Unit 2.2 Flashcards
Aggregate demand
the total demand for goods and services within a country. Measures spending on goods and services by consumers , firms, government and overseas consumers.
AD = C + I + G + NX
AD= (consumers) + (investment) + (government) + ( Net exports)
Consumer spending
Amount consumers spend on goods and services, this is the biggest contributor of AD
Investment
Investment/ spending from businesses, mostly from private sector businesses. Investment is spending which adds to the capital stock ie can only be used to increase output in the economy.
Government spending
This is how much the government spends on goods and services such as schools, hospitals, benefits, defence etc
NX ( exports - imports)
This is known as Net exports and is the value of the current account on the balance of payments ( we are in a deficit so this reduces AD)
Interest rate effect on AD
If I/r increase then investment and consumer spending decreases so AD decreases
Movement along the AD curve
If there is a fall in price level there is an extension in demand, if there is increase in price there is a contraction in demand.
Movement and Shift in the AD curve
If price changes in an economy (and nothing else) there will be a movement along the AD curve. If any of the components change then there will be a shift in the curve. Shift left ( inwards) if components decrease, Shift right ( outwards) if components increase
Reasons for shifts in the curve ( assuming price level is the same)
-Higher confidence levels amongst businesses will encourage more investment
-The wealth effect- most people in the UK own their own houses, so if house prices increase, they feel wealthier and so they spend more
-Bank of England decides to decrease interest rates. This lowers the cost of borrowing , decreases the incentive to save and lowers mortgage payments for homeowners. All these can result in increased consumptions.
-Decrease in tax rate means more disposable income which shifts AD to right
-An increase in government spending shifts AD to the right
-Weakening pound means we export more and shifts AD to right
factors affecting consumer spending
- Real disposable income
- Household wealth including house prices
- Unemployment / job security
- Interest rates paid on loans and savings
- Availability of credit finance
- Consumer confidence / animal spirits
propensities to spend and save
*Disposable income can be spent or saved
* Marginal propensity to consume (MPC)
* Marginal propensity to save (MPS)
* MPC + MPS = 1
* A rise in the marginal propensity to save implies a lower marginal propensity to spend
How lower interest rates can increase aggregate demand
A fall in interest rate on a property mortgage means that home buyers have less to pay each month paying the interest on a home loan. This means they have a higher effective disposable income which can be spent on goods and services. Another effect of lower interest rates is usually to lower the cost of servicing a credit card to other types of borrowing. And it also reduces the incentive to save, especially if nominal interest rates on savings are below the rate of inflation. Through these channels, lower interest rates can be expected to lift consumer demand which is the largest component of AD. Cheaper loans might also lead to a rise in planned capital investment spending by businesses which is also a component part of AD.
Disposable income
The amount consumers have left over after taxes ; they can choose to spend or save this money.
Where does income for consumption come from
- Wages
-Pension - Investment
-The wealth effect - assets rising in value
Marginal propensity to consume
MPC: Refers to how much a consumer changes their spending following a change in income.
For individuals the MPC could be greater than 1 if they borrowed money to consume. For the economy as a whole the MPC is likely to be positive but less than .
= change in total consumption / change in income
Marginal Propensity to save
MPS: How much consumers change their saving following a change in income.
=change in total savings / change in income
MPC formula
Positive means a rise in income will increase consumption
Change in consumption/ change in income
Average Propensity to consume
APC: Measures the average amount spent or consumed out of total disposable income in an economy
Consumption (C) / Income (Y)
Other factors affecting C
-The availability and cost of credit - regulations on borrowing money can increase or decrease the level of consumption. Changes in i/r can make it cheaper / more expensive
-Expectations - If people expect a downturn in the economy to a period of slow growth they may save more
-Confidence - If consumers expect to be promoted in the future or are secure and know there are lots of jobs prospects
-Asset prices - changes in the value of shares or houses can influence spending decisions ( the wealth effect)
Time Lags In C
- A fall in Income ( Y ) might not immediately feed through to a fall in C
-Changing interest rates ( i/r ) won’t change C straightaway
Examples of Capital investment
-Robotics
-Integrated Plant
-Machine tools
-Infrastructure
-Software
-Logistics
Factors Influencing Planned business investment
-Actual and expected demand for goods and services
-Expected profits and business taxes
-Intrest rates + availability of business finance
-Business confidence i.e. animal spirits
Key points:
-Government can lift investment by lowering corporation tax or offering other tax incentives as part of their fiscal policy
-Planned investment tend to rise when firms expect rising demand and have limited spare capacity to supply goods and services.
Explaining the basic accelerator effect - examples
-Investment to expand the fleets of delivery companies as online spending surges
-Rising capital investment in renewable energy as energy supply shifts towards renewable
animal spirits
John Maynard Keynes coined the notion of animal spirits which refers to a mix of confidence, trust, mood and expectations
When confidence is low, individuals save more, businesses save more too and because demand and profits lower than expected , they cut back on production and prehaps postpone or cancel capital investment projects.
Significance of investment for the Economy
-Injection of demand for capital goods and industries
-Investment can lift productivity/ incomes
-economies of scale and better competitiveness
-Investment helps to sustain export- led growth
The Basic accelerator effect
- The accelerator effect is a positive relationship between planned capital investment and the rate of change of national income
- Consider an industry (sector) where demand is rising quickly
- Firms may respond initially by using their existing capacity more intensively or running down stocks of finished products
- If they expect high demand will be sustained - they may increase spending on plant and machinery, factories and new technology to increase their supply capacity
- This causes a positive accelerator effect - a rise in demand for consumer goods and services will cause a bigger percentage change in demand for capital goods
Gross Investment
Gross investment is the total amount that the economy spends on new capital. This figure includes an estimate for the value of capital depreciation since some investment is needed each year just to replace technologically obsolete or worn-out plant and machinery.
Net investment
Net investment = gross investment -
capital depreciation.
If gross investment is higher than depreciation, then net investment will be positive. This means that businesses will have a higher productive capacity and can meet rising demand in the future.
Difference between savings and capital investment
Savings represent the total amount of income that is not consumed by households, businesses, or the government.
Capital investment is spending on machinery, equipment, factories, technology & infrastructure to create new capital goods.
Main components of government spending
-Welfare spending ( transfer payments)
-Public spending ( recurring spending )
-State investment ( investment projects)
What is the difference between the current and capital spending by the government
Current government spending- on providing public services
* Salaries of NHS employees
* Drug used in healthcare
* Road maintenance budget
* Army logistics supplies
Capital spending - investment in new public infrastructure
* Construction of new motorways and bridges
* New equipment in the NHS
* Flood defence schemes
* Extra defence equipment
Government spending and aggregate demand
-Increase in Aggregate Demand: When the government increases its spending on goods, services, infrastructure projects, or social (welfare) programmes, it injects money directly into the economy.
-Offsetting Economic Declines: During a recession, by increasing its own spending, the government can help stimulate economic activity, preventing a more severe downturn. This is known as a fiscal stimulus.
Exporting
exporting is the act of selling goods and services to another country. Income from exports counts as an injection into the circular flow of income and adds to aggregate demand (AD)
Trade Balance
The trade balance is the difference between the value of exports and imports. When the value of exports is greater than the value of imports, the trade balance is in surplus. When the value of imports is greater than the value of exports, the trade balance is in deficit.
Factors influencing exports of goods and services
-Relative prices of exports in world market
-The exchange rate - a stronger currency makes exports more expensive
-Non price demand factors e.g. Design and Branding
- Strength of Aggregate demand in key export markets
Aggregate Supply
AS- The total amount that producers in an economy are willing and able to supply at a given price level in a given time.
Short term aggregate supply
The SKAS is defined as being the total supply in an economy when 1 factor of production is fixed.
The aggregate supply curve
The aggregate supply curve is upward sloping because at a higher price level, producers are willing to supply more as more profits can be earned
What shifts AS curve in short run (affects cost of production)
-Cost of labour- increase in wages, employment taxes, employment regulation …. leads to increased costs, therefore firms less willing and able to supply.
-Cost of commodities/ raw materials - rising costs such as increasing energy costs will decrease the amount supplies are willing and able to supply
-Exchange rates - If pound weakens in value against other currencies. The price of imports will be higher resulting in increased costs of imported component parts.
-Changes in productivity- Increased productivity leads to lower costs so suppliers are willing and able to supply more
-Taxation/ regulation- increase in tax would mean higher costs for suppliers therefore less willing and able to supply
-Technological advancements (SR and LR) - leads to more efficient production therefore increasing the amount suppliers are willing and able to supply.
Macroeconomic equilibrium
Macroeconomic equilibrium for an economy in the short run is established when AD intersects with SRAS. If increase in AD only this will lower inflation and increase GDP. This equilibrium determines the general price level and real GDP level. Changes (shifts) in SRAS and for AD will being about a change in the equilibrium.
Explain the shape of the keynesian AS curve
-When spare capacity is high, aggregate supply will be elastic: this means that a rise in aggregate demand can be met easily by increased output and there is little threat of rising prices (inflation)
-The elasticity of the curve falls as a country moves through an economic cycle:
1.The amount of spare capacity declines
2.There is the possibility of diminishing returns in production
3.Bottlenecks appear in the supply of key inputs including skilled labour
-When AS is perfectly inelastic, an economy is at full capacity (equivalent to being on the PPF boundary); this means that further increases in AD are purely inflationary in the short run with little extra real output
Keynesian Aggregate Supply Curve
The Keynesian aggregate supply curve is non-linear where the elasticity of aggregate supply is dependent in part on the level of spare productive capacity at different stages of a nation’s economic cycle.
At first the line is horizontal- perfectly elastic portion of the AS curve
Then it begins to bend upwards- Elasticity of aggregate supply now starting to drop as economy heads towards productive capacity
Finally it is vertical - Elasticity of supply is zero when full capacity is reached
Keynesian Aggregate Supply Curve - Non-inflationary growth
An outward shift in AD from AD1 to AD2 can be met without an increase in the general price level because aggregate supply is highly elastic
Keynesian Aggregate Supply Curve - Inflationary pressures from rising AD
Here, an outward shift in AD from AD3 to AD4 causes a sharp rise in the general price level because AS is now inelastic - output is close to full-capacity levels
Long run aggregate supply
Long run aggregate supply (LRAS) represents the maximum possible output; it is like a country’s PPF. It represents that maximum output when all factors of production are fully and efficiently employed.
Labour productivity
A measure of efficiency indicated by output per person employed or value of output per hour worked.
Infrastructure
Infrastructure includes physical capital such as transport networks, energy, power and water supplies and telecommunications networks