Economics - MICRO Flashcards
All definitions for SL MICRO Economics
Demand
Quantity of a good or service that customers are willing and able to buy at a given price, per period of time
Law of demand
that the quantity demanded of a product will fall if the price increases, and vice versa
Income effect
one of three factors accounting for the downward sloping demand curve. As the price of a product falls, consumers’ real income increases so they are able to buy more goods and services at lower prices.
Substitution effect
states that as the price of a product falls, more people can buy the product, so choose this over rival products, that is, it causes consumers to replace higher priced products with lower priced ones.
Market
any place where transactions take place between buyers and sellers.
market demand curve
refers to the sum of all individual demand for a product at each price level.
non-price determinants of demand
various factors other than the price of a good or service that affect the demand for the product
normal goods
products that customers tend to buy more of as their real income level increases. This includes both necessities and luxury goods and services.
inferior goods
products with a negative income elasticity of demand. Demand falls when real income level increases.
What are the non-price determinants of supply?
Income, tastes and preferences, number of consumers, price of related products, future price expectations
Complementary goods
products that are jointly demanded, for example, torches and batteries.
Substitutes
products that are in competitive demand because they can be used in place of each other. Like tea and coffee.
Movement along a demand curve
caused by price changes only. A fall in price causes quantity demanded to expand while an increase in price causes quantity demanded to contract.
A contraction in demand
when there is a fall in the quantity demanded for a product following an increase in price.
An expansion in demand
when there is an increase in the quantity demanded for a product following a fall in its price.
An increase in demand
rightwards shift of the entire demand curve for a product, caused by favourable changes in non-price factors that affect demand.
decrease in demand
to a leftwards shift of the entire demand curve for a product, caused by unfavourable changes in non-price factors that affect demand.
A shift of demand curve
when there is a change in non-price factors that affects the demand for a product.
Supply
Amount of a good or service that firms are willing and able to provide at any particular price, per time period.
law of supply
there is a direct relationship between quantity supplied and price, ceteris paribus.
law of diminishing marginal returns
what happens to the output of products when a firm uses more variable inputs while keeping at least one factor of production fixed. States that by employing additional variable factors of production, the marginal returns will eventually decline.
short run
a period of time when at least one factor of production is fixed. Where other factor inputs are variable.
long run
period of time when no factors of production are fixed.
Marginal cost
refers to the cost of producing an additional unit of output.