曼昆微观经济学分册英文版 教材PPT
“Internalizing the Externality” 外部性的内在化Internalizing the externality: altering incentives so that people take account of the external effects of their actions In our example, the $1/gallon tax on sellers makes sellers’ costs = social costs. When market participants must pay social costs, market eq’m = social optimum. (Imposing the tax on buyers would achieve the same outcome; market Q would equal optimal Q.)
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