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

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
October 29, 2018, 5:03 PM EDT

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

Last updated
December 03, 2018, 1:30 AM EST

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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://doi.org/10.1257/rct.3500-2.0
Former 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

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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