Aug 19th 2010 | Washington, dc

WHEN Japan slid into deflation in the mid-1990s bond investors were caught unawares. As late as 1995 yields on government bonds, a haven in times of deflation, were still approaching 5%. Investors today are not about to repeat that mistake. Inflation may be positive in America, Britain and Germany, but in all three countries government-bond yields have plunged to lows exceeded in recent times only by levels during the 2008 panic.

Since falling yields raise the value of bond principal, that has delivered bumper returns to investors. Government bonds have returned about 8% this year in local-currency terms in these three countries, according to Barclays Capital, outpacing equity returns....