AEA RCT Registry

Field	Before	After
Trial Status	in_development	completed
Trial End Date	July 31, 2023	June 01, 2023
Last Published	December 30, 2022 05:32 AM	November 20, 2023 07:51 AM
Study Withdrawn		No
Intervention Completion Date		April 19, 2021
Data Collection Complete		Yes
Final Sample Size: Number of Clusters (Unit of Randomization)		1857
Was attrition correlated with treatment status?		No
Final Sample Size: Total Number of Observations		1857
Final Sample Size (or Number of Clusters) by Treatment Arms		Not informing partner Sender 328 Informing partner after Sender 554 Informing partner before Sender 519 Informed after Receiver 236 Informed before Receiver 220
Public Data URL		https://doi.org/10.3886/E177962V1
Is there a restricted access data set available on request?		No
Program Files		Yes
Program Files URL		https://doi.org/10.3886/E177962V1
Data Collection Completion Date		April 19, 2021
Is data available for public use?		Yes
Intervention End Date	December 31, 2021	April 19, 2021

Field	Before	After
Paper Abstract		We investigate whether a desire to influence others' choices affects our own behavior. To separate such influence motives from social pressure, we study participants' willingness to register for a COVID-19 vaccination in a field experiment in Germany. We vary whether participants' registration decisions are shared with a peer, to activate social pressure, and whether peers are informed before their own decision, to isolate influence motives. We find that influence motives double participants' registration likelihood, an effect driven by individuals with ex ante trust in the vaccine. Despite anticipating to influence their peers, participants cannot alter peer behavior in the experiment.
Paper Citation		Esguerra, Emilio, Leonhard Vollmer, and Johannes Wimmer. 2023. "Influence Motives in Social Signaling: Evidence from COVID-19 Vaccinations in Germany." American Economic Review: Insights, 5 (2): 275-91.
Paper URL		https://www.aeaweb.org/articles?id=10.1257/aeri.20220163

Fields Changed