Matthew C Klein, Columnist

How Can We Tell If 'Abenomics' Is Working?

Japan is in the midst of a grand experiment to revivify its economy through a three-pronged campaign of monetary easing, fiscal stimulus and structural reforms. 
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Japan is in the midst of a grand experiment to revivify its economy through a three-pronged campaign of monetary easing, fiscal stimulus and structural reforms. The markets have noticed: The Nikkei stock index has gained more than 70 percent while the yen has become more than 22 percent cheaper relative to the dollar and the euro since mid-November. At the same time, the difference in yields between 5-year Japanese government bonds and their inflation-indexed equivalents has widened by more than a percentage point.

All of this has led some observers to declare that Japanese expectations about inflation and growth have been transformed, thereby leading to a resurgence of domestic spending, hiring and investment. It's unclear, however, that this has actually happened.