ECONPLUSDAL THEME 3 Flashcards
Short run
When there is at least one fixed factor of production
Law of Diminishing Returns
In the short run, when variable factors of production are added to a stock of fixed factors of production, total/marginal product will initially rise and then fall.
Rise: Labour productivity is increasing (specialisation/DoL takes place; stops underutilisation of fixed factors of production)
Fall: Labour productivity is decreasing (fixed factors of production constrain production)
Long Run
When all factors of production are variable
Explicit costs
Fixed costs - do not vary with output e.g. rent, salaries, interest on loans, advertising, business rates
Variable costs - vary with output e.g. wages, utility bills, raw material costs, transport costs
Implicit costs
Opportunity costs
Returns to scale
% change of output relative to % change of input
Increasing returns to scale
When long-run average total cost declines as output increases due to economies of scale
Decreasing returns to scale
When long-run average total cost increases as output increases due to diseconomies of scale
Minimum efficient scale
The level of output at which all economies of scale are exhausted. The point on the LRAC curve where increasing returns to scale end, and constant returns begin
Economies of scale
A reduction in LRAC as output increases
Types of economies of scale
Internal: Really Fun Mums Try Making Pies
Risk Bearing
Financial
Managerial
Technical
Marketing
Purchasing
External:
Better transport infrastructure
Component suppliers move closer
R&D firms move closer
e.g. motorsport valley UK; Silicon Valley; Biomedical science in Cambridge (Astra Zeneca relocted HQ there)
Diseconomies of scale
An increase in LRAC as output increases
Types of diseconomies of scale
3Cs and an M
Control
Communication
Coordination
Motivation
Characteristics of perfect competition
Many buyers and sellers
Homogeneous goods
Firms are price takers
No barriers to entry and exit
Perfect information
Firms are profit maximisers
Allocative, Productive, X efficiency
No dynamic efficiency
Accounting Profit
Total Revenue - Total Costs (explicit only)
Economic Profit
Total revenue minus total cost (includes explicit and implicit costs)
Normal profit
0 economic profit
Supernormal profit
Any economic profit above normal profit - also known as abnormal profit
Subnormal profit
Negative economic profit
Profit maximisation
MR=MC
Can use COST PLUS PRICING but fails against competition
draw diagram
Reasons for profit maximisation
Allows reinvestment
Provides high dividends for shareholders
Lower costs and lower prices for consumers
Reward for Entrepreneurship
Reasons against profit maximisation
Knowledge of MR=MC
Greater scrutiny
Key stakeholders harmed (leads to satisficing instead)
Non-profit organisation e.g. NSPCC
Other objectives more appropriate
Profit satisficing
Between MR=MC and AR=AC
Sacrificing profit to satisfy as many key stakeholders as possible
Stakeholders affected by profit satisficing
Shareholders
Managers
Beneficiaries:
Consumers
Workers/TUs
Government
Environment groups