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Public Economics Lectures Part 1: Introduction

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Empirical Evidence on Crowd-Out<br />

Two empirical questions motivated by theory<br />

1 How large is the degree of crowd-out in practice?<br />

2 What are the income and price effects on charitable giving?<br />

Two strands of empirical literature<br />

1 Field evidence (observational studies)<br />

2 Lab experiments<br />

Traditionally, lab experiments have been more influential but recent<br />

field studies may change this<br />

Lab experiments may not capture important motives for giving: warm<br />

glow, prestige<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 7: <strong>Public</strong> Goods and Externalities 39 / 138

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