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Macro economic policy debates


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Macro economic policy debates

  1. 1. 4/19/2014 1
  2. 2. Content….. • What’s macro economics • Introduction of macro economic policy debates • Classical & Keynesian view on;  unemployment Price stability Exchange rate • Conclusion 4/19/2014 2
  3. 3. MACRO ECONOMICS • Macro economics concern with the behavior of the aggregate economy as a whole. Therefore it deals inter related broad system.
  4. 4. Macroeconomics is a branch of economics dealing with the performance, structure, Behavior and decision-making of the whole economy. This includes a national, regional or global economy.
  5. 5. Some Macro Economic Economists  Classical economists: Adam Smith( Scottish philosopher) Alfred Marshall(British economist) Arthur Cecil Pigou (British economist) David Ricardo (British economist) JS.Mill Malthus
  6. 6. Keynesian economists: • Francis Ysidro Edge Worth • Jean-Baptist Say • Paul Samuelson • John Maynard Keynes
  7. 7. 4/19/2014 7
  8. 8. Macroeconomic policy debates inevitably revolve around discussion of fluctuations in key aggregate measures notably, national income, interest rates, inflation, unemployment, trade imbalances, exchange rates and various wealth series, 4/19/2014 8
  9. 9. But here we only discuss three things, a.Un employment b.Price stability c.Exchange rate 4/19/2014 9
  10. 10. Macroeconomics emerged as a separate subject within economics in the 1930s, when the U.S. economy fell into the Great Depression. 4/19/2014 10
  11. 11. Before the 1930s, economics was microeconomics (the study of partial-equilibrium supply and demand).
  12. 12. After the 1930s, the study of the core of economic thinking was broken into two discrete areas: microeconomics, as before, and macroeconomics (the study of the economy in the aggregate).
  13. 13. Macroeconomic policy debates have centered on a struggle between two groups: Keynesian economists and Classical economists. 4/19/2014 13
  14. 14. Classical economists generally oppose government intervention in the economy; they favor a laissez-faire policy.
  15. 15. Keynesians are more likely to favor govern government intervention in the economy. They feel a laissez-faire policy can sometimes lead to disaster. Both views represent reasonable economic positions.
  16. 16. MACROECONOMIC OBJECTIVES We begin our discussion by focusing on the objectives of macro-economic policymaking. At the most general level, the goal of economic policy is to maximize long-run societal well-being in an equitable and sustainable manner. 4/19/2014 16
  17. 17. Much of the recent discussion of economic policy has focused on intermediate variables, such as price stability or the balance of payments. 4/19/2014 17
  18. 18. Their importance derives largely from their role as possible indicators of economic performance in terms of truly significant such as growth, development and equity. 4/19/2014 18
  19. 19. The centre of attention of macroeconomic policymaking should be on ‘real macroeconomics’ and the use of productive capacity—the employment of capital and labour at their highest potential level—and improvements in that productivity. 4/19/2014 19
  20. 20. Macro economics policy debates on Unemployment Definition: •Unemployment is inability for willing workers to find gainful employment. •Unemployment occurs when a person who is actively searching for employment is unable to find work. •Unemployment occurs when people are without work & actively seeking work. 4/19/2014 20
  21. 21. The Unemployment Rate: Unemployment Rate= Unemployed x100 Labor Force Types of unemployment: •Frictional Unemployment •Seasonal Unemployment •Cyclical Unemployment 4/19/2014 21
  22. 22. Classical debates on unemployment: •According to classical economists the labor &the other resources are always fully employed. •General unemployment is assumed to be impossible. •If there is any unemployment, it is assumed to be temporary/ abnormal. •In the long run the economy will have full employment/natural rate of unemployment if wages & prices are flexible. 4/19/2014 22
  23. 23. •Classical reasons for full employment: 1. Say’s law: Supply creates its own demand. 2. Abstinence theory of interest: Interest rate influences people’s saving. 3. Classical theorists held that wages & prices would change proportionally •Graphically the pure classical theorists would have a vertical AS curve. That shows the same GDP associated with full employment, at each level in the economy. 4/19/2014 23
  24. 24. (graph1)
  25. 25. •According to classical economists the reasons for unemployment are: 1.Intervention by the government/private monopoly. 2. Wrong calculation by entrepreneurs & inaccurate decisions 3.Artificial resistance 4/19/2014 25
  26. 26. •Classical unemployment occurs when real wages are kept above the market clearing wage rate, leading to a surplus of labor supplied •Classical unemployment sometimes known as real wage unemployment. Because it refers to real wages being too high.
  27. 27. 4/19/2014 27 Wage rate D W2 S W1 Q2 Q1 Q3 Aggregate Output (graph2) Classical Unemployment=Q3-Q2.
  28. 28. Keynesian debate on unemployment: •The most forceful critic of the classical model was John Maynard Keynes, a British economist. His major work, entitled The General Theory of Employment, Interest, and Money, was first published in 1936. 4/19/2014 28
  29. 29. •Keynesian theory holds that unemployment is the normal state of the economy & significant government intervention is required if employment/output targets are to be reached.
  30. 30. •In this view AS curve is Horizontal. 4/19/2014 30
  31. 31. •The classical economists argue that if wages were more flexible then most unemployment could be solved. 4/19/2014 31
  32. 32. However, Keynesian economists argue it is not as straightforward. They argue the problem may be a lack of AD in the economy.
  33. 33. EX: If wages are cut, it could lead to further fall in AD, as workers have lower wages. In this case, cutting wages may be ineffective in solving classical unemployment.
  34. 34. •Keynesian critique of classical theories: 1. Say’s law: Whereas the classical economists believed that supply created its own demand, Keynes argued that causation ran the other Way —from demand to supply. There are many ways to increase Demand more effectively than to push for more output to be produced. 4/19/2014 34
  35. 35. 2. Abstinence theory: Keynes argued that investors & savers have different motivations.
  36. 36. 4/19/2014 36 •Central Keynesian conclusion: 1. AD determines real GDP 2. In short run, AD can be adjusted to achieve target GDP & unemployment levels with prices not changing (fixed, flat price)
  37. 37. PRICE STABILITY • Keynesian different from classical. • The classical assumed that full employment of resources in the economy. • Keynesian assumed that there is no full employment. 4/19/2014 37
  38. 38. According to them, if at anytime there is deviation from this full employment level, the wages, interest and prices quickly and automatically adjust/ change to restore equilibrium at the full employment level. •
  39. 39. Thus ,in the classical theory the as curve of output is perfectly inelastic(vertical straight line)at the output level corresponding to full-employment level of resources.
  40. 40. • It shown below the graph AS price level Yf aggregate output
  41. 41. • Keynes consider the situation of economic depression when the economy was operating before the level of full employment of resources.
  42. 42. • He expressed the As curve as horizontal line, it shown below,
  43. 43. • The classical says if the economy prevails in fullemployment.there is an increasing in AD. so the price level is automatically change. it will goes up. because cannot be further increasing in output.
  44. 44. AS P2 P1 AD AD1 Yf
  45. 45. • But the Keynesian refused this. he believed that there is no full employment level. so to expand the out put can utilized the more resources. Therefore output level is increased (o-y) without increasing cost of production. So the price level is not changed.
  46. 46. conclusion • According to Keynes price and wages are stable but output and employment will change
  47. 47. • The classical didn’t accepted and they agree with flexible prices. They said output and employment are stable but prices and wages will change.
  48. 48. Exchange Rate • It is a one of the macro Economics variables. • It means the prices at which one currency can purchased in terms of some other currency is the exchange rate between the two countries.
  49. 49. • Macro economic variable determines depends on the choice of the underlying macro Economic model
  50. 50. It has a two criteria • 1. By recognizing that the existing macro economic modal for open economies are still rather simple in comparison to those of a closed economy.
  51. 51. • 2. One country model are used for small open economies , Where foreign variables are considered as a given and two country model are contracted. When domestic and foreign macro economic variable are interdependent.
  52. 52. • The open economy consist the exchange rate model, include the fixed and floating exchange rates.
  53. 53. • Under the exchange rate we observe the two approach. 1. Classical approach 2. Keynesian approach
  54. 54. Keynesian and classical frame works are similar with respect to this transmission mechanism. Keynesian model consist • The foreign country will realize a decrease of it real national income. There will be a rise in the real exchange rate.
  55. 55. Classical Model Consist • The foreign country will observe a fall in its general price level.
  56. 56. What factors effects the classical and Keynesian exchange of currency? • Factors of classical exchange rate of currency • Own country want to import goods from the abroad, they are demanding foreign currency • In order to get these foreign currency , they have to sell own currency
  57. 57. • Now the own country currency value against the foreign currency is low therefore . the imports will be expensive ii. Investment in the foreign country will be un attractive iii. The demand for foreign currency will be low and will the supply of own country
  58. 58. • The exchange rate rises imports will be more attractive
  59. 59. • The own country will be more interest rate in foreign country investment opportunities
  60. 60. • The quantity of foreign currency demanded , thus the quantity of own country currency supplied will rise
  61. 61. Factors of Keynesian exchange rate of currency • The supply curve of own country currency slopes upwards to the right as do the supply curve for most commodities. By similar reasoning the demand curve for own country currency slopes down ward.
  62. 62. • As we said before, this is a simple application of demand and supply analysis. variations in exchange rate are associated with variations in quantity demanded and supplied.
  63. 63. • There is an equilibrium exchange rate at which the quantity of a currency supplied is equal to the quantity demanded.
  64. 64. • One major cause of instability is a divergence in monetary policy between the countries • The exchange rate often shows periods of great instability with large up and down movements.
  65. 65. • Above the situations are change the exchange rate. • The Keynesian two countries model has been developed mainly by Mundell (1968) and popularized on a more comprehensive level.
  66. 66. • He explained the exchange rate according to the fiscal and monetary policies. • He explain through this instruments. • When changing the government expenditure ,changes in taxes and changes in the interest rate are changed the exchange rates