International financial integration and risk sharing among countries: A production-based approach

This paper develops a production-based model for analyzing a role of asset trade in pooling risks among countries and provides new evidence for the international consumption-output puzzle and risk sharing among countries. Efficient risk sharing rules among countries are the same as the conditions for full financial integration. Input prices and interest rates as well as technology shocks are found to be the driving variables for cross-country output co-movements. The international correlation puzzle reflects an inability to account for production risk sharing among countries in previous studies. The degree of international risk sharing is substantial relative to earlier estimates, which is largely realized from pooling production risks rather than consumption risks among countries.     

Analyzing the effects of US monetary policy shocks in dollarized countries

Identifying monetary policy shocks is difficult. Therefore, instead of trying to do this perfectly, this paper exploits a natural setting that reduces the consequences of shock misidentification. It does so by basing conclusions upon the responses of variables in three dollarized countries (Ecuador, El Salvador, and Panama). They import US monetary policy just as genuine US states do, but have the advantage that non-monetary US shocks are not imported perfectly. Consequently, this setting reduces the effects of any mistakenly included non-monetary US shocks, while leaving the effects of true monetary shocks unaffected. Results suggest that prices fall after monetary contractions; output does not show a clear response.     

Dissecting the China Puzzle: Asymmetric Liberalization and Cost Distortion

We attempt to explain the China Puzzle, the coexistence of accelerating economic growth, and a worsening growth outlook. The root cause lies in China's unique liberalization approach, that is, the combination of a complete liberalization of product markets and continued distortions in factor markets. Repressed costs of labor, capital, land, and resources artificially raise the profits of production, increase the returns to investment, and improve the international competitiveness of Chinese products. The asymmetric liberalization approach not only promoted economic growth, but also caused structural risks. It also contributed to global imbalances as well as regional integration. Therefore, future reform policies should focus on the liberalization of the factor markets and the elimination of cost distortions.     

Costly external finance and labor market dynamics

We study the role of agency frictions and costly external finance in cyclical labor market dynamics, with a focus on how credit-market frictions may amplify aggregate TFP shocks. The main result is that aggregate TFP shocks lead to large fluctuations of labor market quantities if the model is calibrated to the empirically observed countercyclicality of the finance premium. A financial accelerator mechanism thus amplifies labor market fluctuations by rendering rigidity in real wage dynamics. In contrast, if the finance premium is procyclical, which the model can be parameterized to accommodate, amplification is absent, and labor-market fluctuations display the Shimer (2005) puzzle.     

How does a pay-as-you-go system affect asset returns and the equity premium?

When applying a differences-in-differences approach, equity returns and the equity premium are both estimated to be more than four percentage points higher after the introduction of a pay-as-you-go (PAYGO) system. In a realistically calibrated model, the PAYGO system is also found to increase the returns and the premium, although the effects are smaller than in the data. Intuitively, the system lowers asset prices, which in turn increases the importance of dividend risk. Since only equity is subject to dividend risk, equity returns become more volatile relative to bond returns.     

Feldstein–Horioka puzzles

The high correlation between national saving and investment rates in advanced economies—the Feldstein–Horioka puzzle—has been referred to as the “mother of all puzzles.” Perhaps more puzzling is that for emerging economies saving–investment correlations tend to be significantly lower, though still positive. This deepens the Feldstein–Horioka puzzle because the mobility of capital is generally believed to be much lower in emerging economies than in advanced economies, and a country with less mobile capital should have a tighter relationship between local saving and investment rates. This paper develops a DSGE model that, without resorting to any real or financial friction, simultaneously explains these two aspects of the Feldstein–Horioka puzzle: positive saving–investment correlations in both advanced and emerging economies and significantly lower saving–investment correlations in emerging economies than in advanced economies. The main features of the model include long-run risk, an endogenous world interest rate, and cross-correlations of national and global shocks. The findings hold for both quarterly time series and long-run averages.     

以小说的方式言说文化：文化悬念小说价值阐释——兼评宋耀良《西夏谜城》

与传统悬念小说不同,新悬念小说包括知识悬疑小说和文化悬念小说,在满足读者的解谜欲之外,更多地着眼于人的求知欲,激发人的好奇心。这种类型小说中的文化悬念小说是国外知识悬疑小说中国化后引入的一个概念,传承了＂文以载道＂的传统,以小说的方式言说文化。宋耀良的《西夏谜城》在文化悬念小说作品中颇具代表性。作品以小说的形式来解谜一个消失的王朝———西夏,让被称为＂东方金字塔＂的西夏王陵、拥有过＂中世纪图书馆＂的黑城遗址和＂乍视字皆可识,熟识无一字可识＂的西夏文字等诸多西夏之谜在普通人的眼里绽放出生命的＂音容笑貌、歌舞哀哭＂。     

Switching VARMA Term Structure Models

The purpose of this article is to propose a global discrete-timemodeling of the term structure of interest rates which is ableto capture simultaneously the following important features:(i) a historical dynamics of the factor driving term structureshapes involving several lagged values, and switching regimes;(ii) a specification of the stochastic discount factor (SDF)with time-varying and regime-dependent risk-premia; (iii) explicitor quasi explicit formulas for zero-coupon bond (ZCB) and interestrate derivative prices. We develop the switching autoregressivenormal (SARN) and the switching vector autoregressive normal(SVARN) Factor-Based Term Structure Models of order p. The factoris considered as a latent variable or an observable variable:in the second case the factor is a vector of several yields.Regime shifts are described by a Markov chain with (historical)nonhomogeneous transition probabilities. An empirical analysisof bivariate VAR(p) and SVARN(p) Factor-Based Term StructureModels, using monthly observations of the U.S. term structureof interest rates, and a goodness-of-fit and expectation hypothesispuzzle comparison with competing models in the literature, showsthe determinant role played by the observable nature of thefactor, lags, and switching regimes in the term structure modeling.