Download presentation

Presentation is loading. Please wait.

1
IS - LM Model By Wong Chuen-Ping

2
**2 markets Goods Market Equilibrium: E = Y C + I = C + S I = S**

Money Market Equilibrium: Md = Ms

3
**The Goods Market S = 0.2Y - 40 I = 260 - 2000r 0.2Y - 40 = 260 - 2000r**

In equilibrium: S = I 0.2Y - 40 = r Y = r IS equation Y S I r 60 0.10 700 100 0.08 900 140 1100 180 0.04 1300 220 0.02 260 500 0.06 1500

4
The Goods Market Y = r

5
IS curve IS curve shows all the combinations of real national income (Y) and real interest rate (r) at which the goods market is in equilibrium.

6
How to derive IS curve? r r1 r2 I IS I2 I1 Y1 Y2 I 450 Y S1 S2 S S

7
**ED & ES in product market**

I=S E=Y ES S>I Y>E ED C A B (Y , S ) (Y . S ) S<I IS Y<E Y

8
**Disequilibrium in product market**

E=Y ES I<S E<Y ED I>S E>Y IS Y

9
r r The IS Curve IS r1 r2 I Y I1 I2 Y1 Y2 I S S 45 S2 S S1 Y I

10
**IS Curve IS r S, I S I2 I1 Y Y at r1, investment = I1**

Lower r, higher I r IS S, I r1 S r2 I2 I1 Y Y Y1 Y2 Y1 Y2

11
**The Money Market Ms =400 Mt = 0.25Y Ma = 250 – 2000r**

In equilibrium: Ms = Mt + Ma 400 = 0.25Y r Y = r LM equation Y Ms Mt Ma r 400 150 250 1000 1600 600 0.05 0.125

12
The Money Market Y = r Y R 600 1000 05 1400 0.1

13
LM curve LM curve shows all the combinations of real national income (Y) and real interest rate (r) at which the money market is in equilibrium.

14
**How to derive LM curve? LM r r2 r1 Ma Y Mt Ma A1 A2 Y1 Y2 H O T1**

Ms=OH=OK T2 Mt K Mt

15
**ED & ES in Money market ES ED LM Md<Ms Md>Ms Md=Ms r (Y . Mt ) C**

B (Y , Mt ) Md>Ms ED Y

16
**Disequilibrium in Money market**

LM Md<Ms Md=Ms ES Md>Ms ED Y

17
**r r The LM Curve LM Mt r2 r1 Y Ma Mt T2 T1 Y Ma Ma A2 A1 Y1 Y2 H Mt**

Ms=OH=OK Y Ma O K

18
**LM Curve LM r r M Y at Y1, Md = Md1 at Y2, Md = Md2**

Higher Y, higher Md LM r r Ms r2 r2 r1 r1 Md2 Md1 M Y Y1 Y2

19
**Equilibrium in Product & Money Market**

LM A r1 IS Y1 Y

20
**Disquilibrium in Product & Money Market**

< I S r Ms Md > LM F > I S > < Ms Md I S J G < Ms Md H > < IS I S Ms Md Y

21
**IS-LM Equations Goods Market Money Market C = 100 + 0.8Y**

I = r In equilibrium: Y = E = C + I IS equation: Y = r Money Market Ms = 300 Mt = 0.2Y Ma = r In equilibrium: Ms = Md =Mt + Ma LM equation: Y = r R = 0.1 i.e. 10% Y = 1300

22
**IS-LM Equations r = 0.05 i.e. 5% Y = 1475 Goods Market Money Market**

C = Yd I = r G = 525 T = 20%(Y-100) IS equation ? Money Market Ms = 800 Mt = Y Ma = r LM equation ? Y = r Y = r r = i.e. 5% Y = 1475

23
**Shifts in the IS curve I r1 r2 I2 I1 Y1 Y2 S1 S2 r IS2 I2 I1 IS1 I 450**

24
**Increase in Investment ( or↑G)**

↑I, at same r, Y↑, IS shifts to the right r △Y =△I x A B r1 IS2 IS1 Y1 Y2 Y

25
Shifts in the IS curve S r r1 IS2 I1 I1 Y1 Y2 IS1 I 450 Y S1 S2 S S1

26
**Decrease in Saving ( or↓T)**

↓S, at same r, E↑, Y↑, IS shifts to the right r A B r1 IS2 IS1 Y1 Y2 Y

27
Shifts in the LM curve LM1 r Ms LM2 r1 Ma A1 Y1 Ma Y T1 Mt Mt

28
**Increase in Money Supply**

at same Y, ↑Ms, Ms > Md, r↓ LM1 r LM2 A r1 B Y1 Y LM shifts to the right

29
**Increase in Money Supply**

↑Ms, at same r, Y↑, LM shifts to the right r LM1 △Y =△Ms x LM2 A r1 B Y1 Y2 Y

30
Shifts in the LM curve LM1 r Mt LM2 r1 Ma A1 Y1 Ma Y O T1 Mt2 Mt1 Mt

31
**Decrease in Mt LM shifts to the right at same Y, Mt↓, Ms > Md, r↓**

B Y1 Y LM shifts to the right

32
Shifts in the LM curve LM2 r Ma LM1 r1 Ma2 Ma1 A1 Y1 Ma Y O T1 Mt1 Mt

33
**Increase in Ma LM shifts to the left at same Y, Ma↑, Ms < Md, r↑**

B A r1 Y1 Y LM shifts to the left

34
**Increase in Investment (↑G, ↑C)**

LM B r2 A r1 IS2 IS1 Y1 Y2 Y

35
**Increase in Saving (↑Tax)**

LM A r1 B r2 IS1 IS2 Y2 Y1 Y

36
**Increase in Money Supply (↓Md)**

LM1 LM2 A r1 B r2 IS Y1 Y2 Y

37
**Increase in demand for Money (↓Ms)**

LM2 r LM1 B r2 A r1 IS Y2 Y1 Y

38
**Slope of the IS curve & MPS**

r↓, I↑→↑Y (ΔY = ΔI x ) r larger MPS, steeper IS r1 Smaller MPS, flatter IS r2 IS2 IS1 Y Y1 Y2 Y3 Smaller MPS, greater multiplier, flatter IS

39
**Slope of IS & Interest elasticity of I**

r↓, I↑, more interest elastic, larger ΔI, largerΔY Less interest elastic I, steeper IS r r1 More interest elastic I, r2 flatter IS IS2 IS1 Y Y1 Y2 Y3 more interest elastic investment, flatter IS

40
**Slope of LM & Income elasticity of Mt**

Y↑, Mt↑, more income elastic Mt, larger ↑in Mt, largerΔr more income elastic Mt, steeper LM r Less income elastic Mt, r1 flatter LM LM1 LM2 Y Y1 Y2 more income elastic Mt, steeper LM

41
**Slope of LM & Interest elasticity of Ma**

Y↑, Mt↑, Md > Ms, r↑to ↓Ma, less r elastic Ma, largerΔr less interest elastic Ma, steeper LM r more interest elastic Ma, r1 flatter LM LM1 LM2 Y Y1 Y2 less interest elastic Ma, steeper LM

42
**Fiscal Policy - ↑G IS2 AF =ΔG x IS1 LM r B r2 A F r1**

Crowding-out effect Y1 Y2 Y

43
**The crowding-out effect**

The crowding-out effect refers to the reduction in income resulting from an increase in interest rate. G E E >Y Y Mt Md > Ms r r I Y (crowding-out effect)

44
**The crowding-out effect**

IS2 AF =ΔG x r IS1 LM B r2 A F r1 Crowding-out effect Y1 Y2 Y

45
**Factors affecting the crowding-out effect**

condition of employment (unemployment, ? crowding-out effect) (full employment, ? Crowding-out effect) interest elasticity of demand for money, more interest elastic, smaller change in r, crowding-out effect ? interest elasticity of investment, less interest elastic, when r , smaller in I, crowding-out effect ? . smaller larger smaller smaller

46
**Fiscal Policy - ↑Tax LM LM IS1 IS1 IS2 IS2 Lump sum tax ↑,**

r LM r LM A A r1 r1 B B r2 r2 IS1 IS1 IS2 IS2 Y2 Y1 Y Y2 Y1 Y Lump sum tax ↑, IS shifts left Tax rate↑, IS steeper

47
**Fiscal Policy - Equal↑in G & T**

AF =ΔG = ΔT r IS1 LM B r2 A F r1 Crowding-out effect Y1 Y2 Y

48
Monetary Policy - ↑Ms r LM1 LM2 A r1 B r2 IS Y1 Y2 Y

49
**Fiscal & Monetary Policies - ↑Ms + ↑G**

B r1 A IS2 IS1 Y1 Y2 Y

50
**Effectiveness of Monetary Policy & slope of IS**

Ms ↑→r↓→I↑, LM →right , more interest elastic (flatter IS), larger ↑I, larger↑Y smaller MPS (flatter Y), larger ↑Y r LM1 LM2 A r0 B r1 r2 C IS1 IS2 Y0 Y2 Y1 Y Monetary Policy is more effective if IS is flatter

51
**Effectiveness of Fiscal Policy & slope of LM**

r↑smaller, crowding-out smaller G↑, IS →right , Y↑ → Mt↑, Mt less income elastic, Ma more interest elastic, r LM2 C r3 LM1 B r2 A r1 IS2 Crowding-out effect IS1 Y1 Y3 Y2 Y Fiscal Policy is more effective if LM is flatter

52
**The LM Curve with liquidity trap**

Ma – perfectly interest elastic Horizontal LM LM r1 Ma Y1 Y2 Y Ma Mt Mt H Mt T1 Y Ma O K

53
**The LM Curve with Ma perfectly interest inelastic**

vertical LM r2 Ma r1 Y1 Y Ma Mt Mt H Mt Y Ma O K

54
**The IS Curve with perfectly interest inelastic I r r**

Investment perfectly interest elastic IS IS vertical r1 r2 I1 Y1 Y I S S 45 S S1 I Y

55
**Horizontal LM G↑ Ms↑ IS2 IS1 IS1 LM Fiscal Policy effective**

B r1 r1 LM LM Y1 Y2 Y Y1 Y Fiscal Policy effective Monetary Policy ineffective

56
**Vertical LM G↑ Ms↑ LM1 LM2 IS2 IS1 IS1 Fiscal Policy ineffective**

B IS2 A r1 r1 A B r2 IS1 IS1 Y1 Y Y1 Y2 Y Fiscal Policy ineffective Monetary Policy effective

57
**Vertical IS G↑ Ms↑ LM1 IS1 IS2 LM2 IS Fiscal Policy effective**

B r2 r1 r1 B r2 A Y1 Y2 Y Y1 Y Fiscal Policy effective Monetary Policy ineffective

58
**Horizontal IS G↑ Ms↑ LM1 LM2 IS Fiscal Policy ineffective**

B Y1 Y2 Y1 Y Y Fiscal Policy ineffective Monetary Policy effective

Similar presentations

OK

Economic Models The selection of variables What is the difference between an endogenous variable and an exogenous variable? What are the endogenous variables.

Economic Models The selection of variables What is the difference between an endogenous variable and an exogenous variable? What are the endogenous variables.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on security features of atm machine Ppt on first conditional worksheets Ppt on planets in the solar system Ppt on conservation of momentum law Doc convert to ppt online templates Ppt on chromosomes and genes labeling Free download ppt on flora and fauna of india Ppt on contract labour act 1970 india Ppt on product marketing mix Ppt on industrial revolution in europe