The Small Effects of Political Advertising are Small Regardless of Context, Message, Sender, or Receiver: Evidence From 59 Real-time Randomized Experiments

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ISPS ID: 
D160
Suggested citation: 

Coppock, Alexander, Seth J. Hill, and Lynn Vavreck (2020). Replication Materials for, “The Small Effects of Political Advertising are Small Regardless of Context, Message, Sender, or Receiver: Evidence From 59 Real-time Randomized Experiments.” http://hdl.handle.net/10079/86060f44-fa37-43dd-968f-a7a0e09e2fca. ISPS Data Archive.

Author(s): 

Seth J. Hill, Lynn Vavreck, Alexander Coppock

Research design: 
Data type: 
Survey experimental data
Data source(s): 

Authors

Data source information: 

isps(at)yale(dot)edu

Field Date: 
2016-03 - 2016-11
Location: 
Location details: 
N/A
Unit of observation: 
Individual
Sample size: 
34,000
Inclusion/exclusion: 
Our subjects were recruited by YouGov, which furnished samples of exactly 1000 (or 2000, depending on the week) complete responses. Participants were part of YouGov’s ongoing survey research panel and were invited to this particular survey after agreeing to take surveys for YouGov generally.
Randomization procedure: 
Each week for 29 (not always consecutive) weeks, a representative sample of Americans was divided at random into groups and assigned to watch campaign advertisements or a placebo advertisement before answering a short survey.
Treatment: 
We tested 30 advertisements attacking Republican candidate Donald Trump, 11 attacking Democratic candidate Hillary Clinton, 8 promoting Clinton, and 3 promoting Trump
Treatment administration: 
Web delivered
Outcome measures: 
Candidate favorability,vote intention
Archive date: 
2021
Terms of use: 

ISPS Data Archive: Terms of Use.

Discipline: 
Data file numbersort descending Description File format Size File url
D160F01 Readme file .txt 3325 Download file
D160F02 Data file - ad df .csv 1911 Download file
D160F03 Data file - vote choice cates .csv 117470 Download file
D160F04 Data file - vote choice cates .rds 109690 Download file
D160F05 Data file - vote choice sates .csv 14702 Download file
D160F06 Data file - vote choice sates .rds 14550 Download file
D160F07 Data file - favorability cates .csv 234246 Download file
D160F08 Data file - favorability cates .rds 199241 Download file
D160F09 Data file - favorability sates .csv 29920 Download file
D160F10 Data file - favorability sates .rds 24592 Download file
D160F11 Data file - exps .csv 4157952 Download file
D160F12 Data file - exps .rds 7677293 Download file
D160F13 Data file - exps with incompletes .csv 944907 Download file
D160F14 Data file - exps with incompletes .rds 1418242 Download file
D160F15 Program file - helpers .R 2377 Download file
D160F16 Program file - estimate vote choice cates .R 4299 Download file
D160F17 Program file - estimate vote choice sates .R 2936 Download file
D160F18 Program file - estimate favorability cates .R 5117 Download file
D160F19 Program file - estimate favorability sates .R 3408 Download file
D160F20 Program file - table 1 .R 3275 Download file
D160F21 Program file - figure 1 .R 2543 Download file
D160F22 Program file - figure 2 .R 1844 Download file
D160F23 Program file - in-text numbers .R 1734 Download file
D160F24 Program file - table S1 .R 1150 Download file
D160F25 Program file - table S2 .R 1514 Download file
D160F26 Program file - table S3 .R 1043 Download file
D160F27 Program file - figure S1 .R 3707 Download file
D160F28 Supplementary materials .pdf 267584 Download file
D160F28.1 Supplementary materials-updated .pdf 195254 Download file
D160F29 Metadata (DDI 3.2) .xml 87655 Download file