Guest Contribution: The Liquidity Trap Does Not Make Monetary Policy Ineffective
Menzie Chinn (November 9th, 2009) Writes:
By Joseph E. Gagnon
Today, we're fortunate to have Joe Gagnon, senior fellow at the Peterson Institute for International Economics, as a guest contributor.
With short-term risk-free interest rates essentially at zero in the major developed economies, conventional monetary policy is in a liquidity trap. As a number of commentators have observed, printing zero-interest-rate money to buy zero-interest-rate assets has no real economic effect because the assets are near-perfect substitutes for money. But does that mean that central banks have lost their power? Jim Hamilton asserts that central bank purchases of other assets, with positive yields, can always create inflation, though he is silent as to whether they can affect output. Building on Gauti Eggertsson and Michael Woodford, Scott Sumner argues that central banks can boost output and inflation despite zero interest rates by raising the public's expectations of future inflation and thus
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Figure 1: Net International Investment Position, end-year (blue squares), and Cumulative Current Account balance on a NIPA basis (red line), as a ratio to GDP. NBER recession dates in gray shading. Sources: 




