Experimental Evidence That Changing Beliefs About Mask Efficacy and Social Norms Increase Mask Wearing for COVID-19 Risk Reduction: Results From the United States and Italy

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ISPS ID: 
D177
Suggested citation: 

Bokemper et al., (2022). Replication materials for “Experimental Evidence That Changing Beliefs About Mask Efficacy and Social Norms Increase Mask Wearing for COVID-19 Risk Reduction: Results From the United States and Italy.” http://hdl.handle.net/10079/33092dd7-01e1-41eb-b80b-f2c460b3f803. ISPS Data Archive.

Author(s): 

Saad Omer, Paolo Pin, Amyn Malik, Elliott Paintsil, Scott Bokemper, Maria Cucciniello, Kathryn Willebrand, Gregory Huber, Tiziano Rotesi, Alessia Melegaro

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

Authors

Data source information: 

isps(at)yale(dot)edu

Field Date: 
2020-10-01 - 2020-11-08
Location: 
Location details: 
United States and Italy
Unit of observation: 
Individual
Sample size: 
5,759 (3,100 USA + 2,659 Italy)
Inclusion/exclusion: 
After providing informed written consent, respondents read an unrelated vignette to assess their attention. Those who did not answer a comprehension question correctly could not proceed with the study and exited the sample.
Randomization procedure: 
At the subject level, we randomized respondents at equal rates to a Placebo Control, where they read a message unrelated to the topic of the experiment, a Masks Protect You treatment that explains how masks stop some percentage of SARS-CoV-2 virus particles in the air from being inhaled by healthy people, and a Masks Protect Others treatment that explains how masks stop some percentage of SARS-CoV-2 virus particles from being expelled into the air by sick people.
Treatment: 
Our core randomized treatments allow us to test whether beliefs about mask efficacy and the mask wearing behavior of others as described in a vignette affect one’s own mask wearing and one’s willingness to encourage mask wearing by others.
Treatment administration: 
Web delivered
Outcome measures: 
beliefs about masks protecting you,beliefs about masks protecting others,behavioral intentions,third party judgment
Archive date: 
2022
Terms of use: 

ISPS Data Archive: Terms of Use.

Discipline: 
Area of study: 
Data file number Description File formatsort ascending Size File url
D177F07 Metadata (DDI 3.2) .xml 2313856 Download file
D177F06 Curator README .txt 1776 Download file
D177F05 Survey instrument .pdf 374003 Download file
D177F01 Data: US Public Replication .dta 12985157 Download file
D177F02 Data: ITA Public Replication .dta 11655410 Download file
D177F03 Program: Conduct US Analysis Final Public Replication .do 19820 Download file
D177F04 Program: Conduct ITA Analysis Final Public Replication .do 19730 Download file