Scandinavian Working Papers in Economics
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Bank of Finland Research Discussion Papers, Bank of Finland

No 13/1998:
Macroeconomic Effects of Looming Policy Shifts: Non-falsified Expectations and Peso Problems

Jouko Vilmunen ()

Abstract: Using a standard model as a basis, we analyse the rational expectations macroeconomic equilibrium for an open economy with flexible exchange rates, in which expectations are affected by a perceived possibility of discrete shifts in monetary policy. These discrete shifts are modelled as possible jumps in the money supply process, which is otherwise a smooth random walk. Two such jump models are analysed. In equilibrium, the distribution of endogenous variables is (apparently systematically) affected by peso problems (premia), which reflect distributional peculiarities associated with expectations of possible future policy shifts. It turns out that the macroeconomic effects of peso premia accord closely with intuition regarding the effects of poor credibility of a policy regime: the output gap widens; the levels of real interest rates and domestic prices rise; and the domestic currency appreciates in real terms due to anticipated expansionary shifts in the money supply. Moreover, the key macro-aggregates become more volatile. The effects of peso premia on the nominal interest rate and the exchange rate turn out to be ambiguous.

Keywords: poisson process; policy shifts; peso problem; rational expectations; (follow links to similar papers)

48 pages, July 2, 1998

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