1. Have Macroeconomic Rules of the Game Changed? Some Clues from the Phillips Curve
- Author:
- Samuel Howorth, Domenico Lombardi, and Pierre Siklos
- Publication Date:
- 02-2016
- Content Type:
- Policy Brief
- Institution:
- Centre for International Governance Innovation
- Abstract:
- Students of macroeconomics will have heard about the central role played by the so-called Phillips curve in both theoretical and empirical analyses for almost 70 years. In 1958, A. W. Phillips reported an inverse relationship between changes in wages and the unemployment rate (Phillips 1958). The progeny of his thinking led to a revolution both in policy making and in the development of theoretical links between the real and nominal macroeconomic variables. Names such as Samuelson, Solow, Phelps, Friedman, Lucas and Sargent became associated with refinements and enhancements of the core finding reported by Phillips. Indeed, all of these economists went on to become Nobel laureates in economics, although not exclusively because of their contributions to the analysis of what has since been called the Phillips curve. Indeed, the concept is so influential that it spawned several different versions of the trade-off used to guide policy makers as a menu for the choices they face when deciding whether the gains from lower inflation are offset by the economic costs of higher unemployment. Initially, expectations of individuals or firms were ignored. This briefly gave policy makers the impression that they could simply select an inflation-unemployment combination and implement the necessary policy mix to achieve the desired outcome. Once a role for expectations was incorporated, debate centred on how forward-looking individuals are. The more forward-looking, the less likely it was that policy makers would be able to “exploit” the trade-off because, unless wages rose in purchasing-power terms, the gains from lower unemployment would, at best, be temporary once workers realized that the higher inflation, at unchanged wages, actually drives real wages down. Indeed, the pendulum swung all the way to the conclusion — reached by the 1970s and early 1980s — that the Phillips curve was illusory and there was no trade-off policy makers could exploit.
- Topic:
- Economics, Human Welfare, International Political Economy, Labor Issues, and Global Markets
- Political Geography:
- Global Focus