Aggregate Demand Flashcards
Definition of Aggregate Demand
Total amount of spending on goods and services at a given price level in a year
What are the 4 components of AD (e.g. the equation)
AD = C + I + G + (X-M)
- C = Consumption –> most significant 60% of total
- I = Investment - 3rd most significant - fluctuates on economy performance
- G = Government Expenditure - Significance increases during downturns/ recessions e.g. 2008 or COVID-19 - 2nd Significant
- X-M = Exports - Imports
Why is the AD curve downwards facing?
- The Real Balance effect –> when Price Level ↑, Purchasing power ↓, leading to a decrease in D for R. Output
- International Trade Effect –> Price Level ↑, International Competitiveness ↓, D. Exports ↓, D. Imports ↑–>Contraction in AD
- Interest Rate effect –> ↑Price level –> ↑D for Money –> Interest rates ↑, ↓Consumption and Investment –> Contraction in AD
Draw an AD curve
AD curve downwards sloping
Y Axis = Price Level
X Axis = R. GDP
What Causes a Movement Along AD Curve Vs. Shift in AD Curve?
Movement Along = △Price Level
Shift = When one of C+I+G+(X-M) Changes
AD↑ = Curve shifts Right / Outwards
AD↓= Curve Shifts Left / Inwards
What is Disposable Income?
Money people have available to spend on Goods + Services
–> Important in Consumption
How do you work out the Average Propensity to Consume and Average Propensity to Save?
APC = Consumption / Disposable Income x 100
–> Proportional of Dispo. Income spent on Consumption
APS = Savings / Disposable Income x 100
–> Proportion of Dispo. Income spend on Saving
What is the Interest rate? + influence on Consumption
the cost of borrowing / reward for saving
- Interest rates↑, Cost of Borrowing ↑, Opportunity Cost of spending ↑ –> Consumption ↓
List 5 things that have an influence on Consumption
- Intrest Rates
–> Interest rates↑, Cost of Borrowing ↑, Opportunity Cost of spending ↑ –> Consumption ↓ - Consumer Confidence
–> Confident / Secure (Economy expectations high) likely to buy high value items –> Consumption ↑ - Wealth Effect
–> House/ Share Price ↑ –> feel wealthier –> Consumption ↑ - Disposable Income
- Employment
What is the Wealth Effect + influence on Consumption?
the effect on spending when asset prices change
–> House/ Share Price ↑ –> feel wealthier –> spend more –> Consumption ↑
e.g. house worth more, can take out larger loan
Define Investment Vs. Gross Vs. Net Investment + Which is more usefull
Investment
- Increase in the Capital Stock
Gross Investment
- Total expenditure on new capital Good
Net Investment
- New Capital stock with fall in value (depreciation) taken into account
–> Met pre useful as prospect for economy
List 5 things that can influence Investment
- Economic Growth
–> ↑R.GDP –> ↑Investment - Business Confidence / Expectations
–> Confidence ↑ –> Investment ↑ - D. for Exports
–> ↑D. for Exports –> ↑Investment - Interest rates
–> Interest rates ↑ –> Cost of borrowing Money ↑–> Investment ↓
–> 2008 Financial crisis, Banks unwilling to lend despite low interest rates –> Investment ↓ - Government
–> Gov policy e.g. taxation –> Cut in Corporation Tax –> Investment ↑
How does Economic Growth Impact Investment
- ↑R.GDP –> Firms need more Capital –> ↑Investment –> virtuous cycle
How does Business Confidence / Expectations effect Investment?
- Confidence ↑ –> Investment ↑
How does D. For Exports effect Investment?
- ↑D. for Exports –> ↑Investment