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The balanced budget multiplier is positive it equals one , so the IS curve shifts right. An increase in government spending leads to an increase in output which tends to increase investment , but also to an increase in the interest rate which tends to reduce investment.
Since the multiplier is larger than the multiplier in part a , the effect of a change in autonomous spending is bigger than in part a.
An increase in autonomous spending now leads to an increase in investment as well as consumption. The multiplier as measured in part c measures the marginal effect of an increase in autonomous spending on equilibrium output.
As such, the multiplier is the sum of two effects: a direct effect of output on demand and an indirect effect of output on demand via the interest rate. The direct effect is equivalent to the horizontal shift of the IS curve. The indirect effect depends on the slope of the LM curve since the equilibrium moves along the LM curve in response to a shift of the IS curve and the effect of the interest rate on investment demand.
As this sum increases, the multiplier gets larger. Note that the slope of the LM curve becomes larger as money demand becomes more sensitive to income i. The IS curve shifts left. Output and the interest rate fall. The effect on investment is ambiguous because the output and interest rate effects work in opposite directions: the fall in output tends to reduce investment, but the fall in the interest rate tends to increase it.
To obtain the equilibrium interest rate, substitute for equilibrium Y from part b. A fall in G leads to a fall in output which tends to reduce investment and to a fall in the interest rate which tends to increase investment.
A monetary expansion reduces the interest rate and increases output. Consumption increases because output increases. Investment increases because output increases and the interest rate decreases. A fiscal expansion increases output and the interest rate. Investment is affected in two ways: the increase in output tends to increase investment, and the increase in the interest rate tends to reduce investment. In this example, these two effects exactly offset one another, and investment does not change.
Dig Deeper 5. Firms deciding how to use their own funds will compare the return on bonds to the return on investment. When the interest rate on bonds increases, bonds become more attractive, and firms are more likely to use their funds to purchase bonds, rather than to finance investment projects.
If the interest rate were negative, people would hold only money, and not bonds. Money would be a better store of value than bonds. See hint. The increase the money supply has little effect on the interest rate.
If the interest rate is actually zero, than the increase in the money supply literally has no effect. If there is no effect on the interest rate, which affects investment, monetary policy cannot affect output.
The reduction in T shifts the IS curve to the right. The increase in M shifts the LM curve down. The Clinton-Greenspan policy mix was loosely contractionary fiscal policy IS left and expansionary monetary policy LM down. In , there was a recession, which was triggered by a fall in investment spending following the decline in the stock market.
The events of September 11, which came after the recession had begun, had only a limited effect. In fact, the economy had positive growth in the fourth quarter of The expansionary monetary and fiscal policies tended to weaken the recession, but the policies came too late to avoid a recession.
The interest rate falls. Investment increases, since the interest rate falls while output remains constant. Consumption falls. The change in investment is ambiguous: the fall in output tends to reduce investment, but the fall in the interest rate tends to increase investment.
The change in private saving equals the change in investment. So, private saving could rise or fall in response to a fall in consumer confidence. The fall in G and the increase in T shift the IS curve to the left. The interest rate falls, and investment increases. Receipts rose, outlays fell, and the budget deficit fell. Subsequent changes in federal funds rate over the period are given below.
Investment was Over the period , the average annual growth rate of GDP per person was 2. Over the period first four years of the period, the average annual growth rate was 1. Investment had a bigger percentage change, and unlike consumption, growth in investment was negative for every quarter in and , except II. Overall investment was generally more variable than nonresidential fixed investment in and Moreover, nonresidential fixed investment had positive growth during , but negative growth in Investment had a substantially larger decline in its contribution to growth in and The proximate cause of the recession of was a fall in investment demand.
Investment fell in the last two quarters of , but began growing again in the first quarter of Consumption growth was slow for the first three quarters of , but grew rapidly in the fourth quarter. As mentioned in the text, the Fed reduced the federal funds rate several times during the fourth quarter of Moreover, automobile manufacturers offered large discounts. These actions may have helped to generate strong consumer spending. In any event, it is clear that the events of September 11 did not cause the recession of The recession had started well before these events.
The participation rate has increased over time. The increase in the markup lowers the real wage. Algebraically, from the wage-setting equation, the unemployment rate must rise for the real wage to fall. So the natural rate increases. Less production implies less demand for labor, so the natural rate rises.
Answers will vary. Most likely, the difference between your actual wage and your reservation wage will be higher for the job you will have ten years later. The later job is more likely to require training, which means you will be costly to replace, and will probably be a much harder job to monitor, which means you may need an incentive to work hard.
Efficiency wage theory suggests that your employer will be willing to pay a lot more than your reservation wage for the later job, to make the job valuable to you, so you will stay at it and work hard.
The computer network administrator has more bargaining power. She is much harder to replace. The rate of unemployment is the most important indicator of labor market conditions.
When the rate of unemployment increases, it becomes easier for firms to find replacements, and worker bargaining power falls. Since the price-setting relation depends on the actual price level and not the expected one, this relation holds in the short run and the medium run of our model 6. When the unemployment rate is very low, it is very difficult for firms to find workers to hire and very easy for workers to find jobs.
As a result, the bargaining power of workers is very high when the unemployment rate is very low. Therefore, the wage gets very high as the unemployment rate gets very low. Presumably, the real wage would grow without bound as the unemployment rate approached zero. Since a worker could always find a job, there would be nothing to constrain aggressive wage bargaining. At any positive rate of unemployment, however, there is some constraint on worker bargaining power.
The measured labor force and participation rate rise. Measured employment rises. Measured unemployment does not change, but the measured unemployment rate falls.
Measured GDP will rises. To adjust the labor market statistics, you would have to estimate the number of workers informally employed at home and add them to the measured employed. To the extent that workers employed informally at home were considered out of the labor force, counting these workers as employed would increase the size of the labor force. To adjust the GDP statistics, you would have to estimate the value-added of final goods produced at home. You could make comparisons to similar goods produced outside the home, or make comparisons to workers involved in similar industries outside the home, estimate the relevant wage and hours worked, and calculate value-added as the cost of labor, as is done for government services.
In either case, you need to calculate value- added, since intermediate goods—groceries, cleaning supplies, child care supplies, and so on—involved in the production of at-home goods are already counted in GDP as final goods in the formal sector.
Explore Further 8. Answers will depend on when the page is accessed. The decline in unemployment does not equal the increase in employment, because the labor force is not constant. Note that Pe must be known to graph the AS curve. There are changes in autonomous expenditure and supply shocks, both of which cause output to deviate from the natural level in the short run.
Fiscal policy affects the interest rate in the medium run and therefore affects investment. The natural level of output changes in response to a permanent supply shock other than a change in Pe.
The price level changes in the medium run in response to either a demand or a supply shock. IS shifts right, and LM shifts up. AD shifts right, and AS shifts up. Y returns to its unchanged natural level. The interest rate and the price level increase. Money is neutral in the sense that the nominal money supply has no effect on output or the interest rate in the medium run. Output returns to its natural level. The interest rate is determined by the position of the IS curve and the natural level of output.
Despite the neutrality of money in the medium run, an increase in the money supply will increase output and reduce the interest rate in the short run. Therefore, expansionary monetary policy can be used to speed up the economy's return to the natural level of output when output is low.
In the medium run, fiscal policy affects the interest rate and investment, so fiscal policy is not considered neutral. Labor market policies, such as the degree of unemployment insurance, can affect the natural level of output. Y i P SR falls falls falls MR back to falls falls original Yn further further C I Private S SR falls ambiguous ambiguous MR back to rises above rises above original original original level level level The short-run change in investment is ambiguous, because the interest rate falls, which tends to increase investment, but output also falls, which tends to reduce investment.
In the medium run, investment must rise as compared to its short-run and original levels , because the interest rate falls but output returns to its original level.
Since the budget deficit does not change in this problem, the change in private saving equals the change in investment. It is possible that private saving will fall in the short run, but private saving must rise above its short-run and original levels in the medium run. Open answer. Firms may be so pessimistic about sales that they do not want to borrow at any interest rate. The IS curve is vertical; the interest rate does not affect equilibrium output.
The LM curve is unaffected. The AD curve is vertical; the price level does not affect equilibrium output. The increase in z reduces the natural level of output and shifts the AS curve up. Since the AD curve is vertical, equilibrium output does not change, but the price level increases. Note that output is above its natural level. Therefore, Pe rises and theAS curve shifts up. In fact, the AS curve shifts up forever, and the price level increases forever.
Output does not change; it remains above its natural level forever. The IS slopes down as before. Arguably, the IS curve is undefined for nominal interest rates below zero. Eventually, when P falls far enough, the nominal interest reaches zero. For levels of P below this threshold, the AD curve is vertical.
There is no effect on output in the short run or the medium run. Since the money stock does not affect the interest rate, it does not affect output. The AD curve shifts left in the short run.
Output and the price level fall in the short run. In the medium run, the expected price level falls, and AS shifts right, returning the economy to the original natural level of output, but at a lower price level. The unemployment rate rises in the short run, but returns to its original level the natural rate, which is unchanged in the medium run. The Fed should increase the money supply, which shifts the AD curve right. A monetary expansion of the proper size exactly offsets the effect of the decline in business confidence on the AD curve.
The net effect is that the AD curve does not move in the short run or medium run, and neither does the AS curve. Under the policy option in part c , output and the price level are higher in the short run. In the medium run, output is the same in parts a and c , but the price level is higher in part c. The unemployment rate is lower in the short run in part c. In the medium run, the unemployment rate is the same in parts b and c.
The AS curve shifts up in the short run and shifts up further in the medium run. Output falls in the short run and falls further in the medium run.
The price level rises in the short run and rises further in the medium run. The unemployment rate rises in the short run and rises further in the medium run. The Fed could increase the money supply in the short run and shift the AD curve to the right.
The AS curve would shift up over time. Output and the price level are higher in the short run in part c. Output is the same in the medium run in parts a and c , but the price level is higher in part c. The unemployment rate in the short run is lower in part c , but the same in the medium run in parts a and c. It has to distinguish changes in the actual rate of unemployment from changes in the natural rate of unemployment.
The Fed can use monetary policy to keep the unemployment rate near the natural rate, but it cannot affect the natural rate. The real wage falls immediately to its new medium-run level. The unemployment rate falls in the short run but returns to the original natural rate in the medium run. The real wage is unaffected. However, after tax income rises. In our model, the real wage depends only upon the markup. A fall in the markup increases the real wage.
Policy measures that improve product market competition—for example, more vigorous anti-trust enforcement—could increase the real wage.
The fall in income taxes tended to increase the after-tax real wage. The increase in oil prices tended to reduce the after-tax real wage. Intuitively, the immediate effect of an oil price increase is to reduce the real wage by increasing gas prices. Thus, the increase in gas prices tends to absorb the extra after-tax income provided by the tax cut. The AS curve slopes up in Y-P space. An increase in x implies that F must fall to maintain the equality.
F falls when u rises. So, an increase in the relative price of energy resources leads to an increase in the natural rate of unemployment. The unemployment rate and the price level rise in the short run and rise further in the medium run. An increase in the relative price of energy resources causes the AS curve to shift up in the short run.
If Pe remains constant, the AS curve will not shift further after the initial, short- run shift. In order for Pe to remain constant, wage setters must be expecting the Fed to reduce the money supply, thereby shifting the AD curve left.
This monetary policy moves output to its new, lower natural level right away, and maintains the original price level, so there will be no price adjustment in the transition to the new medium-run equilibrium.
The 70s, 80s, and 90s look remarkably similar. The 60s had by far the highest growth. Clearly, the first decade of the 21st century will have the lowest growth. Note, although the problem did not ask for the growth rates of GDP per person, the ranking of the decades would be similar. The growth rates of GDP per person are given below.
In the s, we experienced high inflation and high unemployment. The expectations-augmented Phillips curve is a relationship between inflation and unemployment conditional on the natural rate and inflation expectations. Given inflation expectations, when the natural rate of unemployment increases i. In addition, increases in inflation expectations imply higher inflation for any level of unemployment. In the s, both the natural rate and expected inflation increased, so both unemployment and inflation were relatively high.
However, increases in inflation expectations may tend to increase short run output from the demand side, because of the real interest rate effect. The real interest rate is introduced in Chapter The expectations-augmented Phillips curve implies that maintaining a rate of unemployment below the natural rate requires not merely high inflation but increasing inflation.
This is because inflation expectations continue to adjust to actual inflation. Inflation expectations will be forever wrong. This is unlikely. Inflation increases by four percentage points every year. Inflation expectations will again be forever wrong. A higher cost of production means a higher markup of the price level over wages. In the simple model of the text, the markup reflects all nonwage components of the price of a good. As indexation increases, inflation becomes more sensitive to the difference between the unemployment rate and the natural rate.
The average rate of unemployment was lower in the s. Indeed, even though the unemployment rate was at a historical low, inflation rose very little. The natural rate of unemployment probably decreased.
The relationships imply a lower natural rate in the more recent period. The unemployment rate rises when output growth is less than the normal rate and rises when output growth is greater than the normal rate.
The Phillips curve relates the change in inflation to the difference between the unemployment rate and the natural rate. The aggregate demand relation equates inflation to real money growth. It is true that the aggregate demand relation implies that inflation equals adjusted money growth, which is the difference between money growth and output, but this is only a relation between inflation and output growth conditional on money growth. In the medium run, inflation equals adjusted money growth, which is the difference between nominal money growth and output growth.
In principle, the statement is true, but nominal rigidities may make even fully credible policy costly. Absent output growth, productivity growth tends to increase the unemployment rate, since fewer workers are required to produce a given quantity of goods.
Absent output growth, labor force growth also tends to increase the unemployment rate, since more workers are competing for the same number of jobs. Therefore, unemployment will increase unless the growth rate exceeds the sum of productivity growth and labor force growth. For the unemployment rate to decrease by 0. Assume the economy has been at the natural rate of unemployment for two years this year and last year. See text for full answer. Gradualism reduces the need for large policy swings, with effects that are difficult to predict, but immediate reduction may be more credible and encourage rapid, favorable changes in inflation expectations.
Nevertheless, the staggering of wage decisions suggests that a gradual disinflation—as long as it is credible—is the option consistent with no change in the unemployment rate. The answer is not clear. Based in Ball's evidence, a fast disinflation probably results in a lower sacrifice ratio, depending on the features listed in part c.
Relevant features include the degree of indexation, the nature of the wage-setting process, and the initial rate of inflation. Inflation will start increasing. It should let unemployment increase to its new, higher, natural rate. Dig Deeper 6. Take measures to enhance credibility. Inflation does not decline smoothly. In the early years, the large unemployment rates relative to the natural rate reduce inflation to negative values. In this example, money growth equals the normal growth rate of output, so negative inflation drives real money growth and hence output growth above the normal output growth rate, and unemployment falls.
Eventually, when unemployment falls below the natural rate, inflation begins to increase again. These cycles continue, with decreasing amplitude. The unemployment rate increased from 5.
Therefore, growth was too low to prevent the unemployment rate from rising. Employment fell. Productivity grew. Actually, according to non-seasonally adjusted data, the level of unemployment fell in five months of , although it rose over the entire year.
Nevertheless, in several months in which the level of unemployment rose e. Update now to V And now he is giving you the key to that depth: his entire suite of reverbs and delays, in one epic plugin.
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