Terms Of Trade Shocks And Incomplete Information

"The terms of trade are subject to both permanent and transitory shocks. Particularly for commodity-producing small open economies, it is sometimes argued that the inability of agents to determine which of these shocks are permanent and which are transitory leads to more macroeconomic volatility than would be the case if agents had perfect information about the persistence of these shocks. I set up a small open economy model in which agents have imperfect information about the persistence of terms of trade shocks and estimate the parameters of the model using Australian data. The results point to the existence of large informational frictions. In fact, agents' beliefs about the future path of the terms of trade following transitory and permanent shocks are almost identical. However, the results also suggest that incomplete information causes agents to respond more cautiously to terms of trade shocks. Consequently, consumption, output and the trade balance are less volatile under incomplete information than they are under full information."--Abstract.

This paper examines the relationship between terms of trade shocks, private saving, and the current account position. The relationship between these variables is theoretically ambiguous: an adverse transitory terms of trade shock can either induce a deterioration or an improvement in the current account, depending on whether the resulting income effects are greater or less than the resulting substitution effects. The substitution effects involve both intertemporally substituting consumption and intratemporally substituting consumption between importables and nontradables. The relative strength of these substitution effects is estimated using data for five OECD countries during 1970/95; both are found to exert large and significant effects on the current account balance.

A three-good, stochastic intertemporal equilibrium model of a small open economy is used to examine the link between terms of trade and business cycles. Equilibrium co-movements of model economies representing industrial and developing countries are computed and compared with the stylized facts of 30 countries. The results show that terms-of-trade shocks account for half of observed output variability and that the model mimics the Harberger-Laursen-Metzler effect and produces large deviations from purchasing power parity. The elasticity of substitution between tradable and nontradable goods and the persistence of the shocks play a key role in producing these results.

This paper identifies factors that contribute to a fast recovery in growth after persistent negative terms of trade shocks, using a sample of 159 countries for 1970-2006. The results suggest that policies matter. Fast recoveries are fairly robustly related to real exchange rate depreciation and improvements in government stability and the institutional environment. A timely increase in aid may also support recovery.

The paper uses an intertemporal perfect-foresight optimizing model to analyze the effect of transitory terms-of-trade shocks on a small open . economy's current-account and utility time profiles. An adverse terms-of-trade shift known to be temporary induces the economy to run down its stock of external assets in the period before the terms of trade revert to their initial level. Subsequently, the assets consumed during this period are reaccumulated. The current-account response is due only in part to a desire to smooth out the future consumption stream. In addition, households know that the real value of any debt incurred while the terms of trade are unfavorable will be reduced sharply when the terms of trade improve. This opportunity for intertemporal price speculation causes the time path of instantaneous utility to be discontinuous,

When analyzing terms-of-trade shocks, it is implicitly assumed that the economy responds symmetrically to changes in export and import prices. Using a sample of developing countries our paper shows that this is not the case. We construct export and import price indices using commodity and manufacturing price data matched with trade shares and separately identify export price, import price, and global economic activity shocks using sign and narrative restrictions. Taken together, export and import price shocks account for around 40 percent of output fluctuations but export price shocks are, on average, twice as important as import price shocks for domestic business cycles.

A cutting-edge graduate-level textbook on the macroeconomics of international trade Combining theoretical models and data in ways unimaginable just a few years ago, open economy macroeconomics has experienced enormous growth over the past several decades. This rigorous and self-contained textbook brings graduate students, scholars, and policymakers to the research frontier and provides the tools and context necessary for new research and policy proposals. Martín Uribe and Stephanie Schmitt-Grohé factor in the discipline's latest developments, including major theoretical advances in incorporating financial and nominal frictions into microfounded dynamic models of the open economy, the availability of macro- and microdata for emerging and developed countries, and a revolution in the tools available to simulate and estimate dynamic stochastic models. The authors begin with a canonical general equilibrium model of an open economy and then build levels of complexity through the coverage of important topics such as international business-cycle analysis, financial frictions as drivers and transmitters of business cycles and global crises, sovereign default, pecuniary externalities, involuntary unemployment, optimal macroprudential policy, and the role of nominal rigidities in shaping optimal exchange-rate policy. Based on courses taught at several universities, Open Economy Macroeconomics is an essential resource for students, researchers, and practitioners. Detailed exploration of international business-cycle analysis Coverage of financial frictions as drivers and transmitters of business cycles and global crises Extensive investigation of nominal rigidities and their role in shaping optimal exchange-rate policy Other topics include fixed exchange-rate regimes, involuntary unemployment, optimal macroprudential policy, and sovereign default and debt sustainability Chapters include exercises and replication codes

This paper presents a comprehensive database of country-specific commodity price indices for 182 economies covering the period 1962-2018. For each country, the change in the international price of up to 45 individual commodities is weighted using commodity-level trade data. The database includes a commodity terms-of-trade index—which proxies the windfall gains and losses of income associated with changes in world prices—as well as additional country-specific series, including commodity export and import price indices. We provide indices that are constructed using, alternatively, fixed weights (based on average trade flows over several decades) and time-varying weights (which can account for time variation in the mix of commodities traded and the overall importance of commodities in economic activity). The paper also discusses the dynamics of commodity terms of trade across country groups and their influence on key macroeconomic aggregates.

We introduce non-tradable goods to the Heckscher-Ohlin-Samuelson (HOS) model to study the distributive effects of terms of trade shocks. We show that the employment of resources in activities producing exclusively for the local market induces a crucial association between domestic spending and factor demand and prices, which is absent in the usual HOS framework. Specifically, in a two-sector economy (producing only exportable and non-tradable goods) there are no redistributive effects of external terms of trade shifts-i.e. no Stolper-Samuelson-type of effect. By extending the model to the domestic production of a third, importable good, we show that distributional tensions arise. Distributional conflicts occur within urban labor groups (skilled vs. unskilled) and not only between the "traditional" rural vs. urban factors. Finally, export taxes are imposed to re-distribute the effects of external shocks. We show that the ability of the government to cushion the impact of the terms of trade shift on the economy’s income distribution depends crucially on the use of the tax revenues.