Media Bias and the Demand for News

Last registered on February 13, 2019

Pre-Trial

Trial Information

General Information

Title
Media Bias and the Demand for News
RCT ID
AEARCTR-0003855
Initial registration date
February 05, 2019

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
February 06, 2019, 3:31 AM EST

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

Last updated
February 13, 2019, 10:21 AM EST

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

Locations

Region

Primary Investigator

Affiliation
University of Warwick

Other Primary Investigator(s)

PI Affiliation
NHH Norwegian School of Economics
PI Affiliation
University of Bonn

Additional Trial Information

Status
Completed
Start date
2019-02-04
End date
2019-02-13
Secondary IDs
Abstract
See pdf.
External Link(s)

Registration Citation

Citation
Chopra, Felix, Ingar Haaland and Christopher Roth. 2019. "Media Bias and the Demand for News." AEA RCT Registry. February 13. https://doi.org/10.1257/rct.3855-2.0
Former Citation
Chopra, Felix, Ingar Haaland and Christopher Roth. 2019. "Media Bias and the Demand for News." AEA RCT Registry. February 13. https://www.socialscienceregistry.org/trials/3855/history/41487
Experimental Details

Interventions

Intervention(s)
See pdf.
Intervention Start Date
2019-02-04
Intervention End Date
2019-02-12

Primary Outcomes

Primary Outcomes (end points)
See pdf.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See pdf.
Experimental Design Details
Randomization Method
Randomization by computer.
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
3000 individuals
Sample size: planned number of observations
3000 individuals
Sample size (or number of clusters) by treatment arms
1500 treatment group: information treatment
1500 control group: no information treatment

2250 respondents receive the main outcome question (see pdf)
750 respondents do not receive the main outcome question, but instead receive a series of posterior beliefs (see pdf)
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
NHH Norwegian School of Economics Institutional Review Board (NHH IRB)
IRB Approval Date
2019-02-05
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