1.2 Flashcards
(37 cards)
What does rational mean?
Economic agents are able to consider the outcome of their choices and recognise benefits
What is demand?
What customers desire backed up with the ability to buy
What are the effects of demand?
Substitution effect:
-As price of a product decreases, it becomes more attractive to other similar products. Consumers are more likely to switch to the cheaper option leading to an increase in quantity demanded
Income effect:
-When price of a product falls, consumers effectively have more purchasing power which leads to an increase in quantity demanded
Diminishing marginal utility:
-As people consume more of a particular product, the extra satisfaction they derive from each additional unit will start to diminish so consumers are willing to pay less for each unit
Types of demand
Effective demand - Demand that is backed up with the ability to pay
Derived demand - Demand for a FoP that is used to produce another good/service
Composite demand - Where goods have more than one use
Joint demand - Where demand for one product is directly and positively related for demand for another good
What causes movement and shifts along the demand curve?
Shifts - Changes in income, taste/fashion, population, substitutes, government policy and advertising
Movement - Price change
What is supply?
The quantity of goods and services that producers are willing and able to supply at a given price in each time period
Factors that shift supply
Nature conditions
Unexpected events
Changes in productivity of labour
Technology
Government policy
What is PED?
PED measures the responsiveness of quantity demanded when there is a change in price
What is the formula for PED?
PED = %QD / %P
Values of PED
0 = Perfectly inelastic
-Qd is completely unresponsive to a change in price
0-1 = inelastic
-Qd is less than proportional to price
1 = unitary
-Qd is equal to price
1 - infinite = Elastic
-Qd reacts strongly to price change
Infinite = Perfectly elastic
-Qd will fall to 0 with any change in price
Factors influencing PED
Availability of substitutes
-High availability means high PED
Addictiveness of products
-Addictiveness turns products into habits resulting in low PED
Time period
-In short term, consumers are less responsive to a change in price resulting in a low PED
-In long term, consumers may feel the price increase more and look for substitutes, resulting in high PED
What is YED?
YED measures the responsiveness of quantity demanded for a good when income changes
Values of YED
0-1 = Normal necessity
-Demand increases less when income increases
-Income is inelastic
YED > 1 = normal luxury
-Demand increases proportionality more when income increases
-Income is elastic
YED < 0 = Inferior good
-Demand decreases as income increases
Factors influencing YED
-During a recession, income falls so demand for inferior goods rises and demand for normal goods fall
-During a period of economic growth, demand for normal goods rise and demand for inferior goods fall
What is XED?
Measures the responsiveness of quantity demanded of one good to a change in price of another related good
Values of XED
XED < 0 = Complementary goods
-Negative value means two goods are complements
-The higher the value, the stronger the relationship
XED > 0 = Substitutes
-Positive value means two goods are substitutes
-The higher the value, the stronger the relationship
XED = 0 = Unrelated goods
What is PES?
Measures the responsiveness of quantity supplied to a change in price
Values of PES
0 = Perfectly price inelastic
-Qs is unresponsive to a change in price
0-1 = Relatively price inelastic
-Qs is less than proportional to a change in price
1-infinite = Relatively price elastic
-Qs is less proportional to a change in price
infinite = perfectly price elastic
Factors influencing PES
Mobility of FoPs
-If producers switch between producers products, PES will be price elastic
Availability of raw materials
-If raw materials are scarce, PES will be low
Spare capacity
-If there is spare capacity, supply will be price elastic
Where is excess demand?
Excess demand is where price is set below equilibrium
There is a shortage in the market so firms can charge higher prices and still sell their goods
Where is excess supply?
Where price is set above equilibrium
Firms have unsold goods. This will encourage them to put these goods on sale, causing price to fall
What is the price mechanism used for?
To allocate resources
What are the price mechanisms?
Rationing function - Limited resources can be rationed and allocated to the people who are able to afford them
Signalling function - Acts as a signal where resources should be used
Incentive function - Acts as an incentive for people to work hard. Buyers realise the more money they have, the more products able to be bought
Example of Local markets in context with price mechanism
During the pandemic for British supermarkets, less imports from other countries meant fewer goods on shelves. All demand for food is high and supply is low, there is excess demand so only consumers who value food highly buy it. This is rationing function