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Public Economics Lectures Part 1: Introduction

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NIT Experiments: Ashenfelter and Plant 1990<br />

Present non-parametric evidence of labor supply effects<br />

Compare implied benefit payments to treated vs control households<br />

Difference in benefit payments aggregates hours and participation<br />

responses<br />

This is the relevant parameter for expenditure calculations and<br />

potentially for welfare analysis (revenue method of calculating DWL)<br />

Shortcoming: approach does not decompose estimates into income<br />

and substitution effects<br />

Hard to identify the key elasticity relevant for policy purposes and<br />

predict labor supply effect of other programs<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> ()<strong>Part</strong> 5: Income Taxation and Labor Supply 84 / 217

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