Selected Essays of Axel Leijonhufvud
- Economists of the Twentieth Century series
Chapter 3: Keynesianism, Monetarism and rational expectations: some reflections and conjectures
3. Keynesianism, Monetarism and rational expectations: some reﬂections and conjectures* To what extent is Keynesianism discredited? Is there anything left? Did Monetarism score a total victory? Must rational expectations make New Classical economists of us all? Every teacher of macroeconomics has to wrestle with these questions – hoping against hope that some new cataclysm will not let some fantastic supply-side doctrine or whatever sweep the ﬁeld before he has been able to sort through the rubble of what he once knew. I am going to sort some of my rubble. The object of the exercise is to make some guesses at how the seemingly still useable pieces might ﬁt together. My starting points are as follows. Keynesianism foundered on the Phillips curve or, more generally, on the failure to incorporate inﬂation rate expectations in the model. The inﬂation, which revealed this critical fault for all to see, was in considerable measure the product of ‘playing the Phillips curve’ policies. But the stable Phillips trade-off was not an integral part of Keynesian theory.1 Its removal, therefore, should not be (rationally) expected to demolish the whole structure. Monetarism made enormous headway in the economics profession and with the public when the misbehavior of the Phillips curve and the inﬂation premium in nominal interest rates became obvious for all to see. Few observers could continue to doubt the strong link between nominal income and money stock as the great American inﬂation went on and on and on. The Monetarist...
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