4. Market Structure Flashcards
What is efficiency
Used to judge how well a market allocated resources, and the relationship between scarce inputs and outputs
What are the types of efficiency
Allocative, productive, x and dynamic
What is allocative efficiency
When resources are used to produce what consumers want and value most highly, social welfare is maximised. P=MC
What is productive efficiency
Products are produced at the lowest average cost so the fewest resources are used to produce each product.
Production at lowest point of AC
Dynamic efficiency
Resources are allocated efficiently over time. Investment and bringing new products and production techniques into the firm. Supernormal profit is required.
What is X-inefficiency
Failing to minimise average cost at a given level of output.not producing on the ac curve. (very similar to productive efficiency)
What is an example of perfect completion
Agriculture
What are the characteristics of perfect comp
1)many buyers and sellers
2)freedom of entry + exit
3)perfect knowledge
4)products are homogenous
5)no price setting power
Why do firms only make normal profit in the long run of perfect comp
When snp is being made in the sr, firms will join the market which increases supply and lowers price for normal profit
Perfect comp efficiency
-productively efficient
-allocatively efficient
-static efficiency (not dynamic due to not enough research or development)
-no economies of scale
What is monopolistic completion
It is between the two extremes of perfect comp and monopoly
Examples of monopolistic comp
Hair dressers, estate agents, restaurants
Monopolistic comp characteristics
-large number of buyers and sellers
-no barriers to entry or exit
-normal profit in the lr
-non-homogenous goods (some price setting power)
Why does monopolistic comp have snp in the sr
Due to the differentiated products allowing them to make snp
Monopolistic comp efficiency
-non allocatively efficient
-non productively efficient
-likely dynamically efficient (different products let’s then have advantage)
What is an oligopoly
When a few firms dominate the industry and hold majority market share
What are the characteristics of an oligopoly
-a few firms dominate
-products are differentiated
-high concentration ratio
-firms are interdependent
-barriers to entry
What does the kinked demand curve show
If a firm rises prices, they lose their competitiveness. If they drop prices, other firms will follow to stay competitive. This is why I’m oligopolies price usually stays stable
What is collusive and non collusive behaviour
-working together to maximise profits
-collusion reduces uncertainty firms face and increases security
-however it is illegal and risky
-firms with strong business models won’t collude
Where does collusion work best
-when firms are well know with eachother
-where costs and production methods are not secret
-where products are similar
-when there is a dominant firm for others to follow
-where there are high barriers
-fewer firms
How may firms collude
Prices, market share or advertising expenditure
What is overt collusion
Firms come to a formal agreement