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Public Economics Lectures Part 1: Introduction

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Behavioral Welfare <strong>Economics</strong>: Two Approaches<br />

Approach #1: Build a positive model of deviations from rationality<br />

Ex: hyperbolic discounting, bounded rationality, reference dependence<br />

Then calculate optimal policy within such models<br />

Approach #2: Choice-theoretic welfare analysis (Bernheim and<br />

Rangel 2009)<br />

Do not specify a positive model to rationalize behavior<br />

Instead map directly from observed choices to statements about welfare<br />

Analogous to “suffi cient statistic” approach<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 3: Effi ciency 85 / 105

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