← Search

The Review of Economics and Statistics Vol. 107 No. 1 2025

Who Opts In? Composition Effects and Disappointment from Participation Payments

Sandro Ambuehl1; Axel Ockenfels2; Colin Stewart3

1 University of Zurich · 2 University of Cologne and Max Planck Institute for Research on Collective Goods · 3 University of Toronto

open access

Abstract

Participation payments are used in many transactions about which people know little but can learn more: incentives for medical trial participation, signing bonuses for job applicants, or price rebates on consumer durables. Who opts into the transaction when given such incentives? We theoretically and experimentally identify a composition effect whereby incentives disproportionately increase participation among those for whom learning is harder. Moreover, these individuals use less information to decide whether to participate, which makes disappointment more likely. The learning-based composition effect is stronger in settings in which information acquisition is more difficult.

DOI
10.1162/rest_a_01268
Volume
107
Issue
1
Pages
78-94
Language
en
Sources
bibtex:phds-export.bib openalex crossref

Cite