Race, Frames, and Public Opinion After Mass Shootings

Last registered on January 10, 2022

Pre-Trial

Trial Information

General Information

Title
Race, Frames, and Public Opinion After Mass Shootings
RCT ID
AEARCTR-0008769
Initial registration date
January 07, 2022

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
January 10, 2022, 9:37 PM EST

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

Locations

Region

Primary Investigator

Affiliation
University of California, San Diego

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2022-01-10
End date
2022-01-14
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Using a survey experiment with a 2x2 factorial design that randomizes mass shooting victims' race and ethnicity and frames (gun policy-focused frames versus perpetrator-focused frames) in a vignette, this survey experiment seeks to understand the relationship between mass shooting victims' race and ethnicity, news media frames, and public opinion on gun policy.

This study aims to understand whether victims’ race and ethnicity shape the public's preferences over how the government responds to mass shootings by investigating whether victims’ race and ethnicity shape public opinion on gun policy and gun policy saliency. Furthermore, we aim to shine a light on the potential causal mechanisms shaping racialized public responses to catastrophic events by investigating whether members of the public, particularly white respondents, are differently threatened by catastrophic events depending on victims’ race and ethnicity or whether members of the public, particularly white respondents, view the root causes of catastrophic events differently depending on victims’ race and ethnicity. Finally, this study aims to further our understanding of potential causal mechanisms by investigating whether media frames moderate the role that victims’ race and ethnicity play in shaping public opinion after mass shootings. This research helps us understand potential causes of biases in American political representation and the finding may help improve the equitable representation of all Americans.
External Link(s)

Registration Citation

Citation
Markarian, George. 2022. "Race, Frames, and Public Opinion After Mass Shootings." AEA RCT Registry. January 10. https://doi.org/10.1257/rct.8769-1.0
Experimental Details

Interventions

Intervention(s)
Qualtrics will randomly assign respondents to read one of four vignettes that represent a short news article discussing a mass shooting. The survey experiment uses a two-by-two factorial design, and the vignettes are presented in the pre-analysis plan. One dimension of treatment randomly assigns respondents to read about a mass shooting with white victims versus Black and Latino victims. Another dimension of the treatment randomly assigns respondents to read a vignette focusing on the weapon the perpetrator used and how he acquired it versus focusing on the perpetrator's potential hate-based motivation for the shooting.
Intervention Start Date
2022-01-10
Intervention End Date
2022-01-14

Primary Outcomes

Primary Outcomes (end points)
gun policy preferences; gun policy saliency; perceived sense of threat from gun violence; blame attribution for mass shootings/gun violence
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Qualtrics will randomly assign respondents to read one of four vignettes that represent a short news article discussing a mass shooting. The survey experiment uses a two-by-two factorial design, and the vignettes are presented in the pre-analysis plan. One dimension of treatment randomly assigns respondents to read about a mass shooting with white victims versus Black and Latino victims. Another dimension of the treatment randomly assigns respondents to read a vignette focusing on the weapon the perpetrator used and how he acquired it versus focusing on the perpetrator's potential hate-based motivation for the shooting.
Experimental Design Details
Randomization Method
Qualtrics software randomization flow.
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
2000 respondents
Sample size: planned number of observations
2000 respondents
Sample size (or number of clusters) by treatment arms
~500 with white victims - gun policy treatment
~500 with white victims - perpetrator motivation treatment
~500 with Black and Latino victims - gun policy treatment
~500 with Black and Latino victims - perpetrator motivation treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Univeristy of California, San Diego
IRB Approval Date
2021-12-13
IRB Approval Number
#801907
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