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Public Economics Lectures Part 1: Introduction

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Feldstein 1973: First Best Solution<br />

Individual internalizes costs to insurer, so choose m based on<br />

c ′ (m) = 1:<br />

H m (m) = U X<br />

U H<br />

Optimal copayment is zero in all states<br />

Note: this assumes that marginal utility of consumption is indepenent<br />

of health state<br />

In general case, optimal to set MU sick = MU healthy , in which case<br />

copayment may be desirable.<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 184 / 207

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