Institution for Social and Policy Studies

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Editorial Bias in Crowd Sourced Political Information

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Joshua L. Kalla and Peter A. Aronow

Research design: 
Data type: 
Data source(s): 

Authors; Wikipedia

Data source information: 

Authors; Wikipedia

Suggested citation: “Kalla & Aronow (2015) Replication materials for ‘Editorial Bias in Crowd Sourced Political Information,’ ISPS Data Archive.”

Field date: 
January 1, 2015
Unit of observation: 
Wikepedia page of US senators
Sample size: 
All current and recently deceased/retired US Senators.
Randomization procedure: 
Units are randomly assigned, with equal probability, to receive a positive or negative fact on their Wikipedia page. In some studies, units were also random;y assigned, with equal probability, to have the fact cited or not.
The addition of either a true positive or true negative fact to the Wikipedia page of US Senators.
Treatment administration: 
Outcome measures: 
Length of time fact lasted on Wikipedia page
Archive date: 
Archive contributor: 
Limor Peer
Owner contact: 


Terms of use: 

Academic, non-commercial; see ISPS Terms of Use

Data file numbersort descending Description File format Size File url
D132F01 Dataset - Main Stata (13.0) .dta 169984 Download file
D132F02 Dataset - Main .csv 92160 Download file
D132F03 Dataset - Mturk .csv 2264924 Download file
D132F04 Program file - Main Stata (13.0) .do 10240 Download file
D132F05 Program file - Mturk Stata (13.0) .do 10240 Download file
D132F06 Program file - labels Stata (13.0) .do 2048 Download file
D132F07 Program file - plots R 6144 Download file
D132F08 Codebook XML - Main XML 37888 Download file
D132F09 Codebook XML - Mturk XML 30720 Download file
D132F10 Codebook - Main Adobe Acrobat (10.0.3) .pdf 48128 Download file
D132F11 Codebook - Main .txt 2048 Download file
D132F12 Supplementary Materials .csv 93184 Download file
D132F13 Metadata record Adobe Acrobat (10.0.3) .pdf 113664 Download file