly AR(1) model improves forecasts of output …
Estimation Of Impulse Response Functions Using Long Autoregression, Pao Li Chang, Shinichi Sakata
Estimation Of Impulse Response Functions Using Long Autoregression, Pao Li Chang, Shinichi Sakata
Research Collection School Of Economics
This article proposes an alternative methodology to estimate impulse response functions without imposing parametric restrictions. The impulse responses are estimated by regressing the series of interest on estimated innovations, which are the residuals obtained from a prior-stage ‘long autoregression.’ We establish the consistency and asymptotic normality of the proposed estimator. The proposed estimator is closely related to the estimator of Jordà (2005, American Economic Review 95, 161–182). Our large sample analysis, as a byproduct, establishes the asymptotic equivalence between Jordà's estimator and our estimator, and provides justifications for the statistical inference method used in Jordà (2005).
How Much Should Foreign Talent Be Paid?, Manoj Thulasidas
How Much Should Foreign Talent Be Paid?, Manoj Thulasidas
Research Collection School Of Computing and Information Systems
Singapore needs foreign talent — and there’s no need to feel bad about it. It is a statistical fact of life. For every top Singaporean in any field — be it science, medicine, finance, sports or whatever — we will find about 500 professionals of equal calibre in China and India. Not because we are 500 times less talented, just that they have 500 times more people.
Characterizing Exchange Rate Policy In East Asia: A Reconsideration, Hwee Kwan Chow, Yoonbai Kim, Wei Sun
Characterizing Exchange Rate Policy In East Asia: A Reconsideration, Hwee Kwan Chow, Yoonbai Kim, Wei Sun
Research Collection School Of Economics
Frankel and Wei (1994) developed and popularized a method for uncovering the implicit weights assigned to major international currencies constituting a currency basket. We extend the methodology in two dimensions: include regional competitive pressure and employ a vector autoregressive (VAR) model to overcome simultaneity bias. With these modifications, we confirm the prominent role of the US dollar in the exchange rate policy of East Asian economies beyond the short run. However, despite the high degree of commitment to nominal exchange rate stability prior to the crisis, fluctuations in most East Asian currencies are also significantly influenced by country specific shocks. …
Nonlinear Filters Based On Taylor Series Expansions, Hisashi Tanizaki, Roberto S. Mariano
Nonlinear Filters Based On Taylor Series Expansions, Hisashi Tanizaki, Roberto S. Mariano
Research Collection School Of Economics
The nonlinear filters based on Taylor series approximation are broadly used for computational simplicity, even though their filtering estimates are clearly biased. In this paper, first, we analyze what is approximated when we apply the expanded nonlinear functions to the standard linear recursive Kalman filter algorithm. Next, since the state variable αt and αt-t are approximated as a conditional normal distribution given information up to time t - 1 (i.e., It-1) in approximation of the Taylor series expansion, it might be appropriate to evaluate each expectation by generating normal random numbers of αt and α …
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
Research Collection School Of Economics
Open-economy macroeconomics contains a monetary model in the Keynesian tradition that is deemed serviceable for analyzing the short run and a nonmonetary neoclassical model thought capable of handling the long run. But do the Keynesian and neoclassical models meet the challenges thrown out by the main events of the past few decades? We first indicate that the effects of these shocks on the open economy are not well captured by either the standard Keynesian model or the standard neoclassical theory. Next we provide a careful development of a nonmonetary model of the equilibrium path of the real exchange rate, share …
Autarkic Indeterminacy And Trade Determinacy, Kong Weng Ho, Nicholas Sim
Autarkic Indeterminacy And Trade Determinacy, Kong Weng Ho, Nicholas Sim
Research Collection School Of Economics
No abstract provided.
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
Research Collection School Of Economics
In open-economy macroeconomics there is a monetary model in the Keynesian tradition that is deemed serviceable for analyzing the short run and there is a nonmonetary neoclassical theory thought capable of handling the long run. But do the Keynesian and neoclassical models meet the challenges thrown out by the main events of the past few decades¡ªthe '80s shock to Europe taking the form of an external jump in real interest rates; the sort of shock experienced in the U.S. and parts of northern Europe in the second half of the '90s: the emerging prospect of new industries in the future …
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
A Structuralist Model Of The Small Open Economy In The Short, Medium And Long Run, Hian Teck Hoon, Edmund S. Phelps
Research Collection School Of Economics
Open-economy macroeconomics contains a monetary model in the Keynesian tradition that is deemed serviceable for analyzing the short run and a nonmonetary neoclassical model thought capable of handling the long run. But do the Keynesian and neoclassical models meet the challenges thrown out by the main events of the past few decades—the ’80s shock to Europe from the sharp increase of external real interest rates; the kind of speculative shock experienced in the U.S. and parts of northern Europe in the second half of the ’90s: the prospect of new industries emerging in the future with needs for new capital; …
Distance To Frontier And The Big Swings Of The Unemployment Rate: What Room Is Left For Monetary Policy?, Hian Teck Hoon, Kong Weng Ho
Distance To Frontier And The Big Swings Of The Unemployment Rate: What Room Is Left For Monetary Policy?, Hian Teck Hoon, Kong Weng Ho
Research Collection School Of Economics
This paper builds upon Hoon and Phelps (1992, 1997) to ask how much of the evolution of the unemployment rate over several decades in country can be explained by real factors in an equilibrium model of the natural rate where country's productivity growth depends upon its distance from the world's technological leader. One motivating contemporary example includes the evolution of unemployment rates in Europe as it recovered from the second world war and caught up technologically to the US. Another example that may be less familiar to many people is Singapore (the second fastest growing economy from 1960 to 2000 …
Poverty Alleviation Through Geographic Targeting, Chris Elbers, Tomoki Fujii, Peter Lanjouw, Berk Ozler, Wesley Yin
Poverty Alleviation Through Geographic Targeting, Chris Elbers, Tomoki Fujii, Peter Lanjouw, Berk Ozler, Wesley Yin
Research Collection School Of Economics
In this paper, we employ recently completed “poverty maps” for three countries as tools for an ex ante evaluation of the distributional incidence of geographic targeting of public resources. We simulate the impact on poverty of transferring an exogenously given budget to geographically defined sub-groups of the population according to their relative poverty status. We find large gains from targeting smaller administrative units, such as districts or villages. However, these gains are still far from the poverty reduction that would be possible had the planners had access to information on household level income or consumption. Our results indicate that a …
Bayesian Analysis Of Dsge Models, Sungbae An, Frank Schorfheide
Bayesian Analysis Of Dsge Models, Sungbae An, Frank Schorfheide
Research Collection School Of Economics
This paper reviews Bayesian methods that have been developed in recent years to estimate and evaluate dynamic stochastic general equilibrium (DSGE) models. We consider the estimation of linearized DSGE models, the evaluation of models based on Bayesian model checking, posterior odds comparisons, and comparisons to vector autoregressions, as well as the non-linear estimation based on a second-order accurate model solution. These methods are applied to data generated from correctly specified and misspecified linearized DSGE models and a DSGE model that was solved with a second-order perturbation method.
Modelling Spatial Dependence And Social Interactions, Zhenlin Yang
Modelling Spatial Dependence And Social Interactions, Zhenlin Yang
Research Collection School Of Economics
Spatial dependence or social interaction among economic agents or social actors, such as neighbourhood effects, copycatting, and peer group effects, has recently received increased attention from regional scientists, economists, econometricians, and statisticians.
A Unified Confidence Interval For Reliability-Related Quantities Of Two-Parameter Weibull Distribution, Zhenlin Yang, Min Xie, Augustine C.M. Wong
A Unified Confidence Interval For Reliability-Related Quantities Of Two-Parameter Weibull Distribution, Zhenlin Yang, Min Xie, Augustine C.M. Wong
Research Collection School Of Economics
Statistical inference methods for the Weibull parameters and their functions usually depend on extensive tables, and hence are rather inconvenient for the practical applications. In this paper, we propose a general method for constructing confidence intervals for the Weibull parameters and their functions, which eliminates the need for the extensive tables. The method is applied to obtain confidence intervals for the scale parameter, the mean-time-to-failure, the percentile function, and the reliability function. Monte-Carlo simulation shows that these intervals possess excellent finite sample properties, having coverage probabilities very close to their nominal levels, irrespective of the sample size and the degree …
Financial Liberalization And Monetary Policy Cooperation In East Asia, Hwee Kwan Chow, Peter N. Kriz, Roberto S. Mariano, Augustine H. H. Tan
Financial Liberalization And Monetary Policy Cooperation In East Asia, Hwee Kwan Chow, Peter N. Kriz, Roberto S. Mariano, Augustine H. H. Tan
Research Collection School Of Economics
As the countries in East Asia embark on financial liberalization, a key issue that confronts policymakers is the greater complexity of risks that is injected into the financial system. In particular, capital account liberalization may potentially increase the vulnerability of individual countries to external financial shocks. This paper advocates the optimally cascading of financial liberalization that is consistent across three dimensions: extent of domestic financial liberalization; the degree of exchange rate flexibility; and the scope of capital account liberalization. Unless the process of liberalization is properly managed, it could provoke destabilizing capital flows and lead to volatile exchange rates. Smooth …
Urban Rail Transit Ppps: Survey And Risk Assessment Of Recent Strategies, Sock-Yong Phang
Urban Rail Transit Ppps: Survey And Risk Assessment Of Recent Strategies, Sock-Yong Phang
Research Collection School Of Economics
The proliferation of urban rail transit public-private partnerships (PPPs) in Latin America and Southeast Asia is a recent phenomenon. This paper first reviews the theoretical literature on the public procurement versus PPP decision in the context of rail transit and assesses the risks involved in entering these partnerships. The urban rail transit PPP approaches adopted in Bangkok, Kuala Lumpur, Buenos Aires, Rio de Janeiro, Singapore, Hong Kong, and London are described and classified into four broad approaches: (i) the development of new systems through Design-Build-Finance-Operate (DBFO), (ii) the concessioning of rail and subway services, (iii) the sale of state-owned operators …
Unit Root Log Periodogram Regression, Peter C. B. Phillips
Unit Root Log Periodogram Regression, Peter C. B. Phillips
Research Collection School Of Economics
Log periodogram (LP) regression is shown to be consistent and to have a mixed normal limit distribution when the memory parameter d=1. Gaussian errors are not required. The proof relies on a new result showing that asymptotically infinite collections of discrete Fourier transforms (dft's) of a short memory process at the fundamental frequencies in the vicinity of the origin can be treated as asymptotically independent normal variates, provided one does not include too many dft's in the collection.
How Doctors And Patients Get Better, Knowledge@Smu
How Doctors And Patients Get Better, Knowledge@Smu
Knowledge@SMU
In Better: A Surgeon's Notes on Performance, Atul Gawande, a surgeon who also is a staff writer for The New Yorker magazine, examines both the utilitarian and the human sides of medical practice. In the book, he examines what goes right in American medical care, what goes wrong, how things either succeed or fail, and what might be done to improve the system. Among the examples he provides: A polio "mop up" in Karnataka, where Indian health care workers deployed 37,000 vaccinators to immunize 4 million children – in three days.