The study looked at how changes in exchange rates affect prices in different countries. They found that since the 1980s, exchange rate changes have had less impact on inflation in many countries. This is because central banks have been focusing more on controlling inflation. The researchers tested this idea on eleven industrial countries from 1971 to 2000. They discovered that both the impact of exchange rate changes on inflation and the variability of inflation decreased in the 1990s. They also found a connection between how much exchange rates affect prices and how stable inflation is. However, they couldn't definitively link the decrease in this impact to changes in how central banks manage money.