Chapter 7 - Economic Welfare and Income Distribution

CHAPTER 7: Economic Welfare and Income Distribution

Overview of Economic Welfare
- Economic welfare consists of the benefits gained by consumers and producers through market transactions.
- Key concepts include:
  - Consumer Surplus: Satisfaction gained by consumers from purchasing at a lower price than they are willing to pay.
  - Producer Surplus: Profit earned by producers when they sell at a price higher than their minimum acceptable price.

Consumer Surplus
- Illustrated via demand curves showing willingness to pay. For instance, a consumer willing to pay more than the market price gains surplus.
- Example of pizza consumption:
  - Willing to pay $14 for the first pizza, leading to a surplus when paid $10.
Producer Surplus
- Identifies the difference between the price received and the minimum price producers would accept.
- Example of pizza production:
  - If a producer would accept $6 for a pizza but sells it for $10, the surplus is $4.

Spillover Effects: External effects of economic activities affecting third parties.
- Spillover Costs: Negative externalities (e.g., pollution from production).
- Spillover Benefits: Positive externalities (e.g., education).

Governments implement regulations, taxes, or subsidies to manage spillover effects.
Example: Tax on Gasoline
- Introduces an additional cost that leads to a new equilibrium, aligning market price with true social costs (private + public).

Excise Tax: A tax levied on specific goods, impacting the market by increasing consumer prices and reducing quantity bought.
- Effects of Taxation: The division of tax burden between consumers and producers depends on the elasticity of demand and supply.
  - Inelastic demand generally means consumers bear more tax burden, while elastic demand shifts burdens to producers.

Price Control Mechanisms: Governments may set price floors or ceilings to manage market prices.
- Price Floors: Minimum prices (e.g., agricultural support prices) lead to surpluses.
- Price Ceilings: Maximum prices (e.g., rent controls) lead to shortages.

Price supports benefit producers through higher revenue but harm consumers through increased prices.
Rent controls help some tenants but may hurt landlords and reduce available rental units.

Income Inequality: Income distribution varies among households, measured using the Lorenz curve and Gini coefficient.
- Lorenz Curve: Visual tool illustrating income distribution among households, with greater bowing indicating higher inequality.
- Gini Coefficient: A single measure indicating the degree of income inequality, ranging from 0 (perfect equality) to 1 (perfect inequality).

Differences in wages are influenced by productivity, education, experience, and job conditions.
Market Power: Presence of unions can enhance wage negotiations.
Discrimination and geographic disparities affect wages across demographic lines.
Wealth Distribution: Wealth accumulation leads to greater inequality, often inherited rather than earned.