ECON1101 Lecture Notes - Lecture 3: Coase Theorem, Deadweight Loss, Externality
Wednesday, 17 May 2017
Microeconomics
Externalities
-Positive Consumption Externality: Benefit accrued to someone who is not involved in
the consumption of a given good
•E.g. vaccinations, education, bike/walk to work, fitness activities
-Consumption decision without consideration for external benefit doesn’t allow
maximum social surplus (deadweight loss) - Invisible Hand Principle FAILS
-Coase Theorem: If trade in an externality is possible & there were no transaction
costs, bargaining will lead to an efficient outcome regardless of initial allocation of
property rights - in the case of NO government
-Negative Production Externality: Cost incurred by someone who is not involved in
production of a given good
•E.g. harmful production activities (pollution), excessive risk-taking, over-fishing
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