EFLATIONARY GAP M.POURHOSSEINI
MACROECONOMIC BACKGROUND IN THIS TUTORIAL WE REVIEW SOME BASIC MACROECONOMIC AGGREGATESIN THIS TUTORIAL WE REVIEW SOME BASIC MACROECONOMIC AGGREGATES The purpose is to provide the students whose first degree is not economics with some basic toolsThe purpose is to provide the students whose first degree is not economics with some basic tools The tutorial will focus on deflationary gap,The tutorial will focus on deflationary gap, and accelerator principle and accelerator principle
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL The deflationary gap – –withdrawals and injections approach The deflationary gap – –withdrawals and injections approach
The deflationary gap O Y W W, J J YeYe
O Y W J YeYe YFYF The deflationary gap
O Y W W, J J YeYe YFYF Deflationary gap c d The deflationary gap
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The deflationary gap – –withdrawals and injections approach – –income and expenditure approach
O Y W, J, E YeYe YFYF Y E The deflationary gap
O Y YeYe YFYF Y E a b Deflationary gap W, J, E The deflationary gap
O Y W J YeYe YFYF c d Y E a b Deflationary gap W, J, E The deflationary gap
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap – –withdrawals and injections approach The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap – –withdrawals and injections approach
The inflationary gap O Y W W, J YeYe J
O Y W YeYe YFYF J The inflationary gap
O Y W W, J YeYe YFYF g h Inflationary gap J The inflationary gap
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap – –withdrawals and injections approach – –income and expenditure approach The deflationary gap – –withdrawals and injections approach – –income and expenditure approach The inflationary gap – –withdrawals and injections approach – –income and expenditure approach
O Y YeYe YFYF Y E W, J, E The inflationary gap
O Y YeYe YFYF Y E Inflationary gap e f W, J, E The inflationary gap
O Y YeYe YFYF Y E Inflationary gap e f W J g h W, J, E The inflationary gap
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL Inflation and unemployment at the same time – –inflationary pressures before the full-employment level of income – –implications for shape of AS curve Inflation and unemployment at the same time – –inflationary pressures before the full-employment level of income – –implications for shape of AS curve
Unemployment and inflation O Y Price level YFYF AS 1
O Y Price level YFYF AS 2 Unemployment and inflation
UNEMPLOYMENT AND INFLATION IN THE SIMPLE KEYNESIAN MODEL Inflation and unemployment at the same time – –inflationary pressures before the full-employment level of income – –implications for shape of AS curve – –relationship between 45° line diagram and the AD & AS diagram Inflation and unemployment at the same time – –inflationary pressures before the full-employment level of income – –implications for shape of AS curve – –relationship between 45° line diagram and the AD & AS diagram
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS AD 1
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS P1P1 Y1Y1 AD 1
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS P1P1 Y AD 1 E1E1 Y1Y1
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS AD 1 P1P1 Y AD 2 E1E1 Y1Y1
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS AD 1 P1P1 Y AD 2 E1E1 E2E2 Y1Y1 Y2Y2
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS AD 1 P1P1 Y1Y1 Y E1E1 AD 2 E2E2 Y2Y2 P2P2
Allowing for inflation in the 45 Allowing for inflation in the 45 line and AD / AS diagrams P C d, W, J, E Y Y AS AD 1 P1P1 Y1Y1 Y E1E1 AD 2 E2E2 Y2Y2 E3E3 Y3Y3 P2P2
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE The accelerator – –changes in national income and induced investment The accelerator – –changes in national income and induced investment
The accelerator effect
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE The accelerator – –changes in national income and induced investment – –the accelerator coefficient The accelerator – –changes in national income and induced investment – –the accelerator coefficient
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment
Fluctuations in real GDP and investment:
GDP
Fluctuations in real GDP and investment: GDP Investment
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment The multiplier / accelerator interaction The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment The multiplier / accelerator interaction
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment The multiplier / accelerator interaction Fluctuations in stocks The accelerator – –changes in national income and induced investment – –the accelerator coefficient – –the instability of investment The multiplier / accelerator interaction Fluctuations in stocks
KEYNESIAN ANALYSIS OF THE BUSINESS CYCLE Analysing the phases of the business cycle – –causes of the upturn – –causes of the expansion – –causes of the peaking out – –causes of the recession Conclusions – –why do booms and recessions persist? – –why do booms and recessions come to an end? Analysing the phases of the business cycle – –causes of the upturn – –causes of the expansion – –causes of the peaking out – –causes of the recession Conclusions – –why do booms and recessions persist? – –why do booms and recessions come to an end?