Information sources and beliefs about ethnic discrimination
Last registered on December 03, 2018

Pre-Trial

Trial Information
General Information
Title
Information sources and beliefs about ethnic discrimination
RCT ID
AEARCTR-0003500
Initial registration date
October 29, 2018
Last updated
December 03, 2018 1:30 AM EST
Location(s)
Region
Primary Investigator
Affiliation
CERGE-EI, a joint workplace of Charles University and the Economics Institute of the Czech Academy of Sciences, Politických vězňů 7, 111 21 Prague, Czech Republic
Other Primary Investigator(s)
Additional Trial Information
Status
On going
Start date
2018-10-29
End date
2019-06-01
Secondary IDs
Abstract
In a randomized survey experiment, we investigate how exogenously manipulated information sources affect people's beliefs about ethnic discrimination and their attitudes to ethnic minorities. In addition, our study examines from which sources people prefer to receive discrimination-related information. The experiment will be conducted with a large sample representative of the Czech population, and it has two waves. Subjects will be randomly divided into five subsets. In the first wave, three subsets of participants will receive information from one of three sources about local discrimination against a job seeker with an Asian-sounding name. The fourth subset of subjects (Control group) will see placebo information while remaining participants will be given an opportunity to choose one of three information sources. In the second wave (obfuscated follow-up), which will take place on average seven days after the first wave, we will assess the persistence of potential treatment effects on participants' beliefs and attitudes.
External Link(s)
Registration Citation
Citation
Korlyakova, Darya. 2018. "Information sources and beliefs about ethnic discrimination." AEA RCT Registry. December 03. https://www.socialscienceregistry.org/trials/3500/history/38210
Experimental Details
Interventions
Intervention(s)
See pre-analysis plan
Intervention Start Date
2018-10-29
Intervention End Date
2018-12-31
Primary Outcomes
Primary Outcomes (end points)
See pre-analysis plan
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
See pre-analysis plan
Experimental Design Details
Randomization Method
Randomization done by the company which we use to recruit subjects (in office by a computer)
Randomization Unit
Individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
3200 subjects in the main experiment and approximately 2176 subjects in the follow-up survey
Sample size: planned number of observations
3200 subjects in the main experiment and approximately 2176 subjects in the follow-up survey
Sample size (or number of clusters) by treatment arms
Control group: around 640 individuals
Treatment group I: around 640 individuals
Treatment group II: around 640 individuals
Treatment group III: around 640 individuals
Treatment group IV: around 640 individuals
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
CERGE Ethical Committee
IRB Approval Date
2018-08-27
IRB Approval Number
N/A
Analysis Plan

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Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers