Competition and Protests: Evidence from a Field Experiment in Berlin

Last registered on May 25, 2018
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Pre-Trial

Trial Information

General Information

Title
Competition and Protests: Evidence from a Field Experiment in Berlin
RCT ID
AEARCTR-0003017
Initial registration date
May 25, 2018

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
May 25, 2018, 10:36 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

Country
Germany
Region
Berlin

Primary Investigator

Name
Lukas Hensel
Affiliation
University of Oxford
Contact Primary Investigator

Other Primary Investigator(s)

Additional Trial Information

Status
On going
Start date
2018-05-24
End date
2018-07-31
Keywords
Other
Additional Keywords
Protests, beliefs
JEL code(s)
Secondary IDs
Abstract
We conduct an experiment in the context of a protest in Berlin on May 27th 2018. For this date, the right-conservative German party "Alternative für Deutschland" (AfD) planned a protest. Several organizations and political parties tried to mobilize their followers to rally in a counter-protest.

In the experiment we leverage differing expert opinions to exogenously shift potential protesters' beliefs about the protest turnout for both sides. We then study how the exogenous shift in beliefs affects supporters willingness to turn out at one of these protests.
External Link(s)

Registration Citation

Citation
Hensel, Lukas. 2018. "Competition and Protests: Evidence from a Field Experiment in Berlin." AEA RCT Registry. May 25. https://doi.org/10.1257/rct.3017-1.0
Former Citation
Hensel, Lukas. 2018. "Competition and Protests: Evidence from a Field Experiment in Berlin." AEA RCT Registry. May 25. https://www.socialscienceregistry.org/trials/3017/history/30021
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
We leverage differing expert forecasts to exogenously shift beliefs about turnout at two political protests.
Intervention Start Date
2018-05-24
Intervention End Date
2018-05-28

Primary Outcomes

Primary Outcomes (end points)
Willingness to take part in the respective protest, measured on a 4-point scale (see screenshots at in PAP).
Dummy for whether an individual was certain to participate in the respective protest.
Indicator whether individuals register their email address at the end of the survey.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
See pre-analysis plan for details.
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
The randomization will take place within the online survey.
Experimental Design Details
Randomization Method
Randomization within online survey.
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
Uncertain to due natural outreach methods
Sample size: planned number of observations
Uncertain to due natural outreach methods
Sample size (or number of clusters) by treatment arms
1/3*times final sample size per treatment arm. For details see PAP.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Department of Economics Research Ethics Committee (DREC)
IRB Approval Date
2018-05-15
IRB Approval Number
ECONCIA18-19-04
Analysis Plan

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Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials