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Social Welfare Function (Definition)
A social welfare function is a function that aggregates the utility or well-being of individuals in a society to provide an overall measure of social welfare. It provides a way to rank different allocations of resources from a societal perspective, going beyond the criterion of Pareto efficiency to make judgments about equity and distribution.
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Economics
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Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
CORE Econ
Social Science
Empirical Science
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Arthur Pigou (1877–1959)
Profit-Maximizing vs. Pareto-Efficient Output Conditions
Marginal Social Benefit (MSB)
Pareto Efficiency Condition (MSC = MSB)
A city is considering several policies to address severe traffic congestion. Which of the following proposals is being evaluated primarily through the lens of welfare economics, which is concerned with how the allocation of resources affects the overall wellbeing of a society?
Analyzing a Policy Decision with Welfare Economics
A policy is proposed that significantly increases the wealth of one individual without making anyone else financially worse off. From the perspective of an economist studying how resource allocation affects societal wellbeing, this policy is unequivocally a positive development.
The Core Focus of Welfare Economics
The Dam Dilemma: Evaluating Societal Impact
Match each economic objective with the statement that best describes its primary focus. This will require you to distinguish the unique perspective of welfare economics, which is concerned with how resource allocation impacts overall societal wellbeing.
The branch of economics that assesses how the allocation of resources and goods affects the overall well-being of a society is known as ______ economics.
A town is deciding whether to approve the construction of a new factory. The factory is projected to generate substantial local employment and tax revenue but will also produce air pollution that could negatively impact the health of nearby residents. An economist is asked to assess the project. Which of the following statements best reflects an analysis based on the principles of how resource allocation affects the overall wellbeing of a society?
A government is evaluating a new policy's economic impact. Four advisors offer different primary criteria for judging the policy's success. Which advisor's criterion is most aligned with the economic analysis of how resource allocation affects overall societal wellbeing?
A government implements a new tax on luxury yachts to fund improved public parks in low-income neighborhoods. A critic argues: 'From the perspective of welfare economics, which analyzes how resource allocation affects societal wellbeing, this policy cannot be deemed an improvement because it makes the buyers of yachts worse off.' Is this critic's statement a correct application of the principles of welfare economics?
Pareto Efficiency (Definition)
Social Welfare Function (Definition)
First Fundamental Theorem of Welfare Economics
Second Fundamental Theorem of Welfare Economics
Pareto Efficiency
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An economist is evaluating two different economic policies for a society. Policy A leads to an outcome where no individual can be made better off without making someone else worse off, but results in a very unequal distribution of well-being. Policy B also leads to an outcome where no one can be made better off without harming another, but it results in a much more equal distribution of well-being. To formally compare and rank these two outcomes based on the overall good for society, which concept is specifically designed for this task?
Evaluating Policy with a Social Welfare Function
A social welfare function is a tool used to rank different societal outcomes. Its primary limitation is that it can only determine that one outcome is better than another if that outcome makes at least one person better off without making anyone worse off.
Distinguishing Societal Evaluation Criteria
Match each description of a societal objective with the principle or function that best represents it.
Choosing a Public Project
A(n) _______________ is a function used to rank different societal outcomes by aggregating the well-being of all individuals, thereby allowing for comparisons between different efficient allocations based on judgments about equity and distribution.
An economist is tasked with ranking several different, but equally efficient, distributions of resources in a society. To accomplish this task using a social welfare function, what is the most critical and unavoidable judgment the economist must make?
Choosing Among Efficient Outcomes
A policymaker is considering two mutually exclusive projects. Project Alpha generates a large increase in well-being for the wealthiest 10% of the population and a small increase for the poorest 10%. Project Beta generates a moderate increase in well-being for the poorest 10% and no change for the wealthiest 10%. The total increase in well-being across all of society is greater for Project Alpha than for Project Beta. Based on this information, which project would be chosen by a social planner whose goal is to maximize the well-being of the worst-off individual, and which would be chosen by a planner whose goal is to maximize the sum total of well-being in society?