2.2.1 + 2.2.2 Flashcards
Aggregate Demand
total planned real expenditure on goods and services produced within a country in a given time period.
C+I+G+(X-M)
aggregate demand curve shows a relationship between…
general price level and real gdp
Lower GPL =
expansion of AD = higher real GDP
Higher GPL =
Contraction of AD = lower gdp
why the AD Curve Slopes Downwards
- real income effect
- balance of trade effect
- interest rate effect
Real income effect
As the price level falls, the real value of income rises, and consumers are able to buy more of what they want or need
– this is known as the real money balance effect or real income effect
- the change in income is due to the change in the price level
Balance of trade effect
If UK price level rises, less demand from other counties for UK goods, so less goods exported, so net trade decreases and AD contracts
Interest rate effect
High interest rates - more saving - less consumption - inward shift of AD
Causes for fall in AD
- Fall in net exports (M>X)
- cut in real level of gov spending
- higher interest rates/ fall in the supply of credit from banking systems
- decline in household wealth and confidence
Causes for increases in AD
- Depreciation in the value of the exchange rate
- Cuts in the rate of direct and indirect taxes
- Increase in house prices and share prices
- Expansion of supply of credit + lower interest rates
External Shocks and Aggregate Demand
- unexpectedly large rise or fall in the value of exchange rate.
- A recession, slowdown or boom in a nation’s key trading partner countries.
- A slump in the housing market / construction sector of a country heavily reliant on these industries
- An event such as the Global Financial Crisis which caused a steep fall in the supply of credit available to businesses and households and which ultimately led to recession in many countries.
- A large change in commodity prices for a country that is a commodity exporter or a net commodity importer
External shock definition
unexpected economic events cause changes in demand, output and employment
Consumption (C)
Consumption is spending on consumer goods and services
Marginal Propensity to Consume (MPC)
Marginal propensity to consume is the change in spending following a change in income (ΔC/ΔY).
o receives extra pay of £2000 and spend £1500
o MPC is £1500 / £2000 = 0.75
o rest is saved so marginal propensity to save (MPS) is 0.25
Factors that affect consumer spending
- Real Disposable Income
- Employment and Job Security: When labour market is improving, confidence and incomes improve.
- Consumer Confidence: Uncertainty causes spending to fall, improving animal spirits will improve demand.
- Market Interest Rates