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A Herd Mentality in the Design of International Environmental Agreements?
Journal Article

When addressing an externality such as air pollution, regulators can control policy inputs (e.g., pollution taxes and technology standards) or outputs (e.g., emission caps). Economists are familiar with this debate, known broadly as "prices vs. quantities," but analysts of international environmental agreements have rarely focused sustained attention to such questions. Using an inventory of all international air pollution agreements, we document the historical patterns in instrument choice.

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