CFA L1 Economics Flashcards
What variables influence the quantity of demand?
- Price
- Incomes in the economy
- Prices of substitues and complements
EC PREREQ1 Topics in demand and supply analysis
At what point would a business maximising revenue stop increasing prices?
- When there is unit elasticity
- ie elasticity = 1
- ie when a 1% increase in price results in a 1% decrease in demand (no net change in revenue)
EC PREREQ1 Topics in demand and supply analysis
What goods have more price elasticity?
- When close substitutes are available
- When it constitutes a large % of the household budget
- When looking at long term demand (more sensitive to price over the long run)
- When the goods are optional or discretionary
EC PREREQ1 Topics in demand and supply analysis
What goods are less price elastic?
- Those for which there are no close substitutes available
- Goods which constitute a small % of the household budget
- Goods for which there is only short term demand (i.e., travel)
- Goods which are a necessity or non-discretionary
EC PREREQ1 Topics in demand and supply analysis
Where on the demand curve is price unit elastic?
In the middle.
- Top left is elastic
- Bottom right is inelastic
EC PREREQ1 Topics in demand and supply analysis
What is income elasticity of demand?
- The amount demand for a given good changes when income in the economy increases
EC PREREQ1 Topics in demand and supply analysis
What is a normal good?
A good for which demand increases when income increases
- Income elasticity of demand is greater than 0
EC PREREQ1 Topics in demand and supply analysis
What is an inferior good?
A good for which demand DECREASES when income increases
- Income elasticity of demand is less than 9
EC PREREQ1 Topics in demand and supply analysis
What is the substitution effect?
- As price goes down, quantity goes up as demand gets substituted over
- Tends to always be positive
EC PREREQ1 Topics in demand and supply analysis
Is the income effect positive or negative?
- It depends on the type of good
- If it is a normal good, the income effect is positive
- If it is an inferior good, the income effect is negative
EC PREREQ1 Topics in demand and supply analysis
How do substitution and income effect impact quantity demanded of normal goods versus inferior goods?
- For normal goods they reinforce each other
- For inferior goods they offset each other (and quantity demanded increasing is not as much)
EC PREREQ1 Topics in demand and supply analysis
What is a Giffen good?
- An inferior good for which the negative income effect (due to substituting away) outweights the positive substitution effect when price decreases
- i.e., as the real price drops the quantity demanded drops
EC PREREQ1 Topics in demand and supply analysis
What is a Veblen good?
As the nominal price rises, quantity demanded rises
EC PREREQ1 Topics in demand and supply analysis
What are increasing marginal returns?
The productivity of each additional unit of a resource (L,K) increases as each additional unit of that input are employed
- An example might be adding labour, through specialisation and division of labour ie Adam Smith’s production line
EC PREREQ1 Topics in demand and supply analysis
What are diminishing marginal returns?
- After a certain output, the output to labour ratio begins to decrease
- One example is if K (capital) is being used at 100% capacity. In this case, labour will not increase output
EC PREREQ1 Topics in demand and supply analysis
What are the benefits of increased productivity?
- lower total costs (which translates into higher productivity measures)
- if increased productivity is passed onto the worker, then increase in worker rewards, which motivates further productivity increases from labour
- Increase in market value of a company’s equity
EC PREREQ1 Topics in demand and supply analysis
What is economic profit?
Total revenue - economic costs
Where economic costs are accounting costs + an equity charge + the opportunity cost
EC PREREQ1 Topics in demand and supply analysis
Under perfect or imperfect competition what does the demand curve look like?
- Under perfect competition all firms are small and none have influence over the price (cannot produce enough to do so)
- They are all price takers
- Therefore it is a horizontal line
- Under imperfect competition there is a downward sloping curve, because if we lower our price we will get a different quantity
EC PREREQ1 Topics in demand and supply analysis
What is shutdown point?
Variable costs equal revenue (so not enough to cover fixed cost)
EC PREREQ1 Topics in demand and supply analysis
How can you justify increases in wages using the marginal cost formula?
If wages increase then ceteris paribus marginal cost just increases
- If wages increase but the marginal product of labour increases to offset it then marginal cost does not change
- As such increases in wages can be justified where an increase in marginal product of labour equally accompanies it, as the economics of the business for the owners do not change
EC PREREQ1 Topics in demand and supply analysis
What does it mean that under perfect competition no firms will make a profit?
The profit here is economic profit
- Therefore it includes opportunity cost
- It is not saying that the firms will make no money
- Rather, it is that firms will only make back their cost of capital
- There are no ABNORMAL profits
EC PREREQ1 Topics in demand and supply analysis
What determines optimal output?
The intersection of marginal revenue and marginal cost
EC PREREQ1 Topics in demand and supply analysis
What determines optimal price?
The demand curve, which is extended above marginal revenue on the graph
EC PREREQ1 Topics in demand and supply analysis
How do you find average total cost from a cost per unit graph?
- Find quantity on the X
- Go upwards to see the Y value of average fixed cost
- See the difference between average variable cost and average variable cost at that X value
- Add the two together
EC PREREQ1 Topics in demand and supply analysis
What is marginal cost?
- The change in total cost for a change in quantity
EC PREREQ1 Topics in demand and supply analysis
What is the diff between short run marginal cost and long run?
- Short run = additional cost of labour input / Q
- Long run = additional cost of all inputs / Q
EC PREREQ1 Topics in demand and supply analysis
What is the short run?
- The period of time over which all factors of production are fixed except labour
- In the long run all factors of production are variable
EC PREREQ1 Topics in demand and supply analysis
What is average variable cost?
- Total variable costs / Q
- Therefore if wages go up, AVC increases
- If average product of labour goes down, AVC increases
EC PREREQ1 Topics in demand and supply analysis
What is r on the cost/unit graph?
- The minimum point of marginal costs
- Beyond this point producing more units begins to get more expensive per unit because of fixed input constraints
EC PREREQ1 Topics in demand and supply analysis
What is S on the cost/unit corve?
- The lowest point on the average variable cost curve
- Every point before S average varable cost is downward sloping (decreasing costs per unit)
- Beyond S, marginal cost is greater than average variable cost, and therefore average variable cost is upward sloping
- This means increasing costs per unit
- S is called our shutdown point
EC PREREQ1 Topics in demand and supply analysis
What is T on the cost/unit graph?
- The economic breakeven point
- The lowest point on the average total cost curve
EC PREREQ1 Topics in demand and supply analysis
What is abnormal economic profit?
- When profits cover the cost of capital and go beyond
- Normal economic profit would be covering the cost of capital
- This is different from a financial profit because financial profit does NOT take into account cost of capital
- Therefore economic profit can be negative when financial profit is positive
```
~~~
What shape is the demand curve under imperfect competition?
- Inverse U shape, because there is some maximum point beyond which producing more quantity does not increase total revenue
- By contrast under perfect competition total revenue and quantity have a upward sloping relationship throughout
EC PREREQ1 Topics in demand and supply analysis
What are the characteristics of perfect competition?
- Many firms, no one less than 10% of the market
- Products are homogeneous and standardised
- No power over pricing decisions
- Very low barriers to entry/exit
- Competing solely on price
A good example is commodities
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What are the characteristics of monopolistic competition?
- Many firms but with some with greater than 10% market share
- Products are differentiated
- Sellers have some power over pricing decisions
- Low barriers to entry or exit
- Advertising and product differentiation create non price competition
A good example is clothing brands
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is the definition of oligopoly?
- Few firms
- Homogeneous and standardised products
- Some to considerable seller power over pricing
- High barriers to entry or exit
- Advertising and product differentiation create non price competition
A good example is airlines
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is the definition of monopoly?
- One firm
- Unique product
- Considerable seller power over pricing decisions
- Very barriers to entry or exit
- Don’t need to worry about non price competition, but otherwise do it through advertising
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What does the demand curve look like for perfect competition?
- Infinitely elastic. Price taker and prices are industry determined
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What does the demand curve look like under monopolistic competition?
- Inverted U shape total revenue curve
- Downward sloping price/quantity curve since prices are firm determined
- The marginal revenue curve has a slope twice that of the demand curve
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What does the supply curve look like for perfect competition?
- Level of output is determined by the marginal cost schedule (where MR = MC)
- Under the shutdown point the firm would not produce anything, since it does not even cover variable cost
- MR = MC is where we either maximise profit or minimise loss
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What does the supply curve look like for monopolistic competition?
- No well defined supply curve because there are multiple prices. We need to plot out P/Q points and connect them
- Level of output determined by where MR = MC
- However price is not determined by MR unlike perfect comptition, price is determined by the demand curve
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is optimal price/output for perfect competition?
- Depends how high the ATC curve is
- If you can lower your costs then MC meets MR at a point above ATC
- This means there is economic profit greater than zero, attracting new entrants into the industry
- If costs increase such that MR meets MR at a point below AVC, Q jumps to 0 (shutdown)
- Otherwise firms will minimise losses, by just covering VC
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is optimal price/output for monopolistic competition?
- Where MR meets MC
- revenue = P x Q
- Profit = the area between C and P, x Q
- Optimal output maximises that area
Why is equilibrium desirable?
- Demand curve can be interpreted as a marginal value curve
- As price gets lower certain buyers get more and more value
- Consumer surplus is the triangle above P x Q
- Consumer surplus can be calculated as 1/2 b x h and this equation rearranged to work backward from price to consumer surplus if we have an equation linking P and Q
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is minimum efficient scale?
- The point at which a firm must make products in a certain quantity and with total costs in order to enter the market
- Perfect competition means firms achieve this value
- Minimum efficient scale is not achieved under monopolistic competition because firms must spend on advertising to compete
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What might cause monopoly?
- Patents and copyrights
- Control over critical resources
- Government authorisation (ie if deemed to be a natural monopoly)
- Network effects ie Facebook
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What does the supply curve look for monopoly?
- There is no well defined supply function
- Profit maximising level of output is still MR = MC
- More like a supply point
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
Where can regulation step in to regulate a monopoly?
- Either on the long run average cost or long run marginal cost curve
- in the first instance govt provides subsidies to bring the price to where it would be without monopoly. Not very popular
- In the second govt sets a price of what it would be without monopoly, i.e., on the LRMC curve. Note this includes returns to account for cost of capital, it does NOT mean the firm makes no profit.
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
How is quantity affected by the 3 different strategies of regulating monopoly?
- If govt provides subsidies Q will be higher
- If govt sets price then Q will be lower
- If govt nationalises the company this will ENABLE the existence of a company. If there was perfect competition no one would make a profit and no one would enter the market for very large industries ie infrastructure. Thus national ownership CREATES the possibility of supply
2024 L1 EC PREREQ2 – Introduction to the Firm and Market Organization
What is aggregate output?
Value of all goods and services produced in a specific time period
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is aggregate income?
- Value of all payments earned by the suppliers of the factors of produciton
- Includes wages, rent, interest, profit
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How can we measure GDP?
- Since households are the ultimate owners of productive assets plus the source fo all labour it is standard to attribute all income to the household sector
- Since aggregate output = aggregate income = aggregate expenditure = GDP (denoted as Y), total household income must equal spending must equal GDP
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What does GDP attempt to measure, according to the output definition?
The market value of all FINAL G&S produced within an economy in a given period of time
- This is the output definition
- All goods and services must me produced during the measurement period
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
tempt
What does GDP exclude under the output definition?
- G&S whose value can be determined by being sold in a market
- Only the market value of all FINAL G&S is included (excludes value of intermediate manufacturing steps + cost of imports)
- Production in previous periods, capital gains, and transfer payments from govt to households are excluded
- As such inventory is accounted for when PRODUCED not in the period when sold
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Why is expenditure an easier means to measure GDP?
- Versus income expenditure data is far more easy, more disclosed, and more widely available
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What work is not included in GDP?
- Work which does not have a market value ie where no one is paid
- If you shovel snow on your own driveway it does not count toward GDP
- For this reason it’s easier to count the aggregate income or expenditure rather than aggregate production
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What are the two measurement methods to the output approach?
- Value of final output: what is the price from retailer to customer
- Sum of value added: sum of differences between purchase of inputs and sale of outputs across every stage of the production chain
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How do we account for G&S whose market price cannot be determined in GDP?
- We proxy using a market equivalent
- For example we assume that all people who own their houses pay rent “to themselves”
- The advantage of this is that for housing the production is far too cyclical (really high in some periods and really low in others) meaning we wouldn’t get a good picture of the whole economy (?)
- Government services are included at cost with no value added
- Barter transactions are not included
- Illegal activites are excluded
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the difference between nominal and real GDP?
- Nominal GDP is the value of G&S produced at current prices
- Real GDP removes the effect of changes in the general price level, and per capita real GDP meanures the standard of living in an economy
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How do we calculate real GDP?
- Multiply prices at the base year by quantity in the measurement year
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the GDP deflator?
- Nominal GDP / Real GDP x 100
- By rearranging we can find real GDP
- We can also find real GDP growth
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is deflation?
- Any level of inflation below 1%
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How does money flow around an economy between households, firms, the government, and rest of world via the factor market, goods market, and financial markets?
- Household consumption > goods market
- Govt spending > goods market
- Firm investment > goods market
- C + I + G + (X-M) from goods market > firms
- Net exports between goods market and rest of world
- Factor market income > households
- Factor market labour, capital, land > firms
- Financial markets > govt borrowing
- Financial markets net foreign borrowing/lending > rest of world
- Firm business financing of debt and equity > financial markets
- Household net taxes > govt
- Household savings > financial market
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the most volatile component of GDP?
Investment
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What do we have to add to net domestic income to arrive at GDP or national income?
- Consumption of fixed capital (ie depreciation) to replenish capital stock
- Statistical discrepancy
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is personal income?
- All income received by households
- Wages + net mixed income + net property income
- Net mixed income includes income that may not have been earned
- Net property income is the rent houseowners “pay to themselves” ie to account for property production
- Net property income cancels out in consumption so isn’t counted there
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is disposable income?
- Personal income - net personal taxes
- Net personal taxes = taxes paid - transfers received
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What are personal savings?
- Disposable income - consumption + change in pension entitlements
- pension entitlements are the tax deduction plus the return on the assets as well
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What are domestic savings used to finance?
- Investment
- Fiscal deficit
- Trade surpluses
- This is because S = I + (G-T) + (X-M)
- It holds because AE = AI
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What happens if you add all global exports and imports?
- You reach zero, because net trade is zero sum
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Why do savings finance trade surpluses?
- If we sell more to other countries than we buy from them then the money they send to us has to be going back somehow
- And they must spend less on their domestic economy than they generate in domestic income
- As such other countries have to finance our trade deficit
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Why are inflation and interest rates the first things you look at as a forecaster to determine investment in the future?
- Inflation and interest rates are major determinants of purchasing, saving, and investment decisions by firms and households
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What function is C relative to Y and r (the real interest rate)?
- An increasing function of Yd because consumption increases when disposable income increases
- as most households have a marginal propensity to consume. When they make more they spend more
- A decreasing function of r because we are less likely to purchase durable goods (like cars, large appliance purchases, property and property improvements)
- because durable goods are usually purchased through finance
- high interest rates make these purchases less attractive
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the paradox of thrift?
- If r is really high it might cause excessive saving
- this means no one spends in the economy and slows the economy
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What impact does larger MPC have on the relationship between consumption and GDP?
- Larger marginal propensity to consume means GDP changes have a greater impact
- Consumer sector has a larger impact on GDP
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What function of I is relative to r and aggregate expenditure?
- Investment is a decreasing function of r (when financing costs are high people are less likely to build more capacity)
- Investment is an increasing function of aggregate expenditure (stronger demand means more investment spending)
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is G relative to AE?
- Government spending is an increasing function of aggregate expenditure
- Because taxes are
- Govt expenditure is treated as exogeneous ie simply determined externally
- Therefore fiscal balance will increase as AE decreases and decreases as AE increases (surplus)
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the relation of net trade balance to domestic, foreign income and the fx rate?
- Decreasing function of domestic income, because increasing domestic income makes our products more expensive and others relatively cheaper, incentivising imports
- Increasing function of foreign income, because of the opposite effect
- negatively related to the fx rate, because as fx rate goes up it means our currency is strengthening.
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is aggregate demand?
The Q of G&S that households, businesses government and intl customers want to buy at ANY given level of prices
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Why is the AD curve downward sloping?
- Wealth effect: a rise in the general price level (P1 to P2)
decreases the quantity of G&S that can be purchased with a fixed Q of nominal wealth
ie consumer are less wealth and therefore demand fewer G&S - Interest rate effect: as P changes, D for money changes (increase & increase). Since the money supply is fixed, the price of money increases. The price of money = the interst rate. As P decreases, less demand to hold money, more investment, so bond brices increases and r decrease.When P increases, more demand to hold money, less investment, so bond prices decrease and r increases/ As r increases businesses invest less and consumers buy less durable goods. In total P increasing drives r up, leading to lower AD.
- Real FX rate: As P increases real FX rate increases. This makes domestic G&S more expensive abroad reducing exports. This also makes foreign goods less expensive raising imports. Therefore the trade balance decreases. Recall that when P increases r increases: so capital inflows increase demand for local currency and thus increase real FX rate.
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the impact of higher price level on wealth, r and real fx rate?
- Real wealth declines
- Higher money demand means higher r, therefore fewer profitable investments and fewer large (financed) consumer purchases, plus higher fund inflows from abroad
- Higher real fx rate because of fund inflows from abroad, making ex less competitive and im cheaper
- This causes neg impact on net exports
- Drop in AD
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What is the impact on wealth, r and real fx rate from lower price level?
- Real wealth increases
- Lower money demand leads to lower r, increasing no of profitable investmnets and more financed consumer purchases
- Then reduced fund inflows from abroad weaken the fx rate and have a positive impact on exports
- Real fx rate depreciates making exports competitive and imports expensive
- Rise in AD
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Are costs variable in the short run?
- No, only labour, because in the very SR only working more or less is the response
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Why do prices keep rising over time?
- Prices slowly rise to take into account increasing input costs
- Output falls back to the mean reverting level in the economy but at a permanently higher price level
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How long is the long run?
- As long as it can be before capital becomes variable
- When capital becomes variable this is the “very long run”
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
Does demand lead supply or supply lead demand?
- Generally demand leads supply
- However the exception is in supply shock
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What draws out the business cycle?
- Expansions and contractions of the aggregate demand curve (which cause short run fluctuations of real GDP)
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How do we anticipate and measure shifts in AD?
- Household wealth: when investments have performed well people feel wealthier and spend more, shifting AD to right
- Consumer and biz expectations: when confidence increases AD shifts to right
- Capacity utilisation: at greater than 82-85% capacity utilisation investment tends to increase as factories are deemed to be “at capacity), shifting AD to right
- Fiscal policy: if G increases or T decreases, C increases and AD shifts to right
- MP: increases in money supply shift AD to right. Money supply can increase if securities are bought from banks, the required reserve ratio is lowered, or the target r is reduced.
- Exchange rate: fx rate increases pushes AD to right as net exports increase
- Higher global growth shifts AD to right
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How would reducing central bank reserves affect the economy?
- Shift AD to left
- Equities worse as consumers consume less
- Bonds worse as interest rates increase
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What would the impact of capacity utilisation increase to 86.7% from the prev year have on the economy?
- Indicates lack of spare capacity
- Increases capital spending
- Upward pressure on interest rates
- Places inflationary pressure on the economy, MAY be bad for fixed income and good for equities but uncertain
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What economic impact would increased corporate profits have?
- Better equity market
- More investment by firms
- Shifts AD curve to right
- Increased output would have neg impact on fixed income securities
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What economic impact would govt announcing it will start to build renewables to reduce foreign oil reliance have?
- Increase in govt spending would shift AD right
- Increase in output may positively impact equities
- Neutral to negative for bonds
- The imported oil impact is too far out to have effect
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What economic impact would a recession in a foreign country have?
- Reduce demand for your exports so shift AD left
- Negative for equities particularly exporting companies
- Firm to positive for bonds
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What causes the short run aggreage supply curve to shift?
- Changes in cost of production or expected profit margins
- i.e., change in unit labour cost. changes in input proces, changes in expectations about future prices, changes in business taxes and subsidies, changes in fx rate
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What affects long run aggregate supply?
- Supply of labour (pop, participation rate, net immigration)
- Supply of natural resources
- Supply of physical capital (increased capital stock)
- Supply of human capital (higher qual labour increases potential gdp)
- Labour productivity and tech
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What happens in a recessionary gap?
- Growth of Y is below long term trend
- AD shifts left meaning lower Y and lower
- We can measure the actual size of the gap
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How do we identify a recessionary gap?
- Corp profits decline
- Commodity prices decline
- R declines
- Demand for credit declines
- All of these reduce investments in cyclucal companies, commodity oriented companies and speculative equity
- Increased investments in devensive stocks, investment grade bonds or gilts
How do we identify an inflationary gap?
- Corp profits increase
- Commodity prices increase
- R increases
- Demand for credit increases
- Inflationary pressure builds
- Increase investments in high beta stocks and high yield securities
- Would want to reduce defensive stocks, govt or IG bonds, plus long term bonds
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What happens under stagflation?
- Falling output, increasing prices
- Tf inflation
- Reduce exposure to equities AND fixed income is best
- Increase exposure to commodities and real assets (the things driving stagflation)
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What does the production function describe?
- Output is a result of total factor productivity, labour and capital
- Tech (plus organisation and knowledge) makes labour and capital more productive
- We can have constant, diminishing or increasing returns of scale with any of these inputs
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What does the capital to labour ratio describe?
- marginal output for an increase in capital will be much higher when the base capital is lower
- Thus adding capital to developing economies leads to higher growth than developed
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What does the labour to capital ratio imply for the US?
- A change in labour will have a larger effect on GDP than an increase in capital
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What are the sources of economic growth?
- Labour supply (participation rate, population, hours worked per worker)
- Human capital (ed, training, expoerience)
- Physical capital stock
- Technology (the most important factor as it allows economies to overcome the limits imposed by diminishing marginal returns)
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
How do you take into account change in TFP?
- Discount changes in capital and labour, since change in technology/TFP cannot be measured directly
2024 L1 EC PREREQ3 – Aggregate Output, Prices, and Economic Growth
What are the fluctuations in employment over biz cycles?
- Recovery: layoffs slow. Businesses use overtime before hiring. Unemployment remains high
- Expansion: businesses start hiring. Unemployment stabilises and starts falling
- Slowdown: hiring slows. Unemployment falls but at decreasing rate
- Contraction: hours cut and overtime eliminated. Hiring frozen, layoffs. Unemployment rises
2024 L1 EC PREREQ4 – Introduction to Business Cycles
What are the fluctuations of sales and production over biz cycles?
Recovery: sales decline slows, then recover. Production upturn but prod lags behind sales growth. Production approaches normal levels as excess inventory cleared.
Expansion: sales increase. Production rises fast to keep up + replenish inventories. This increases demand for intermediate products.
Slowdown: sales slow faster than production. Inventories increase. Econ slowdown means production cutbacks & orders cancelled
Contraction: biz produces at rates below sales volume to dispose of unwanted inventory
2024 L1 EC PREREQ4 – Introduction to Business Cycles
What are the flucations of the inventory/sales ratio over biz cycles?
Recovery: ratio begins to drop as sales recovery outpaces production
Expansion: ratio stable
Slowdown: ratio increases, signalling weakening economy
Contraction: ratio falls back to normal.
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How do biz conditions and expectations fluctuate over biz cycles?
Recovery: Excess capacity, low utilisation, little need for capacity expansion
Expansion: Capacity utilisation increases, biz happy, productive capacity begins to limit ability to respond to demand, increased inv spending thanks to higher cash flows meaning ability to
Slowdown: Peak biz conditions and health cash flow, high interest rates
Contraction: Fall in demand, profits, cash flows
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does capital spending fluctuate over biz cycles?
Recovery: low but increasing, focuses on efficiency (ie getting rid of workers), first spending is on quickly obsolescent items ie tech
Expansion: capacity expansion. New spending required as demand structure no longer matches company supply structure. Orders lead shipments so orders used as indicator of econ health
Slowdown: New orders intend to increase capacity but this is sign of potential slowdown. Companies continue to place new orders.
Contraction: New orders halted, some cancelled. Initial cutbacks sharp & may exacerbate downturn. Maintenance and heavy equipmt spending scaled back to preserve cash flow (that covers variable costs)
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How do incomes, employment and confidence move over biz cycle?
Recovery: Unemployment above average, layoffs slow, biz relies on overtime before hiring, consumer confidence starts improving
Expansion: hiring restarts, unemployment stabilises then falls. Consumer incomes rise, healthy employment prospects, confidence
Slowdown: biz continues hiring but at slower pace, unemployment continues to fall, incomes still growing, consumers remain confident
Contraction: biz cuts hours of overtime then freezes hiring then layoffs. Employment declines, consumer confidence weakens
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does spending on consumer durables (cars, motorbikes, appliances, furniture) fluctuate over the biz cycle?
Recovery: spending limited as households postpone spending
Expansion: spending increases
Slowdown: spending above average
Contraction: purchases postponed, spending decreasing
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does consumer non durable spending fluctuate over the biz cycle?
- It changes little but outperforms in slowdown and contraction
- Not because they perform well just better than other slowing/contracting sectors
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does services spending (entertainment, eating out, comms, personal services) fluctuate over the biz cycle?
Recovery: Spending below avg
Expansion: Spending increases
Slowdown: Above average
Contraction: Declines
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How can we look at household income?
- Either disposable income pos related to spending on durables
- Or permanent income: this excludes temp income and unsustainable losses and gains
- The latter component correlates well with non discretionary spending
2024 L1 EC PREREQ4 – Introduction to Business Cycles
What signals do household savings send RE biz cycles?
- Higher savings may indicate future caution
- Stock of savings may indicate future consumption potential, WITHOUT a need for rising incomes!
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does the housing sector behave over biz cycles?
- new/existing home sales can indicate demand size
- Building permits can indicate supply side ie construction activity
- Housing Price Index gives clue to position in cycle
- Low rates support prices and construction rises
- Rising incomes cause housing price rise
- Rates rise when income / avg price ratio is LOW, construction drops
- Late buyers buying off momentum and speculation indicate slowdown
2024 L1 EC PREREQ4 – Introduction to Business Cycles
How does external trade sector behave over biz cycles?
- Imports peak at top of biz cycle
- Imports drop to min at trough
- Exports drop at peak due to higher relative cost to other countries
- Exports rise during trough and recovery
- These mostly affect primary trading partners
- FX rates can help boost exports. Low rates encourage exports discourage imports
- However short term FX has minimal effects due to hedging, needs to move in one direction for some period of time
- Trade balance data can help measure this
What are the terms for un/employment?
- Employed: those with job
- Labour force: those with a job + those looking for one
- Uemployed: those without a job but looking
- Long term uemployed: 3-4 months but still looking
- Frictionally unemployed: natural movement from job to job
- Unemployment rate: unemployed / labour force
What is a price wage inflationary spiral?
- Where there are few available workers plus escalators (ie yearly raises built into employment contracts) tied to CPI
- Can only occur under low unemployment
2024 L1 EC PREREQ4 – Introduction to Business Cycles
When can unemployment increase when economic conditions are still good?
- When labour force grows because no of people looking for a job who prev weren’t increases
- This can actually indicate economic optimism
2024 L1 EC PREREQ4 – Introduction to Business Cycles