Study Guide on Competitive Markets and Demand-Supply Dynamics

Competitive market is defined by the presence of multiple buyers and sellers in a product market.
In such a market, the power of pricing is not held by a single buyer or seller.
- Example: The Seattle fish market showcases that even the best chef does not dictate price alone; many chefs are potential buyers.

Buyers and Sellers: A competitive market includes many participants, ensuring no one can set the price.
Non-Competitive Markets: Defined by the presence of one dominant buyer (monopsony) or seller (monopoly).
- Dominant buyers can negotiate lower prices due to their substantial purchasing power.
- Example: A monopsonistic market would provide the buyer with the ability to dictate terms.

Market behavior determines pricing, where price is established based on collective buying and selling actions.
- Price Taker Market: All buyers and sellers are price takers, meaning they accept the market price determined by supply and demand dynamics.

Students must learn to graph supply and demand to analyze and respond to economic questions effectively.
- **Axes in Graphing:
- Vertical Axis (Y-axis): Represents price, denoted as P.
- Horizontal Axis (X-axis): Represents quantity, can be referred to as Q.
- Origin: The intersection of Y and X axes, representing zero quantity and price.

Demand Curve: Generally downward sloping, verifying a negative relationship between price and quantity demanded.
- As price increases, the quantity demanded decreases and vice versa.
Mathematical Principle: The curve illustrates that for every price point, there exists a unique quantity demanded.
Demand Function: Mathematically, the demand curve represents a function with a negative slope, which is mnemonic D (downwards) = D (demand).

To read the demand curve:
- At a specific price (e.g., $10), find the corresponding quantity demanded directly below.
- Conversely, moving from quantity to price shows the maximum price consumers are willing to pay for a defined quantity.
- Example: For 4 pounds of salmon, the maximum price willing to pay is $10.

Consumers often pay less than their maximum willingness to pay, resulting in consumer surplus.
- Consumer surplus is an economic gain achieved when paying lower than the maximum price.

Changes in Quantity Demanded: Refers strictly to movements along the demand curve in response to price changes.
- Example of economic language: "Quantity demanded has decreased" indicates a rise in price.
Demand Shifts: Demand can shift due to non-price factors which may cause an increase or decrease in demand entirely, altering the curve's position.

Increase in Demand: Shifts demand curve to the right due to factors unrelated to price.
- Possible factors: Rising incomes, trends, product substitutes, or complements.
Decrease in Demand: Shifts the demand curve to the left, often resulting from negative factors affecting demand.
- Example: If a product is perceived as inferior, increasing income may cause a decrease in its demand.

Inferior Goods: Goods for which demand decreases as consumer income rises.
Normal Goods: Goods for which demand increases when consumer income rises, representing a positive relationship.

Expectations about future prices can shift demand now without any actual price change occurring.
- For instance, if consumers expect prices to rise, current demand will increase as they buy before prices go up.

Law of Supply: States that there is a positive relationship between price and quantity supplied; more is supplied at higher prices due to increased profitability.
A decrease in price leads to a decrease in quantity supplied.

Input Costs: Major determinants for supply. An increase in input costs leads to reduced supply.
- Example: Rising labor costs can decrease supply as production becomes more expensive.
Technology: Improvement in technology typically results in increased supply by reducing production costs.
Taxes and Subsidies: Tax increases decrease supply, while subsidies can increase it by reducing operational costs.
Number of Sellers: More sellers lead to increased supply in the market; fewer sellers have the opposite effect.
Future Expectations: Optimistic forecasts can lead businesses to increase supply with anticipation of higher future prices. Conversely, pessimistic expectations can lead to decreased supply.

Equilibrium: A state where quantity supplied equals quantity demanded, resulting in market stability.
- Example: At a price of $10, there might be an equilibrium at 500 pounds of fish being sold.
Shortages and Surpluses:
- Shortage occurs when demand exceeds supply, leading to price increases to reach equilibrium.
- Surplus occurs when supply exceeds demand, leading to price decreases to clear excess inventory.

Price Floors: Minimum allowable pricing can create surpluses by preventing prices from reaching equilibrium levels.
Price Ceilings: Maximum allowable pricing can exacerbate shortages by preventing price increases when demand exceeds available supply.

Market behaviors changed significantly during crises such as COVID-19, often leading to shortages of critical products.
- Retailers sometimes opted for quantity limits instead of raising prices to manage consumer behavior about fairness during emergencies.
- Ethical considerations of fairness in pricing during a crisis raised loyalty concerns for businesses.

Understanding demand and supply dynamics forms the foundational knowledge for analyzing economic scenarios and real-world applications.
Future discussions in subsequent lessons will build on this foundational knowledge, exploring elasticity and responsiveness in economic behavior further.