Recessionary Gap

The aggregate market presented in the graph to the right can provide an understanding of a recessionary gap. The vertical long-run aggregate supply curve, labeled LRAS, marks full-employment real production. Long-run equilibrium in the aggregate market necessarily results in full-employment real production.

The positively-sloped short-run aggregate supply curve is labeled SRAS. Short-run equilibrium in the aggregate market occurs at the price level and real production corresponding to the intersection of the aggregate demand curve and this SRAS curve. Should short-run real production fall short of full-employment real production, then a recessionary gap results. However, to identify a recessionary gap an aggregate demand curve needs to be added to the graph.

To include the aggregate demand curve and illustrate a recessionary gap for this aggregate market, click the [Recessionary Gap] button. Doing so reveals a short-run equilibrium level of real production that is less than full employment, which is a recessionary situation. Note that the aggregate demand curve, labeled AD, intersects the SRAS curve at a real production level to the left of the LRAS curve. This means the short-run real production is less than full-employment real production. The difference between short-run equilibrium real production and full-employment real production is the recessionary gap.

The basic reason for the emergence of a recessionary gap is short-run resource price rigidity. Because resource prices, especially wages, tend to be inflexible in the short-run, any downturn in the economy (that is, decline in aggregate demand) generates less production and employment, and thus higher unemployment, rather than lower wages and resource prices.

The primary problem associated with a recessionary gap is unemployment. This is not only detrimental to the unemployed resources, who suffer personal hardships, but it also means less real production is available to the rest of the economy. Because of this undesirability, government often considers alternative stabilization policies to correct the situation, including expansionary monetary and fiscal policies. The intent of such policies is to increase the short-run real production level to the long-run full-employment level of real production.