Using aggregate demand, short-run aggregate supply, and...

Using aggregate demand, short-run aggregate supply, and long-run aggregate supply curves, explain the process by which each of the following economic events will move the economy from one long-run macroeconomic equilibrium to another. Illustrate with diagrams. In each case, what are the short-run and long-run effects on the aggregate price level and aggregate output? a. There is a decrease in households' wealth due to a decline in the stock market. b. The government lowers taxes, leaving households with more disposable income, with no corresponding reduction in government purchases.

Using aggregate demand, short-run aggregate supply, and long-run aggregate supply curves, explain the process by which each of the following economic events will move the economy from one long-run macroeconomic equilibrium to another. Illustrate with diagrams. In each case, what are the short-run and long-run effects on the aggregate price level and aggregate output?
a. There is a decrease in households' wealth due to a decline in the stock market.
b. The government lowers taxes, leaving households with more disposable income, with no corresponding reduction in government purchases.

Key Concepts

Self-Correcting Mechanism

The self-correcting mechanism is a process by which an economy naturally returns to its long-run equilibrium after experiencing a shock. In the short run, deviations from full-employment output may occur due to sticky prices or wages; however, over time, adjustments in expectations and resources (for example, through wage adjustments) cause the SRAS curve to shift back in a direction that restores equilibrium at the potential output level.

Fiscal Policy

Fiscal policy involves the use of government spending and taxation to influence the economy. Changes in taxation or government purchases can directly affect aggregate demand. For instance, a reduction in taxes increases disposable income for consumers, leading to higher consumption and shifting the AD curve to the right. Similarly, changes in government purchases impact overall spending, affecting both short-run output and, eventually, the long-run equilibrium if the policy changes are sustained.

Macroeconomic Equilibrium

Macroeconomic equilibrium occurs at the intersection of aggregate demand and aggregate supply curves where the quantity of output demanded equals the quantity of output supplied. In the short run, the economy can be out of its long-run equilibrium due to temporary demand or supply shocks, but in the long run the self-correcting mechanism guides the economy back to full employment output when any excess inflationary or deflationary gaps adjust input prices and expectations.

Wealth Effect

The wealth effect refers to the change in consumer spending that results from a change in the value of assets held by households. When households experience a decline in wealth, such as through a drop in stock market values, their consumption typically decreases, shifting the aggregate demand curve to the left. This reduction in aggregate demand can lead to lower output and price levels in the short run.

Short-Run Aggregate Supply Curve

The short-run aggregate supply (SRAS) curve shows the relationship between the aggregate price level and the quantity of goods and services that firms are willing to produce in the short run, holding some input prices fixed. In the short run, this curve is upward sloping because higher price levels provide an incentive for firms to increase production despite relatively sticky input costs, leading to temporary deviations from full employment output.

Aggregate Demand Curve

The aggregate demand (AD) curve represents the relationship between the aggregate price level and the total quantity of goods and services demanded in an economy. It is downward sloping, reflecting that as the price level falls, consumers' purchasing power increases, leading to higher consumption, investment, and net exports, and vice versa. Shifts in the AD curve occur due to changes in real wealth, interest rates, fiscal policy, and other factors influencing aggregate spending.

Long-Run Aggregate Supply Curve

The long-run aggregate supply (LRAS) curve represents the potential or full-employment level of output when all resources are optimally utilized. It is vertical, indicating that in the long run, the economy’s output is determined by factors such as technology, labor, and capital rather than by the price level. The LRAS curve reflects the economy's structural capacity and is not affected by short-term demand fluctuations.

Transcript

Please give Ace some feedback