1.2.6 + 1.2.7 + 1.2.8 Flashcards
Equilibrium means
State of equality or balance between market demand supply
- no excess demand or supply
Represents a trade off for buyers and sellers - market clearing price
Demand increases means what movement in equilibrium price and quantity
Higher price
Higher quantity
Demand decreases means what movement in equilibrium price and quantity
Lower price
Lower quantity
Supply increases means what movement in equilibrium price and quantity
Lower price
Higher quantity
Supply decreases means what movement in equilibrium price and quantity
Higher price
Lower quantity
Inward shift of market supply =
Leads to a rise in equilibrium price and a contraction of market demand
Outward shift of market demand =
Leads to a rise in equilibrium price and expansion of market supply
Moving from one market equilibrium to another
• Changes in equilibrium prices and quantities do not happen instantly.
shifts in supply and demand outlined in diagrams before are reflective of changes in conditions in market.
• So, outward shift of demand initially leads to a shortage at the existing market price (i.e. there will be excess demand).
• This then leads to a short-term rise in price and a fall in available stocks. This acts as a signal to suppliers.
• higher price is then an incentive for suppliers to expand supply, causing a movement along the supply curve towards a new equilibrium point
Disequilibrium – excess demand
- Excess demand occurs when quantity demanded exceeds available supply
• Excess demand happens when current market price is below the equilibrium price. - result in queuing and upward pressure on price.
• Higher prices ration demand to those consumers with effective demand.
• Higher prices – in theory – stimulate an expansion of supply as producers respond to higher profits - little triangle under equilibrium point represents excess
Disequilibrium – excess supply
- Excess supply is a state of disequilibrium in a market.
• When supply is greater than demand and there are unsold goods in the market, there is excess supply.
• Surpluses put downward pressure on the market price.
• As prices fall, there is an extension of demand which cuts the surplus and takes a market towards equilibrium - little triangle on top of equilibrium point
What is the price mechanism?
- Changes in market price act as a signal about how scarce resources should be allocated.
- A rise in price encourages producers to switch into making that good but encourages consumers to use an alternative substitute product
(therefore rationing the product). - A fall in price leads to an extension of demand but makes it less profitable for a
business to supply the good or service affected.
Adams smith invisible hand theory
- Adam Smith described the invisible hand of the price mechanism in which the hidden hand of the market operating through the pursuit of self-interest allocated resources in society’s best interest.
- buyers want what’s best for them - quality + cheap
- producers want profit
3 main functions of the price mechanism:
Signalling function
Incentives function
Rationing function
What is the signalling function?
- when a changing price in a market sends important information to both producers and consumers
- Prices rise and fall to reflect scarcities and surpluses.
- If prices are rising because of high demand from consumers, this is a signal to suppliers to expand production to meet the higher demand.
- If there is excess supply in a market, the price mechanism will help to eliminate a surplus of a good by allowing the market price to fall
What is the Incentives function?
• Through choices consumers send information to producers about their changing nature of needs and wants.
- Higher prices act as an incentive to raise output because suppliers stand to make a better profit.
- When demand is weaker in a recession, supply contracts as producers cut back on output.