Market Structures Flashcards
(148 cards)
Criteria for perfect competition
Halfpppp
Homogenous products- identical- perfect substitutes, foriegn exchange market
All firms access factor of production
Large no of buyers and sellers
Free costless entry into and exit from market
Perfectly elastic demand curve (horizontal)
Price takers- firms cannot dictate market price
Perfect knowlegde- infor for buyers and sellers
Profit max key objective- consumer utility max
Sr to lr for perfect competition
In lr- abnormal profit encourages entry for new firms- signallying mechanism
Decrease price- lras
Lr- normal profit produced ar+ac
No further incentives0 long run equilibrium
Allocative efficiency- perfect comp
Sr and lr - p=mc
Productive efficiency- percect comp
Lr, lowest point lras
X-efficency
Dynamic efficiency perfect comp
Little scope innovation- little abnormal profit to fund
Examples perfect competition
-foreign exchange- homogenous, wide range of buyers and sellers as many firms, perfect.good info about relative prices, easy to compare prices
-agricultural markets- many farmers selling identical products, many buyers available, market easy to compare prices, perfect info
-internet-price comparison websits
-insurance
Allocative efficiency def
Consumer satisfaction is maximised in production of goods and services
P=mc=ar
On ppf but what price depends consumer preference
Productive efficiency
No additional/max output can be produced from the factor inputs available at the lowest position av or unit cost
Av cost min
Ppf on the curve
At lowest ac, where ac=mc
Dynamic efficiency
Firms improve technology and production methods over a period of time
Static efficiency
When all resources are used in the most efficienct manner at a point in time (productive and allocative)
Economic efficiency
Allocative and productive efficiency at the same time
P=mc=ar=min point ac
Economic efficiwency
Allocative and productive efficiency at the same time
P=mc=ar
Innovation
Commercially sucessful exploitation of ideas
Making inventions economically viable
X-inefficiency
Occurs when a fuirm doesnt produce at lowest possible ac
May be due to lazy employers or lack real competition meaning monopolist less of an incentive to invest in new or ideas
Seen on graph as anywhere above ac
Monopolistic competition
Form of imperfect comp, as products are differentiated
Can be found in real world markets eg, taxi and mincabs, coffee shops,
Factors for monopolistic comp
Large no firms in market
No barriers to entry or exit
Each firm downward sloping demand- differentiated- goods produced partial but not perfect substitutes
Product differentaition means each firm possesses a degree of monopoy power over its product
If brand increases price, doesnt loose all competition as brand loyalty
Industry conc is low- everyone low market share
Non price differnetiation occurs
short run monopolistic comp
Normal diagram
Ar reps demand for one firm rather whole market
Demand curve likely to be more elastic- steeper
Long run- monopolistic how to draw
Draw ar and mr
Ar tangental to ac
Mc cross ac lowest point
Sr to lr monopolistic
Market structure of monopolistic comp is defined as having low barriers to entry and exit, many buyers and sellers and product differentaiation
Outcome in sr is that firms can earn abnormal profit, this outcome is noty productive or allocative efficnet
Existance sr abnormal profit is attractive to new firms
New firms enter industry as barriers to entry are low
Individ demand curve or av rev curve for incumbent (existing firms in market) shift to left as market shares are reduced
Incumbent firms av rev are cont shift left until reaches a tangent with av cost curve, normal profits covered
Lr, normal profit, not productive or allocative efficient
Productive efficiency monopolistic comp
Producing point does not cross the ac at lowest point
Saturation- unable exploit fully econ of scale
Allocative efficiency monopolistic competition
P=mc not occur
Dynamic efficiency- monopolistic comp
Occurs as differentiation occurs, some choice, limited with normal profit
Negative externalities- monopolostic comp
Social cost packaging
Heavy spending on marketing, advertising, inefficient use scarce resoucres
Monopolistic comp stable in lr?
-normal profit max in lr
In realisty stable equilibrium may not be reached,- move in state of constant flux
Product differentation ‘product life cycles’ extend w investment