How does social benefit differ from private benefit?

How does social benefit differ from private benefit?

• A. Private benefit is what the individual producer/user receives.
• B. Social benefit equals private benefit minus external benefits.
• C. Social benefit equals private cost.
• D. Social benefit equals private benefit plus external benefits; private benefit is what the individual producer/user receives.

Answer: (D)

The main idea is that social benefit captures all the advantages a good or activity provides to society, not just what the individual who makes the decision gains. Private benefit is the direct payoff to the person or firm involved. When there are positive externalities, others outside the decision gain additional benefits without paying for them. Social benefit adds these external benefits to the private benefit, so it is private plus external. That’s why the correct statement says social benefit equals private benefit plus external benefits, and private benefit is what the individual producer or user receives. Subtracting external benefits or equating social benefit with private cost would misstate how the total societal value is measured.

The main idea is that social benefit captures all the advantages a good or activity provides to society, not just what the individual who makes the decision gains. Private benefit is the direct payoff to the person or firm involved. When there are positive externalities, others outside the decision gain additional benefits without paying for them. Social benefit adds these external benefits to the private benefit, so it is private plus external. That’s why the correct statement says social benefit equals private benefit plus external benefits, and private benefit is what the individual producer or user receives. Subtracting external benefits or equating social benefit with private cost would misstate how the total societal value is measured.