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The Superiority of Contingent Rules over Fixed Rules in Models with Rational Expectations

  • Willem H. Buiter

The paper investigates the robustness of the proposition that in stochastic models contingent or feddback rules dominate fiped or openloop rules. Four arguments in favour of fixed rules are considere`. 1) The presence of an incompetent op malevolent policy maker. 2) A trade-off between flexibility and simplicity or credibility. 3) The New Classical proposition that only unanticipated (stabilization) policy has real effects. 4) The "time-inconsistency" of optimal plans in non-causal models, that is models in which the current state of the economy depends on expectations of future states. The main conclusion is that the "rational expectations revolution", represented by arguments (3) and (4) does not affect the potential superiority of (time-inconsistent) closed-loop policies over (time-inconsistent) open-loop policies. The case against conditionality in the design of policy must therefore rest on argument (1) or (2) which predate the New Classical Macroeconomics.

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File URL: http://www.nber.org/papers/t0009.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Technical Working Papers with number 0009.

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Date of creation: Dec 1981
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Publication status: published as Buiter, Willem H. "The Superiority of Contingent Rules over Fixed Rulds in Models with Rational Expectations." The Economic Journal, Vol. 91, (September 1981), pp. 647-670.
Handle: RePEc:nbr:nberte:0009
Note: ITI IFM
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  1. Barro, Robert J., 1974. "Are Government Bonds Net Wealth?," Scholarly Articles 3451399, Harvard University Department of Economics.
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