International Spillover Effects and Monetary Policy Activism

This paper examines how the preferences of a large economy’s central bank affect the trade‐off between output and inflation volatility faced by the central bank of a small open economy by analyzing the impact of a global cost‐push shock. We demonstrate that under the assumption of producer currency pricing, the trade‐off faced by the small open economy is likely to worsen as the foreign central bank becomes more focused on output stabilization relative to inflation stabilization; but the opposite is true in the case of local currency pricing.     

Credit Traps and Macroprudential Leverage

We construct a macroeconomic model with overlapping generations to study credit traps—prolonged periods of stagnant real activity accompanied by low productivity, financial sector undercapitalization, and credit misallocation. Shocks to bank capital tighten banks' borrowing constraints causing them to allocate credit to easily collateralizable but low productivity projects. Low productivity weakens bank capital generation, reinforcing tight borrowing constraints, sustaining the credit trap steady state. Macroprudential policy to limit bank leverage can be welfare enhancing. In the presence of a credit trap, optimal leverage policy is countercyclical.     

Global and Regional Geo-strategic Implications of China's Emergence

Now that China's "re-emergence" as a world center of production is obvious, concerns about its implications are being raised throughout the world, in general, and particularly in East Asia. China's economic growth is nothing but spectacular. If all parties are rational, however, a peaceful rise for China is possible. Peaceful management of the Taiwan Strait is critical in this respect. There are two possible scenarios for the peaceful rise of China: a unilateralist China in the multipolar world of competition, and a multilateralist, postmodern China embedded in an East Asian community. It is in the interest of Japan, the United States and other countries in the international society to induce China to take the latter scenario. To realize this goal, efforts on the part of China are critical, but the efforts of other countries such as the United States and Japan are also very important.     

RE‐EXAMINATION OF THE GROWTH‐ENHANCING BUBBLE

We investigate the growth and welfare effects of the bubble that arise on equities on newly created firms by R&D activities. Considering an economy where the input to the R&D sector is the final goods financed by the savings of the household sector, we show that such a bubble has a growth‐enhancing effect under the condition opposite to the previous literature. We also explore the characteristics of the steady state equilibrium with the bubble and demonstrate that there can be dual bubbly equilibria, one of which is unstable and the other stable, and that the growth and welfare effects of an unexpected permanent change in the initial bubble are very different depending on which equilibrium the economy stays in.     

SELF‐CONTROL PROBLEMS AND CONSUMPTION‐SAVING DECISIONS: THEORY AND EMPIRICAL EVIDENCE*

Time‐discounting is a fundamental preference which affects wealth accumulation. If people are impatient, they may spend their earnings instantaneously, and do not save enough for the future. People are often time‐inconsistent, i.e., they often put exceptionally high value on immediate consumption compared to any time in the future. Whether they are aware or not, these individuals are susceptible to self‐control problems. In this paper, we review theoretical and empirical research on time‐inconsistency and self‐control problems, particularly on consumption and saving, and discuss their policy implications.     

How Do Crises Spread? Evidence from Accessible and Inaccessible Stock Indices

We provide empirical evidence that stock market crises are spread globally through asset holdings of international investors. By separating emerging market stocks into two categories, namely, those that are eligible for purchase by foreigners (accessible) and those that are not (inaccessible), we estimate and compare the degree to which accessible and inaccessible stock index returns co‐move with crisis country index returns. Our results show greater co‐movement during high volatility periods, especially for accessible stock index returns, suggesting that crises spread through the asset holdings of international investors rather than through changes in fundamentals.