EC140 Lecture Notes - Lecture 10: Output Gap, Unemployment, Potential Output

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12 Feb 2018
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EC140 Full Course Notes
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Real gdp determined by intersection of supply and demand. Technology and factor supplies are assumed constant. Total output if all productive resources were fully employed- independent of prices level: this does not mean 0 unemployment, there will still be frictional and structural unemployment yet cyclical unemployment is 0. Changes in potential output are long-run, not short-run. If real gdp < potential output: recessionary gap. If real gdp > potential output: inflationary gap. Potential gdp as an anchor - economy returns to potential gdp after a shock. This causes the as curve to shift left. Shifts end when real gdp equals potential gdp. This causes the as curve to shift right. Shifts end when real gdp equals potential output. Lower wages lead to lower costs for other inputs. Recessionary gaps bring very slow wage adjustment: extensive research into why, behavioral responses by workers seem most likely. Implies recovery from recession is much slower than we might think.

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