Commodity price uncertainty imposes large costs on society. On the macro level, it results in sudden and unexpected shifts in current account imbalances and real GDP volatility, while on the micro level, it leads to allocation inefficiencies. Accurate price forecasts have the potential to remove...

Recent theoretical developments in exchange rate economics have led to important new insights into the functioning of the foreign exchange market. The simple models of the 1970s, which could not withstand empirical evaluation, have been succeeded by more complex models that draw on theoretical...

Ample mutual misunderstanding exists between the United States and China in their economic arguments. There is likely to be an important race between economic and demographic forces that will naturally redress the imbalances and the political imperatives for each country to stand tough and fight.

We propose that the formation of beliefs be treated as statistical hypothesis tests, and we label such beliefs inferential expectations. If a belief is overturned through the build-up of evidence, agents are assumed to switch to the rational expectation. Rational expectations are shown to be a...

Over the past two years, the IMF staff has been developing a new multicountry macroeconomic model called the Global Economy Model (GEM). This paper explains why such a model is needed, how GEM differs from its predecessor model, and how the new features of the model can improve the IMF’s...