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. Author manuscript; available in PMC: 2022 May 20.
Published in final edited form as: Q J Econ. 2015 Jul 15;130(4):1623–1667. doi: 10.1093/qje/qjv029

Figure III:

Figure III:

Welfare Impact of a Copay Change: Behavioral Hazard vs. Moral Hazard Alone

Notes: Panel (a) considers the welfare impact of reducing the copay to zero when there is only moral hazard to when there is also negative behavioral hazard. Panel (b) considers the welfare impact of increasing the copay above cost when there is only moral hazard to when there is also positive behavioral hazard.