Nonrival — Social Studies definition
One person’s use does not reduce availability to another under stated conditions.
Where it is taught
- Externalities, Public Goods & Policy Responses — Economic Foundations & Market Decisions, Government, Civic Participation & Economics, Grade 12
In use
A public good in the economic sense is nonrival and nonexcludable under defined conditions: one person’s use does not diminish another’s, and exclusion is difficult.
Externalities, Public Goods & Policy Responses
Questions using nonrival
Problem 1
Is every government-provided service nonrival and nonexcludable?
Answer and explanation
No. Some have limited places, congestion, or eligibility restrictions. Public provision and the technical public-good category answer different questions. Classify the use and exclusion conditions rather than the payer alone.
Response criteria
- Explain the relevant institution or economic concept accurately; show correct calculations where needed.
- Connect supplied evidence and stated assumptions to an explained conclusion.
- Compare feasible options and their effects on different people without stereotypes.
- Identify a limitation, tradeoff, uncertainty, or condition that qualifies the conclusion.
Problem 2
A publicly financed classroom has only 20 places. Why is funding insufficient to call the service nonrival?
Answer and explanation
A place used by one student can reduce the places available to others at capacity. Rivalry concerns use, while public funding concerns payment. Define exclusion and conditions separately before assigning the technical category.
Response criteria
- Explain the relevant institution or economic concept accurately; show correct calculations where needed.
- Connect supplied evidence and stated assumptions to an explained conclusion.
- Compare feasible options and their effects on different people without stereotypes.
- Identify a limitation, tradeoff, uncertainty, or condition that qualifies the conclusion.