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AP MacroeconomicsPhillips Curve

Falling Inflation Expectations

When people expect less inflation, the short-run tradeoff improves.

Falling Inflation Expectations

Phillips Curve

When people expect less inflation, the short-run tradeoff improves.

A graph of Inflation Rate (%) against Unemployment Rate (%) with the curve SRPC. Unemployment Rate (%) Inflation Rate (%) SRPCLRPC

Step 1 of 3

Start with high expected inflation

The economy sits at the natural rate of unemployment on a short-run Phillips curve that reflects relatively high expected inflation. Actual inflation equals that elevated expected rate.

Now try it yourself: shift the curves in a graded FRQ drill, or open this graph in the free sandbox.

Falling Inflation Expectations: what happens on the Phillips Curve graph?

  1. 1

    Start with high expected inflation

    The economy sits at the natural rate of unemployment on a short-run Phillips curve that reflects relatively high expected inflation. Actual inflation equals that elevated expected rate.

  2. 2

    Expectations fall

    A long stretch of low actual inflation convinces people that future inflation will be lower, so expected inflation falls. Lower expected inflation shifts the short-run Phillips curve down and to the left.

  3. 3

    A better short-run tradeoff

    On the new lower short-run Phillips curve, the economy faces less inflation at every unemployment rate. At the natural rate of unemployment, inflation is now lower, and any given unemployment target can be reached with a smaller inflation cost.

Where it ends up

A fall in expected inflation shifts the short-run Phillips curve down and to the left, giving lower inflation at every unemployment rate and improving the short-run inflation-unemployment tradeoff.

Now draw it yourself

Same graph, graded on whether you move the right curve and leave the rest alone.

More Phillips Curve walkthroughs

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