Consider a strategic interaction between two countries, Country X and Country Y, regarding their emissions policies. Each can choose to 'Restrict' or 'Don't Restrict' emissions. The payoffs, representing national welfare, are shown in the matrix below (Country X's payoff is listed first). Currently, the stable outcome is for both countries to choose 'Don't Restrict'.

Which of the following changes to a single payoff would make the cooperative outcome ('Restrict', 'Restrict') a stable equilibrium where neither country has an incentive to change its strategy on its own?

Resolving a Regional Pollution Dilemma

Solving the River Pollution Dilemma

Pricing Strategy Analysis

Stabilizing Cooperation in a Business Duopoly

Calculating the Minimum Subsidy for Cooperation

An individual has a financial plan that provides them with $1,000 of consumption this year and $1,000 of consumption next year. They are then offered an alternative: they can give up $100 of consumption this year in exchange for an additional $110 of consumption next year. The individual states that they are indifferent between their original plan and this new alternative. Based on this information, what can be concluded about their time preference?

Two competing logging companies, 'TimberCo' and 'ForestCorp', share access to a single forest. If both practice sustainable harvesting ('Limit'), they each earn a profit of $10 million. If one company clear-cuts ('Don't Limit') while the other limits its harvest, the clear-cutting company earns $15 million, while the sustainable one earns only $2 million. If both companies clear-cut, the forest is quickly destroyed, and they each earn a profit of only $4 million. Currently, the incentive for each company is to choose 'Don't Limit', regardless of the other's choice. A government agency wants to intervene to make the cooperative outcome ('Limit', 'Limit') a stable equilibrium, where neither company has an incentive to unilaterally change its strategy. Which of the following policies would most effectively achieve this goal?

Consider two competing firms, Firm A and Firm B, deciding whether to set a 'High Price' or a 'Low Price'. The daily profits are shown in the payoff matrix below (Firm A's profit is listed first). Currently, the dominant strategy for both is to set a 'Low Price', leading to a suboptimal outcome for both.

A government agency introduces a policy that fines any firm choosing 'Low Price' an amount of 150.

Two companies, 'AquaClear' and 'RiverRun', operate on the same river. They must decide whether to 'Invest' in expensive water filtration systems or 'Don't Invest'. The payoff matrix below shows their annual profits in millions of dollars (AquaClear's profit is listed first). The current stable outcome is for both companies to choose 'Don't Invest'.