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Garcia Schmidt In Addition To Woodford On Neo-Fisherian Economcs

Mariana Garcia Schmidt together with Mike Woodford are lighting upwards the meshing alongside a pNoah Smith, Marginal Revolution, econbrowser.

This is a specially of import voice, every bit it seemed to me that measure New-Keynesian models attain the new-Fisherian result. i = r + Epi is a steady acre inwards all models. In old-Keynesian models, it was an unstable steady state, thus an involvement charge per unit of measurement peg leads to explosive inflation or deflation. But inwards new-Keynesian models, an involvement charge per unit of measurement peg is the stable/indeterminate case. There are also many equilibria, but if you lot heighten involvement rates, inflation ever ends upwards rise to run across the higher involvement rate.

What I tin reach notice glean from the slides is that Garcia Schmidt together with Woodford agree: Yes, this is what happens inwards rational expectations or perfect foresight versions of the new-Keynesian model. But if you lot add together learning mechanisms, it goes away.

My outset reaction is relief -- if Woodford says it is a prediction of the measure perfect foresight / rational expectations version, that agency I didn't screw upwards somewhere. And if 1 has to resort to learning together with non-rational expectations to acquire rid of a result, the battle is one-half won.

But that's alone preliminary relief. Schmidt together with Woodford hope a newspaper soon, which volition undoubtedly live good crafted together with challenging.

For to a greater extent than on the issue, hither is a a previous weblog post. Section 3.1 ff of "Monetary policy alongside involvement on reserves" has a sum novel Keynesian model alongside the Fisherian result. And a wry prediction: the Fed volition heighten rates to caput off inflation, that volition drive the inflation, thus the Fed volition congratulate itself on having headed off the inflation.  I also suspect that models alongside restricted liquidity (no involvement on reserves) attain reach a temporary spend upwards inwards inflation, but without that liquidity nosotros similar a shot volition acquire sum Fisherian results. But that's only a conjecture thus far.  My last foray into learning inwards new-Keynesian models, which didn't goal well.

Why ship service now? Garcia Schmidt together with Woodford clearly volition convey a thoughtful together with sophisticated paper, on what I retrieve is a deep together with of import point. I hope to encourage others to read together with help to digest the paper.


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