Aggregate Demand Supply

Description
This is a presentation about macroeconomic objectives of the country, circular flow of income, national income measurement, types of inflation.

Aggregate Demand and Supply and Macroeconomic Problems

Macroeconomic Objectives
• Distinction between microeconomics and macroeconomics • The major macroeconomic issues
– economic growth – unemployment – inflation – balance of payments and exchange rates
• balance of payments deficits and surpluses

• exchange rate movements

Economic growth (average % per annum), Unemployment (average %), Inflation (average % per annum)
France Germany Growth 1960-9 1970-9 1980-9 1990-9 Unemployment 1960-9 1970-9 1980-9 1990-9 Inflation 1960-9 1970-9 1980-9 1990-9 Italy Japan UK USA EU(15) India

Brazil Ma

7.5 3.2 2.2 1.7

4.4 2.6 1.8 2.1

5.3 3.8 2.4 1.4

10.9 4.3 4.0 1.3

2.9 2.0 2.4 2.2

4.3 2.8 2.5 3.3

3.5 3.2 2.2 1.9

2.5 3.5 5.5 6.9

5.4 8.1 3.0 3.2

1.5 3.7 9.0 11.2

0.9 2.3 5.9 7.5

5.1 6.4 9.5 10.6

1.3 1.7 2.5 3.0

2.2 4.5 10.0 5.8

4.1 6.1 7.2 5.8

2.5 4.0 9.3 9.9

n/a n/a n/a

n/a n/a n/a n/a

4.2 9.4 7.3 1.9

3.2 5.0 2.9 2.5

4.4 13.9 11.2 3.9

4.9 9.0 2.5 1.1

4.1 13.0 7.4 3.5

2.8 6.8 5.5 2.8

3.7 10.3 7.4 3.2

9.1 19.2 8.9 6.9

46.1 38.6 227.8 300.9

The Circular Flow of Income
• The inner flow

The circular flow of income Firms

Factor payments

Consumption of domestically produced goods and services (Cd)

Households

The Circular Flow of Income
• Withdrawals
– net saving
– net taxes

– import expenditure

• Injections
– investment
– government expenditure

– export expenditure

The circular flow of income
INJECTIONS
Export expenditure (X) Investment (I) Government expenditure (G) BANKS, etc GOV. ABROAD

Factor payments

Consumption of domestically produced goods and services (Cd)

Net saving (S)

Import Net expenditure (M) taxes (T)

WITHDRAWALS

The Circular Flow of Income
• The relationship between injections and withdrawals
– the links between them

The circular flow of income
INJECTIONS
Export expenditure (X) Investment (I) Government expenditure (G) BANKS, etc GOV. ABROAD

Factor payments

Consumption of domestically produced goods and services (Cd)

Net saving (S)

Import Net expenditure (M) taxes (T)

WITHDRAWALS

The Circular Flow of Income
• The relationship between injections and withdrawals
– the links between them – planned injections may not equal planned withdrawals

The Circular Flow of Income
• The relationship between injections and withdrawals
– the links between them – planned injections may not equal planned withdrawals

• Equilibrium in the circular flow

The circular flow of income
INJECTIONS
Export expenditure (X) Investment (I) Government expenditure (G) BANKS, etc GOV. ABROAD

Factor payments

Consumption of domestically produced goods and services (Cd)

Net saving (S)

Import Net expenditure (M) taxes (T)

WITHDRAWALS

The Circular Flow of Income
• The relationship between injections and withdrawals
– the links between them – planned injections may not equal planned withdrawals

• Equilibrium in the circular flow • The circular flow and the four macroeconomic objectives

The circular flow of income
INJECTIONS
Export expenditure (X) Investment (I) Government expenditure (G) BANKS, etc GOV. ABROAD

Factor payments

Consumption of domestically produced goods and services (Cd)

Net saving (S)

Import Net expenditure (M) taxes (T)

WITHDRAWALS

Measuring national income
• GDP: the measure of national income • Methods of measuring GDP
– the product approach – the income approach – the expenditure approach

• The product approach
– measuring GVA

INDIA GDP product-based measure: 2004-05 (Rs crore)
Agriculture, forestry and fishing Rs 598163 Mining and Quarrying Rs 79962 19.70 2.63

Manufacturing Rs 455789
Construction Rs 174571 Wholesale and retail trade Rs 350421

15.01 5.75 11.54

Percentage of GVA

Hotels and restaurants Rs 26097
Transport Storage and communication Rs 202079 Banking, finance, insurance, etc. Rs 163218 Real estate and dwelling Rs 308370 Public administration and defence 140467 Community and Personal services 338591 Other services 198124

0.85 6.65

5.37 10.15 4.62 11.15 6.52 100.0

Gross value added (GVA) at basic prices

Rs 3035852

Measuring national income
• GDP: the measure of national income • Methods of measuring GDP
– the product approach – the income approach – the expenditure approach

• The product approach
– measuring GVA

• The income approach

GVA by category of income: 2004-05

Compensation of employees (wages and salaries) Rs 960982

31.65

Percentage of GVA

Operating surplus (gross profit, rent and interest of firms government and other institutions) Rs 1286451 Mixed incomes Rs 478103 Tax less subsidies on production plus statistical discrepancy Rs 310315 Gross value added (GVA) at basic prices Rs 3035852

42.37

15.8

10.22

100.0

Measuring national income
• GDP: the measure of national income • Methods of measuring GDP
– the product approach – the income approach – the expenditure approach

• The product approach
– measuring GVA

• The income approach
– from GVA to GDP

GDP: 2004-05

Gross value added (GVA) at basic prices Rs 3035852

GDP: 2004-05

Gross value added (GVA) at basic prices Rs 3035852 plus Taxes on products Rs 432549

GDP: 2004-05

Gross value added (GVA) at basic prices Rs 3035852 plus Taxes on products less Subsidies on products Rs 432549 Rs 121434

GDP: 2004-05

Gross value added (GVA) at basic prices Rs 3035852 plus Taxes on products less Subsidies on products Rs 432549 Rs 121434

GDP (at market prices)

Rs 3589835

Measuring national income
• GDP: the measure of national income • Methods of measuring GDP
– the product approach – the income approach – the expenditure approach

• The product approach
– measuring GVA

• The income approach • The expenditure approach

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households 2296757 % of GDP 63.6

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households Government final consumption (G) 405945 11.3 2296757 % of GDP 63.6

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households Government final consumption (G) 405945 Gross capital formation (I) 945403 26.3 11.3 2296757 % of GDP 63.6

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households and Government final consumption (G) 405945 Gross capital formation (I) 945403 Exports of goods and services (X) 861560 Imports of goods and services (M) –920074 –25.6 24 26.3 11.3 2296757 % of GDP 63.6

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households Government final consumption (G) 405945 Gross capital formation (I) 945403 Exports of goods and services (X) 861560 Imports of goods and services (M) –920074 Statistical discrepancy 243.75 0.006 –25.6 24 26.3 11.3 2296757 % of GDP 63.6

GDP at market prices by category of expenditure: 2004-05
Rs crores Consumption expenditure of households Government final consumption (G) 405945 Gross capital formation (I) 945403 Exports of goods and services (X) 861560 Imports of goods and services (M) –920074 Statistical discrepancy 243.75 GDP at market prices 3589835 0.006 100.0 –25.6 24 26.3 11.3 2296757 % of GDP 63.6

Measuring national income
• • • • • GDP: the measure of national income The product approach The income approach The expenditure approach From GDP to net national income (NNY)

GDP, GNP and NNY at market prices: 2004-05

Rs crore Gross domestic product (GDP) Plus net income from abroad Gross national income (GNP) 3589835 -18310 3571524

GDP, GNP and NNP at market prices: 2004-05

Rs crore Gross domestic product (GDP) Plus net income from abroad Gross national income (GNY) Less capital consumption (depreciation) Net national income (NNY) 3589835 -18310 3571524 329893 3241630

Economic Growth and the Business Cycle
• Growth in actual and potential output

• Economic growth and the business cycle
– fluctuations in actual growth

The business cycle

Potential output

National output

Actual output

O

Time

Economic Growth and the Business Cycle
• Growth in actual and potential output
• Economic growth and the business cycle
– fluctuations in actual growth – the phases of the business cycle

The business cycle

Potential output

National output

3 3 4 2 1 1 2 4 Actual output

O

Time

Economic Growth and the Business Cycle
• Growth in actual and potential output
• Economic growth and the business cycle
– fluctuations in actual growth – the phases of the business cycle – trend growth

The business cycle

Potential output

National output

Trend output

Actual output

O

Time

Economic Growth and the Business Cycle
• Economic growth and the business cycle
– fluctuations in actual growth
– the phases of the business cycle

– trend growth
– the business cycle in practice

Economic Growth and the Business Cycle
• Economic growth and the business cycle
– fluctuations in actual growth
– the phases of the business cycle

– trend growth
– the business cycle in practice
• the irregularity of the cycle

Economic Growth and the Business Cycle
• Economic growth and the business cycle
– fluctuations in actual growth
– the phases of the business cycle

– trend growth
– the business cycle in practice
• the irregularity of the cycle
• the length of the phases

Economic Growth and the Business Cycle
• Economic growth and the business cycle
– fluctuations in actual growth
– the phases of the business cycle

– trend growth
– the business cycle in practice
• the irregularity of the cycle
• the length of the phases

• the magnitude of the phases

Economic Growth and the Business Cycle
• Causes of actual growth
– aggregate demand

– aggregate demand relative to potential output

• Actual growth in practice
– experience since 1970

Growth rates in selected industrial countries
10 9

UK

Annual growth rate (%)

8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

Growth rates in selected industrial countries
10 9

UK

Annual growth rate (%)

8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany USA

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany USA

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany USA

India

Annual growth rate (%)

Growth rates in selected industrial countries
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 1970 1975 1980 1985 1990 1995 2000

UK France

Germany USA

India

Annual growth rate (%)

Economic Growth and the Business Cycle
• Causes of potential growth
– increases in the quantity of factors
• • • • capital labour land and raw materials the problem of diminishing returns

– increases in factor productivity

• Policies to achieve growth
– demand-side and supply-side policies – market-orientated & interventionist policies

Unemployment
• The meaning of 'unemployment'
• Types of Unemployment
– standardised unemployment (ILO/OECD)

Flows into and out of unemployment
From jobs

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time)

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time)

•People taking new jobs

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time)

•People taking new jobs •People returning to old jobs who had been temporarily laid off

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time) To outside the labour force

•People taking new jobs •People returning to old jobs who had been temporarily laid off

•People who have become disheartened and give up looking for a job

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time) To outside the labour force

•People taking new jobs •People returning to old jobs who had been temporarily laid off

•People who have become disheartened and give up looking for a job •People who have reached retirement age

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time) To outside the labour force

•People taking new jobs •People returning to old jobs who had been temporarily laid off

•People who have become disheartened and give up looking for a job •People who have reached retirement age •People who temporarily withdraw from labour force (e.g. to raise a family)

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time) To outside the labour force

•People taking new jobs •People returning to old jobs who had been temporarily laid off

•People who have become disheartened and give up looking for a job •People who have reached retirement age •People who temporarily withdraw from labour force (e.g. to raise a family) •People who emigrate

Flows into and out of unemployment
From jobs
•People made redundant •People sacked •People temporarily laid off •People resigning

From outside the labour force
•School/college leavers •People returning to the labour force (e.g. after raising children)

INFLOWS (per period of time)

UNEMPLOYMENT To jobs OUTFLOWS (per period of time) To outside the labour force

•People taking new jobs •People returning to old jobs who had been temporarily laid off

•People who have become disheartened and give up looking for a job •People who have reached retirement age •People who temporarily withdraw from labour force (e.g. to raise a family) •People who emigrate •People who die

Unemployment
• Unemployment and the labour market
– the aggregate demand and supply of labour

– equilibrium in the model

Aggregate demand and supply of labour

ASL
Average (real) wage rate

We

ADL
O Qe

No. of workers

Unemployment
• Unemployment and the labour market
– the aggregate demand and supply of labour
– equilibrium in the model

– disequilibrium unemployment

Disequilibrium unemployment

ASL
Average (real) wage rate

B W2

A

We

ADL
O Q
2

Q

No. of workers

1

Unemployment
• Unemployment and the labour market
– the aggregate demand and supply of labour – equilibrium in the model – disequilibrium unemployment – equilibrium unemployment

Equilibrium unemployment
ASL
Average (real) wage rate

e

We

ADL
O Qe

No. of workers

Equilibrium unemployment
ASL N
Average (real) wage rate

e

We

d

ADL
O Qe Q2

No. of workers

Equilibrium and disequilibrium unemployment

ASL
Average (real) wage rate

e

We

ADL
O Qe

No. of workers

Equilibrium and disequilibrium unemployment

ASL
Average (real) wage rate

Disequilibrium unemployment

b W2 e

a

We

ADL
O

No. of workers

Equilibrium and disequilibrium unemployment

ASL
Average (real) wage rate

Disequilibrium unemployment

N

b W2 e

a

c

We

Equilibrium unemployment

ADL
O

No. of workers

Unemployment
• Disequilibrium unemployment
– real-wage (classical) unemployment

– demand-deficient (cyclical) unemployment
– unemployment arising from a growth in the labour supply

Unemployment
• Equilibrium unemployment
– frictional (search) unemployment – structural unemployment
• changing pattern of demand
• technological unemployment • regional unemployment

– seasonal unemployment

Aggregate Demand and Supply
• The aggregate demand curve

Aggregate demand and aggregate supply

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect

Aggregate demand and aggregate supply

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect • interest-rate effect

Aggregate demand and aggregate supply

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect

• interest-rate effect
• savings effect

Aggregate demand and aggregate supply

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect • interest-rate effect • savings effect

• The aggregate supply curve

Aggregate demand and aggregate supply
AS

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect • interest-rate effect • savings effect

• The aggregate supply curve
– Why aggregate supply curves generally slope upwards

Aggregate demand and aggregate supply
AS

Price level

AD
O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect

• interest-rate effect
• savings effect

• The aggregate supply curve
– Why aggregate supply curves generally slope upwards

• Equilibrium

Aggregate demand and aggregate supply
AS

Price level

Pe

AD
O

National output

Aggregate demand and aggregate supply
AS

Price level

Pe
P2

b

a AD

O

National output

Aggregate Demand and Supply
• The aggregate demand curve
– Why aggregate demand curves slope downwards
• import effect • interest-rate effect • savings effect

• The aggregate supply curve
– Why AS curves generally slope upwards

• Equilibrium
– Effect of a shift in the AD curve

Inflation
• Defining inflation

• The costs of inflation
– redistribution

– uncertainty
– balance of payments

– resources used to cope with inflation

• Experience of inflation since 1965

Inflation
• Types of inflation
– demand pull

Demand-pull inflation

AS

Price level

P1

AD1
O Q1

National output

Demand-pull inflation

AS

Price level

P1

AD2 AD1
O Q1

National output

Demand-pull inflation

AS

Price level

P2

P1

AD2 AD1
O Q1 Q2

National output

Inflation
• Types of inflation
– demand pull – cost push

Inflation
• Types of inflation
– demand pull – cost push
• wage push

Inflation
• Types of inflation
– demand pull – cost push
• wage push • profit push

Inflation
• Types of inflation
– demand pull – cost push
• wage push • profit push • import-price push

Cost-push inflation
AS1

Price level

P1

AD
O Q1

National output

Cost-push inflation
AS2 AS1

Price level

P1

AD
O Q1

National output

Cost-push inflation
AS2 AS1

Price level

P2

P1

AD
O Q2 Q1

National output

Inflation
• Types of inflation
– demand pull
– cost push
• wage push
• profit push • import-price push

– the interaction of demand-pull and costpush inflation

The interaction of demand-pull and cost-push inflation

AS1

Price level

P1

AD1
O

National output

The interaction of demand-pull and cost-push inflation
AS2

AS1

Price level

P2

P1

AD2 AD1
O

National output

The interaction of demand-pull and cost-push inflation
AS3AS
2

AS1

Price level

P3

P2

P1

AD3 AD2 AD1

O

National output

Inflation
• Types of inflation
– demand pull – cost push
• wage push • profit push • import-price push

– the interaction of demand-pull and costpush inflation – structural (demand shift)

Inflation
• Types of inflation
– demand pull – cost push
• wage push • profit push • import-price push

– the interaction of demand-pull and costpush inflation – structural (demand shift) – expectations and inflation

Inflation
• Policies to tackle inflation
– demand-side policies – supply-side policies



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