Soaring commodity prices in 2007 and 2008 raised concerns that volatility was also rising, which would have implications for welfare and therefore for the design of public policy interventions. The literature focuses on trends in commodity prices rather than their volatility characteristics....

"The authors apply regime-switching methods to a monetarist model of exchange rates and identify well-defined intervention policy cycles. The policy response indices include a standard exchange market pressure-based index and a model-based volatility ratio that is endogenized relative to Japan,...

"The author presents evidence that balance sheet effects are critical determinants of both the likelihood of a crisis and of income losses following a crisis. She tests the validity of "insurance" and "liquidity" models of currency crisis. Both models predict that the occurrence of a balance of...