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NEW UPDATE: Completed trials may now upload and register supplementary documents (e.g. null results reports, populated pre-analysis plans, or post-trial results reports) in the Post Trial section under Reports, Papers, & Other Materials.
Covid-19 and Europeans’ Attitudes Towards EU Intervention
Last registered on August 13, 2020

Pre-Trial

Trial Information
General Information
Title
Covid-19 and Europeans’ Attitudes Towards EU Intervention
RCT ID
AEARCTR-0005952
Initial registration date
June 02, 2020
Last updated
August 13, 2020 6:30 AM EDT
Location(s)
Region
Region
Region
Region
Primary Investigator
Affiliation
Max Planck Institute for Tax Law and Public Finance
Other Primary Investigator(s)
PI Affiliation
University of Stirling, KU Leuven
PI Affiliation
University of Milan, Bocconi University
PI Affiliation
University of Turin, Bocconi University
PI Affiliation
Max Planck Institute for Tax Law and Public Finance
Additional Trial Information
Status
Completed
Start date
2020-06-02
End date
2020-06-19
Secondary IDs
Abstract
We investigate the causal impact of the covid-19 epidemic and of the countermeasures adopted to contain it on individuals' attitudes towards the European Union and its intervention in the national economies. We run a survey experiment in Italy, Germany, Spain and the Netherlands.
External Link(s)
Registration Citation
Citation
Daniele, Gianmarco et al. 2020. "Covid-19 and Europeans’ Attitudes Towards EU Intervention." AEA RCT Registry. August 13. https://doi.org/10.1257/rct.5952-1.3.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2020-06-02
Intervention End Date
2020-06-19
Primary Outcomes
Primary Outcomes (end points)
See attachment.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We randomly vary whether the respondents in our survey answer Covid-19 related questions (Covid-19 prime) before answering our target questions (attitudes towards the European Union and its intervention in domestic economies, social and political attitudes, etc. See attachments for details).
Experimental Design Details
Randomization Method
Electronic on survey engine.
Randomization Unit
individual.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
8000 (2000 per country)
Sample size: planned number of observations
8000 (2000 per country)
Sample size (or number of clusters) by treatment arms
4000 per treatment; 1333 per sub-treatment: [health, economic, conflict rethoric] X [covid prime]. See attachment for details.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
MDE=0.12 at alpha=0.05 and power=0.8 on standardised outcome measures in within country analyses.
Supporting Documents and Materials
Documents
Document Name
Survey questionnaire
Document Type
survey_instrument
Document Description
Complete survey questionnaire
File
Survey questionnaire

MD5: 60419c47bc703dc044a26b420bf21636

SHA1: 217f92bf83705878c114ac3d849fd2dba7882a03

Uploaded At: June 02, 2020

IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Ethics Council of the Max Planck Society
IRB Approval Date
2020-05-08
IRB Approval Number
2020_13
Analysis Plan
Analysis Plan Documents
EU covid pap

MD5: eefd40bd5add2b1e7c433df1d011fc7b

SHA1: 44ffb16944eb8f330d147ef51d0efed7b620dc5e

Uploaded At: June 02, 2020

Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
June 19, 2020, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
June 19, 2020, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS