The Phillips Curve, the Persistence of Inflation and the Lucas Critique: Evidence from Exchange Rate Regimes

We present evidence from the United States and the United Kingdom that the persistence of price inflation is significantly higher under managed-exchange-rate regimes than under gold-based, fixed-exchange-rate regimes. These differences are also reflected in expectations-augmented Phillips curves. We use a two-country macro model, with forward-looking price setters, to demonstrate that higher monetary accommodation of inflation and exchange-rate accommodation of inflation differentials increase inflation persistence. The evidence does not contradict this hypothesis. It supports the hypothesis of forward-looking price setters and highlights the empirical signijicance of the Lucas critique. (JEL E31, E42, F33)

American Economic Review (with Ron Smith)

Full Article PDF

On Budgetary Policies, Growth, and External Deficits in an Interdependent World

We investigate the effects of budgetary policies in a two-country model of overlapping generations and endogenous growth. In the presence of capital mobility, endogenous growth rates are equalized, but output levels do not converge. A worldwide rise in the public debt to GDP ratio or the share of government consumption reduces savings and growth. A relative rise in one country’s debt to GDP ratio or its GDP share of government consumption results in a fall in external assets and its relative savings rate. In the short run, the fall in the savings rate is higher, and the country experiences higher current account deficits as a percentage of GDP.

Journal of the Japanese and International Economies (with Rick van der Ploeg)

Full Paper PDF