Economics: Competitive Equilibrium and Welfare
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Questions and Answers

In a General Equilibrium market, which condition states that firms combine inputs to produce a given output as inexpensively as possible?

  • Technical efficiency (correct)
  • Productive efficiency
  • Allocative efficiency
  • Equilibrium efficiency

Which view of equity focuses on maximizing the total utility of all members of society?

  • Egalitarian
  • Market-oriented
  • Utilitarian (correct)
  • Rawlsian

Within a Competitive Equilibrium in an Exchange Economy, if the price of labor (wage rate) increases, what is the likely impact on the demand for goods X and Y?

  • Increase for X, decrease for Y
  • Decrease for both goods (correct)
  • No change in demand
  • Increase for both goods

Which of the following is a key aspect of Efficiency in Production related to firms using inputs to produce output as cheaply as possible?

<p>Productive efficiency (B)</p> Signup and view all the answers

Considering the Factors Exchange in the Production model, what happens if the rental rate for capital (r) increases?

<p>Decrease in capital demand (C)</p> Signup and view all the answers

Which view of equity seeks to achieve maximum utility for the least well-off person in society?

<p>Rawlsian (C)</p> Signup and view all the answers

What does the Social Welfare Function measure?

<p>The well-being of society as a whole in terms of individual utilities (D)</p> Signup and view all the answers

Which criterion states that the Social Optimum can only be achieved in allocations on the Contract Curve?

<p>Utility Possibilities Frontier (D)</p> Signup and view all the answers

What does the Edgeworth box allow to determine?

<p>Resources allocation on the Contract Curve (A)</p> Signup and view all the answers

What characteristic makes point H inefficient on the Utility Possibilities Frontier?

<p>It lies within the shaded area (B)</p> Signup and view all the answers

In a Competitive Equilibrium, what varies along the Contract Curve?

<p>Individual utility levels (A)</p> Signup and view all the answers

What does each Social Welfare function correspond to?

<p>Equity views (A)</p> Signup and view all the answers

In a perfectly competitive market in general equilibrium, how are resources distributed?

<p>In a Pareto-efficient way (D)</p> Signup and view all the answers

What happens if the quantity offered in a market differs from the quantity demanded?

<p>Relative prices adjust until equalized (D)</p> Signup and view all the answers

What is the outcome if consumers maximize their utility in a competitive market?

<p>Achieve exchange efficiency without intervention (C)</p> Signup and view all the answers

According to the First Welfare Theorem, what will be completed if everyone trades in the competitive marketplace?

<p>All mutually beneficial trades (B)</p> Signup and view all the answers

What does the First Welfare Theorem state about the fairness of resource allocation?

<p>It doesn't address fairness in resource allocation (D)</p> Signup and view all the answers

From the consumer's perspective in a competitive equilibrium, why are indifference curves tangent?

<p>To equalize all marginal rates of substitution between consumers (A)</p> Signup and view all the answers

Study Notes

Competitive Equilibrium and Welfare

  • A choice among resource allocations in the contract curve involves a decision about the different individuals’ level of utility.
  • The Edgeworth box is used to set a criterion for achieving Social Optimum, which can only be achieved in allocations that are on the Contract Curve.
  • Individuals' levels of utility vary along the Contract Curve.

Utility Possibilities Frontier Curve

  • The curve shows all efficient allocations of resources measured in terms of the utility levels of two individuals.
  • Points on the curve (E, F, and G) represent efficient outcomes, while Point H is inefficient.

Equity and Social Welfare Functions

  • A Social Welfare Function measures the well-being of society as a whole in terms of individual utilities.
  • Four views of equity:
    • Egalitarian: equal distribution of goods.
    • Rawlsian: maximizing the utility of the least well-off person.
    • Utilitarian: maximizing total utility of all members of society.
    • Market-oriented: market outcome is the most equitable.

General Equilibrium: Production

  • Two factors of production: K (capital) and L (labor).
  • Two goods: X and Y.
  • Two consumers: A and B, who are owners of the factors of production.
  • Individuals obtain rental rates for capital (r) and wage rates for labor (w).

Efficiency in Production

  • Technical efficiency: combining inputs to produce a given output as inexpensively as possible.
  • Prices adjust until the quantity supplied equals the quantity demanded.

Competitive Equilibrium or Walrasian Equilibrium

  • Prices adjust until the quantity offered equals the quantity demanded.

The Economic Efficiency of Competitive Markets

  • First Welfare Theorem: competitive markets distribute resources in a Pareto-efficient way.
  • With exchange efficiency, consumers maximize their utility, achieving exchange efficiency without market intervention.

First Theorem of Welfare Economics

  • In a competitive equilibrium:
    • Consumers maximize their utility, taking prices as given.
    • All marginal rates of substitution between consumers are equal.

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Explore the concepts of competitive equilibrium, welfare, production, and social welfare in economics. Understand how choices among resource allocations on the contract curve impact individuals' utility levels.

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