1.2 How Markets Work Flashcards
What is the aim of rational consumers in economic decision making?
To maximise utility
Utility is the satisfaction gained from consuming a product.
What do firms aim to maximise in rational economic decision making?
Profit
Firms are assumed to be run for their owners and shareholders.
What is the goal of governments in rational economic decision making?
To maximise social welfare
Governments work for the public and aim to increase public satisfaction.
What is demand in economic terms?
The ability and willingness to buy a particular good at a given price and time.
What causes a movement along the demand curve?
A change in the price of the good.
What is a contraction in demand?
A movement along the demand curve due to an increase in price, leading to a fall in quantity demanded.
What is an extension in demand?
A movement along the demand curve due to a decrease in price, leading to a rise in quantity demanded.
What does a shift from D1 to D2 on the demand curve indicate?
A decrease in demand.
What does a shift from D1 to D3 on the demand curve indicate?
An increase in demand.
What mnemonic can help remember the conditions of demand?
PIRATES.
What does the ‘P’ in PIRATES stand for?
Population.
How does income affect demand for most goods?
If income increases, demand increases.
What are complements in economic terms?
Goods that are used together, such as DVDs and DVD players.
What are substitutes in economic terms?
Goods that can replace each other, such as Nike and Adidas trainers.
What effect does successful advertising have on demand?
It is likely to increase demand.
How does taste or fashion influence demand?
If something becomes more fashionable, demand increases; if less fashionable, demand falls.
What impact do expectations have on demand?
Expectations of future prices can increase or decrease current demand.
What is the law of diminishing marginal utility?
The satisfaction derived from consuming an additional unit of a good decreases as more of the good is consumed.
What does the demand curve slope downward indicate?
The inverse relationship between price and quantity demanded.
What is price elasticity of demand (PED)?
The responsiveness of demand to a change in the price of the good.
What is unitary elastic PED?
When PED=1: quantity demanded changes by exactly the same percentage as price.
What is relatively elastic PED?
When PED>1: quantity demanded changes by a larger percentage than price.
What is relatively inelastic PED?
When PED<1: quantity demanded changes by a smaller percentage than price.
What is perfectly elastic PED?
When PED=infinity: a change in price means that quantity demanded falls to 0.
What is perfectly inelastic PED?
When PED=0: a change in price has no effect on quantity demanded.
What factors influence price elasticity of demand?
- Availability of substitutes
- Time
- Necessity
- Percentage of total expenditure
- Addictiveness
What happens to tax incidence when demand is elastic?
Lower incidence of tax on the consumer.
What happens to tax incidence when demand is inelastic?
Higher incidence of tax on the consumer.
What is income elasticity of demand (YED)?
The responsiveness of demand to a change in income.
What defines an inferior good in terms of YED?
YED<0: a rise in income leads to a fall in demand.