On the Transmission Mechanism of Policy Shocks in Developing Countries

The debate over the effectiveness of demand-side stabilizing policies has often centred over the relative effectiveness of monetary and fiscal policies. Demand- and supply-side constraints are both relevant. On the supply side, price flexibility may be the result of structural and/or institutional constraints that warrant a larger degree of price adjustment in the face of demand fluctuations. On the demand side, structural constraints may hinder the transmission mechanism of demand fluctuations, resulting in an inelastic aggregate demand in the face of policy adjustments. Using data for 50 developing countries, supply-side constraints do not differentiate the transmission mechanism of policy shocks to price inflation and output growth. In contrast, a larger demand shift in the face of monetary and government spending shocks increases the real and inflationary effects of policy shocks. The pronounced evidence of upward price flexibility points to the importance of addressing supply-side capacity constraints to counter inflationary pressures in developing countries. Equally important is to analyse determinants of private spending to identify channels for influencing aggregate spending and maximizing the effectiveness of stabilization policies.