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The Phillips curve is an ... Supply shocks and changes in built-in inflation are the main factors shifting the short-run Phillips curve and changing the trade-off. In ...
One important application of the critique (independent of proposed microfoundations) is its implication that the historical negative correlation between inflation and unemployment, known as the Phillips curve, could break down if the monetary authorities attempted to exploit it.
The model accounts for the empirically based trade off between output and prices represented by the Phillips curve, but the function breaks from the Phillips curve since only unanticipated price level changes lead to changes in output. [1]
Soon after the publication of Phillips' paper, the idea that there was a trade-off between a strong economy and low inflation caught the imagination of academic economists and policy-makers alike. Paul Samuelson and Robert Solow wrote an influential article describing the possibilities suggested by the Phillips curve in the context of the ...
The New Keynesian Phillips curve was originally derived by Roberts in ... At any other desired target for the inflation rate, there is an endogenous trade-off, even ...
Friedman and Phelps used models with no long-run trade-off between inflation and unemployment. Instead of the Phillips curve they used models based on the natural rate of unemployment where expansionary monetary policy can only temporarily shift unemployment below the natural rate. Eventually, firms will adjust their prices and wages for ...
This exhibits a Phillips curve relationship, as inflation is positively related with output (i.e. inflation is negatively related with unemployment). However, and this is the point, the existence of a short-run Phillips curve does not make the central bank capable of exploiting this relationship in a systematic way.
Lucas' intention was to prove that the Phillips curve exists without existing. It has been a heritage that there is a trade-off between inflation and unemployment or real economic performance, so it is undoubted that there is a short run Phillips curve (or there are short run Phillips curves).