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Unit 4

Macro Economics
Introduction
• Great depression of 1920-40 has brought the
  significance of creating Macro Economics.
• Macro Economics as a separate branch of
  Economics came in 1936 by John Keynes
  publications.
• It led for the emergence of Keynesian
  revolution to meet the need of modern day
  economies.
Keynesian Theory
• It states that employment is a function of
  income.
• Employment & Income is determined by the
  level of effective demand, national income,
  interest rates, consumption etc…
• But in a country, inflationary & deflationary
  gaps exists which prevents the growth of
  economy.
Inflationary & Deflationary Gap
• Inflationary gap occurs when consumption &
  investment expenditures are greater than the
  full employment, this gap arises.
• Here consumer demand for goods & services
  are greater than its supply.
• Hence under this condition NI, output,
  employment cannot be increased further.
• Where as Deflationary Gap occurs when total
  demand fails to create full employment.
Macro Economics
• Samuelson defines Macro Economics as “the
  study of thee behaviour of the economy as a
  whole. It examines the overall level of a
  nation’s output, employment, prices and
  foreign trade”.
• In simple words, Macro economics theory is
  the theory of income, employment, prices and
  money.
Static & Dynamic economies
• In a Static economy, normal economic activities
  go on but there is no change in the size of
  economy, national output, stock of capital,
  prices, technology, population taste &
  preferences, nature of business & employment.
• In a Dynamic economy, the country will always
  be in motion, forces of change are instant &
  simultaneous.
Employment model
• The classical employment model consists of
  two components. They are:
1. Aggregate production function
2. Labour supply & demand function
• These components display the real output &
   employment required to produce equilibrium
   level of national output under the given
   money supply.
Aggregates under Keynesian model
•   Aggregate supply function
•   Aggregate demand function
•   Aggregate consumption function
•   Aggregate saving function
•   Investment
• Aggregate supply function is the total supply
  of goods in the economy. In SR, it is the
  function of number of labour reqd for prodn.
• Aggregate demand function depends on
  demand for consumer goods & investment
  goods in a two sector economy.
• Aggregate consumption function is the
  consumption expenditure of household
  depends upon the income of the household.
• Investment happens in the three sector
  economy.
Circular flow of money
• Flow of money can happen in different sectors
  of the economy. They are:
1. Two sector economy – consists of Firms &
   households.
2. Three sector economy – consists of Firms,
   households & Government.
3. Four sector economy – Firms, households,
   Government & International markets.
Theory of Interest
• Interest is the opportunity cost of holding money.
• It is the premium which has to be offered to
  induce people to hold their wealth in some form
  other than hoarded (accumulated) money.
• Rate of interest is determined by demand for and
  supply of money.
• The desire of people to hold money is called
  liquidity preference.
• Money is held for meeting various transaction,
  precautionary and speculative motives.
Macro economic problems
•   Overall Growth rate of the economy
•   Unemployed labour force
•   People living below poverty line
•   Inflation
•   Balance of payment
•   Fiscal & monetary policies
•   Industrial development
•   Balanced sectoral development etc..

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Unit 4 macro eco

  • 2. Introduction • Great depression of 1920-40 has brought the significance of creating Macro Economics. • Macro Economics as a separate branch of Economics came in 1936 by John Keynes publications. • It led for the emergence of Keynesian revolution to meet the need of modern day economies.
  • 3. Keynesian Theory • It states that employment is a function of income. • Employment & Income is determined by the level of effective demand, national income, interest rates, consumption etc… • But in a country, inflationary & deflationary gaps exists which prevents the growth of economy.
  • 4. Inflationary & Deflationary Gap • Inflationary gap occurs when consumption & investment expenditures are greater than the full employment, this gap arises. • Here consumer demand for goods & services are greater than its supply. • Hence under this condition NI, output, employment cannot be increased further. • Where as Deflationary Gap occurs when total demand fails to create full employment.
  • 5. Macro Economics • Samuelson defines Macro Economics as “the study of thee behaviour of the economy as a whole. It examines the overall level of a nation’s output, employment, prices and foreign trade”. • In simple words, Macro economics theory is the theory of income, employment, prices and money.
  • 6. Static & Dynamic economies • In a Static economy, normal economic activities go on but there is no change in the size of economy, national output, stock of capital, prices, technology, population taste & preferences, nature of business & employment. • In a Dynamic economy, the country will always be in motion, forces of change are instant & simultaneous.
  • 7. Employment model • The classical employment model consists of two components. They are: 1. Aggregate production function 2. Labour supply & demand function • These components display the real output & employment required to produce equilibrium level of national output under the given money supply.
  • 8. Aggregates under Keynesian model • Aggregate supply function • Aggregate demand function • Aggregate consumption function • Aggregate saving function • Investment
  • 9. • Aggregate supply function is the total supply of goods in the economy. In SR, it is the function of number of labour reqd for prodn. • Aggregate demand function depends on demand for consumer goods & investment goods in a two sector economy. • Aggregate consumption function is the consumption expenditure of household depends upon the income of the household. • Investment happens in the three sector economy.
  • 10. Circular flow of money • Flow of money can happen in different sectors of the economy. They are: 1. Two sector economy – consists of Firms & households. 2. Three sector economy – consists of Firms, households & Government. 3. Four sector economy – Firms, households, Government & International markets.
  • 11. Theory of Interest • Interest is the opportunity cost of holding money. • It is the premium which has to be offered to induce people to hold their wealth in some form other than hoarded (accumulated) money. • Rate of interest is determined by demand for and supply of money. • The desire of people to hold money is called liquidity preference. • Money is held for meeting various transaction, precautionary and speculative motives.
  • 12. Macro economic problems • Overall Growth rate of the economy • Unemployed labour force • People living below poverty line • Inflation • Balance of payment • Fiscal & monetary policies • Industrial development • Balanced sectoral development etc..