Economics Flashcards
Perfect Competition
Number of Firms - Many
Barriers to entry - Very low
Substitutes - Many
Competition - Price only
Price power - None
- Demand Curve: Perfectly elastic (horizontal) at the market price.’
- If you try to increase price, you wouldn’t sell anything
Imperfect Competition
Price is a variable under the firms control and is a function of quantity (monopoly)
Price searcher firms
- priceis not fixed but varies depending on the quantity produced by the firm.
- This gives the firm pricing power , meaning it can influence the price by adjusting its output levels.
- Amonopolyis given as an example where a firm has significant control over pricing due to lack of competition.
TR = TC : Breakeven
TC > TR > TVC : continue in short run, shut down in long run
TR< TVC : shutdown in short and long run
Economies and Diseconomies of Scale
SRATC Curve - short run average total cost for a specific plant size or scale of operation
Business Cycles: Expansion
Expansion:
- Real GDP increases consistently
- Growth rate is above average
- Positive output gap
- Prices rise, interest rates start to increase to keep up with inflation
As economy nears peak - growth rates of spending, investment, employment may slow down but remain positive, inflation begins to rise
- Imports increase because there is a strong domestic economy
Business Cycles: Peak
Peak:
- Positive output gap that begins to narrow
- Economy starting to overheat - because lenders have opened their doors and gone easy in terms of lending
- The highest point in the cycle where real GDP stops increasing and starts to decline
- Turning point between expansion and contraction
- Hiring starts to slow down even though unemployment is low
Business Cycles: Contraction (Recession)
Contaction:
- Real GDP decreases, indicating downturn in economy
- Recession if GDP growth rate is negative for 2 consecutive quarters
- decreased employment, consumer spending, and investment.
- Hours worked falls
- Hiring freezes
- Unemployment rises
- Inflation slows down (may start to reverse)
Business Cycles: Trough
Trough:
- Negative output gap
- Lowest point in the cycle
- real GDP stops decliningand starts to rise again
- High unemployment rate - rather than hire new employees, employers will wait and see, may increase hours worked increase, temp workers
- Layoffs slow down
- Spending may rise on consumer durable/luxury goods (homes, cars, lux items) and housing may rise - economic activity starts to rise - also plans for construction - expansions
- Moderate decrease inflation rate
- This phase marks the beginning of anew expansionorrecovery phase.
Leading Economic Indicators
- Change direction before the overall economy, signaling future peaks or troughs.
- Examples include stock market returns, new business orders, and consumer confidence indices.
- They signal whats to happen beforehand
- Example of Stock Markets, House prices, Consumer expectations
Coincident Economic Indicators
- Move in sync with the economy, reflecting current conditions.
- Examples include GDP, employment rates, and retail sales.
- Kind of like looking out the window and seeing whats happening right now
- This is called “Now-Casting” - looking at whats happening right now
Lagging Economic Indicators
- Change direction after the economy has entered a new phase, confirming changes.
- Examples include unemployment rates and business spending on equipment
- The change of direction after the change has already happened
- Something that is already underway
Fiscal Policy
Defined as thegovernment’s use of spending and taxationto influence economic activity.
Fiscal policy can also be used forredistribution of income and wealth
- Influencing Economic Activity: Adjusting government spending and taxes to manage aggregate demand and stabilize economic cycles.
- Redistributing Wealth and Income: Using tax and welfare policies to adjust income distribution.
- Allocating Resources: Guiding resources among sectors to address priorities like infrastructure, healthcare, or education.
Expansionary Fiscal Policy
Increasing deficit (or decreasing surplus) boosts GDP by increasing government spending or reducing taxes.
This increases the budget deficit and increases aggregate demand
Contractionary Fiscal Policy
Reducing deficit (or increasing surplus) slows GDP growth by reducing spending or increasing taxes.
This decreases the budget deficit and decreases aggregate demand
Monetary Policy
Controlled by thecentral bank, focusing onmanaging money supply and credit.
set of actions undertaken by a central bank to manage the money supply and interest rates in an economy. Its main goal is to influence macroeconomic factors such as inflation, employment, and economic growth
price stability and economic growth
Primary Tools: Interest rates, open market operations, reserve requirements
Speed of implementation is faster than fiscal as central banks act independently
shorter lag time
Expansionary (Easy) Monetary Policy
Increasing money supply and credit to stimulate the economy.
Contractionary (Tight) Monetary Policy
Reducing money supply and credit to slow economic activity.
Fiscal Policy Tools
Spending tools:
Transfer payments: Redistributes income, such as unemployment benefits and social security. These payments do not count toward GDP.
Current Spending: Routine government expenses for goods and services
Capital Spending: Investment in infrastructure (e.g., roads, bridges, schools) to boost future economic productivity. - ‘Multiplier effect’ - Fiscal Multiplier - for every dollar spent, it will be multiplied up like a ripple effect in the economy and the benefit will be far larger than the actual spend itself.
Goals of Spending Tools:
- Provide essential public services (e.g., defense).
- Invest in infrastructure to support economic growth.
- Directly support economic targets like reducing unemployment.
- Ensure a minimum standard of living.
- Subsidize R&D in areas aligned with long-term goals (e.g., green technology).
Fiscal Multiplier
For every dollar spent in the economy, it will have an even higher impact than that 1 dollar; creates a “ripple effect”
Fiscal Multiplier = 1 / 1 - MPC (1-t)
Ex)
MPC = 0.8
t = 0.25
$100bn spending increase
1 / [1-0.8 (1-0.25)] x $100 = $250 Billion increase in consumption
Revenue Tools
- Direct Taxes: Levied on income and wealth, including income tax, corporate tax, and Social Security taxes. These are often progressive and can aid in wealth redistribution.
- Indirect Taxes: Levied on goods/services, such as sales tax, VAT, and excise taxes. Used to influence consumption (e.g., higher taxes on tobacco).
Tax Multiplier
Changes in taxes also have a multiplied effect on aggregate demand
MPC = 0.8
Tax increase of $100 Bn
This will reduce consumtion by = 0.8 x 100 = $80 Billion
Crowding out
refers to the possibility that government borrowing causes interest rates to increase and private investment to decrease. If government debt is financing the growth of productive capital, this should increase future economic growth and tax receipts to repay the debt.
Ricardian equivalence
is the theory that if government debt increases, private citizens will increase savings in anticipation of higher future taxes, and it is an argument against being concerned about the size of government debt and budget deficits
Role of Central Bank
- Regulating Money supply
- Setting interest rates
- Managing inflation and price stability
- Promoting employment
- Ensuring financial stability
- Managing exchange rates
- Banker to the government
- Lender of last resort
- Holder of gold and foreign currency reserves
Tools of Monetary Policy
- Open market operations - Buying and selling government securities in the open market to influence liquidity and interest rates.
- Policy Interest Rates - - Adjusting benchmark rates (e.g., the discount rate or repo rate) to influence lending rates across the economy.
- Reserve Requirements:
- Setting the minimum reserves that banks must hold, impacting their ability to lend.
- Quantitative Easing (QE) and Tightening (QT):
- QE: Injecting liquidity into the economy by purchasing long-term securities.
- QT: Removing liquidity by selling securities or allowing them to mature without reinvestment.
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Forward Guidance:
- Communicating the expected path of future monetary policy to influence market expectations and economic behavior.