Emotions and Policy

Last registered on June 09, 2025

Pre-Trial

Trial Information

General Information

Title
Emotions and Policy
RCT ID
AEARCTR-0015432
Initial registration date
February 23, 2025

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 25, 2025, 10:39 AM EST

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

Last updated
June 09, 2025, 11:16 AM EDT

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

Locations

Region

Primary Investigator

Affiliation
UC Berkeley

Other Primary Investigator(s)

PI Affiliation
Harvard University
PI Affiliation
HEC
PI Affiliation
University Paris 1 Panthéon-Sorbonne

Additional Trial Information

Status
Completed
Start date
2024-11-01
End date
2024-11-05
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Individual positive or negative emotional states seem to play a critical role in the support or opposition to policies. In this project, we aim to unpack this relationship. We design and implement an experimental survey to understand the impact of positive and negative emotions on people's attitudes towards policy in the United States. We further disentangle the specific roles of distinct negative emotions, notably fear and anger, examining their differential impacts in the context of climate change. Additionally, we investigate whether these emotions have real-world implications by testing whether the emotional tone of a message affects people's willingness to amplify it via retweeting.
External Link(s)

Registration Citation

Citation
Algan, Yann et al. 2025. "Emotions and Policy." AEA RCT Registry. June 09. https://doi.org/10.1257/rct.15432-3.1
Experimental Details

Interventions

Intervention(s)
We conduct three experimental surveys.

In Survey A, respondents are randomly assigned to one of two main treatment groups or a control group, designed to assess the impact of emotions on policy attitudes:

Positive emotion treatment branch: Respondents watch two one-minute relaxation videos (before the trade and wealth \& taxation blocks) designed to induce calm, and the open-ended policy questions in each policy block are framed in a positive way, prompting optimism. The first video features serene landscapes—green fields, a lake, an eagle in flight, a cyclist by the water, lavender fields, and snow-capped mountains—accompanied by peaceful music. The second video showcases tranquil mountain scenery, a blue sky, a flowing river, and a lush green forest from above, also with peaceful music.

Negative emotion treatment branch: Respondents watch two one-minute anger-inducing videos (before the trade and wealth \& taxation blocks) designed to evoke anger, and the open-ended policy questions in each policy block are framed negatively, further prompting anger. The first video is a one-minute video highlighting government corruption and corporate greed as causes of worsening disasters. It focuses on a wildfire ignited by PG\&E’s failure to replace aging electrical line hooks, which resulted in 84 corporate homicide charges, showing the victims and the destruction caused. The second video is a one-minute video highlighting government favoritism toward corporations and the lack of real accountability. It details how PG&E, despite making \$17 billion annually, faced only a \$3.5 million fine—the maximum penalty under California law—for the wildfire caused by its negligence. The video also exposes how the California Public Utility Commission refused to assist in prosecuting PG\&E, withholding evidence that could have strengthened the case against the company.

Control branch: The open-ended policy questions at the beginning of each policy block are framed in a neutral way.

To be able to disentangle the effect of the video from the effect of the framed question, we also added two secondary treatment groups:

Effect of the framed question only: The open-ended policy questions at the beginning of each policy block are framed in a negative way, prompting anger.

Effect of the video only: Respondents watch the same two relaxation videos and the open-ended policy questions are framed neutrally.

In Survey B, respondents are randomly assigned to one of three main treatment groups or a control group, designed to dig further the impact of negative emotions distinguishing fear from anger.

Anger treatment branch: Respondents watch the same two one-minute anger-inducing videos as in Survey A.

Fear treatment branch: Respondents watch two one-minute fear-inducing.

Positive emotion treatment branch: Respondents watch the same two one-minute relaxation videos as in Survey A but are not asked the positively framed open-ended question.

In Survey C, respondents are randomly shown a Tweet with an emotional tone (anger, fear or positive) on a specific policy topic and are asked whether they'd like to retweet it.


Intervention (Hidden)
Intervention Start Date
2024-11-01
Intervention End Date
2024-11-05

Primary Outcomes

Primary Outcomes (end points)
The key outcome variables of these experiments are policy views on five topics: trade, immigration, taxes and redistribution, democracy/governance, society issues, climate change and whether people are willing to retweet a message.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
We are also interested in the heterogeneity of treatment effects by political affiliation and hence ask respondents about their vote during the 2024 presidential elections. Moreover, we will investigate whether background characteristics of respondents play a role. We will thus look at outcomes by income, age, gender, and education levels.
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We randomize respondents into one of the treatment groups or control group. We then compare the policy views or retweeting behavior of the respondents of the treatment groups to the policy views of the respondents of the control group.
Experimental Design Details
Randomization Method
The randomization is done by the survey software (Qualtrics).
Randomization Unit
The unit of randomization is the individual respondent.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
The planned number of clusters is around 4,000 individuals.
Sample size: planned number of observations
Approximately 4,000 individuals in each survey.
Sample size (or number of clusters) by treatment arms
Survey A: The sample is divided into 5 arms: 820 respondents receive the main negative treatment (video + negatively framed question), 720 respondents receive the main positive treatment (video + negatively framed question), 820 respondents constitue the control group, 820 respondents receive the secondary treatment (negative question only) and 820 respondents receive the other secondary treatment (video relax + neutrally framed question).

Survey B: The sample is divided into 4 arms: 1, 000 respondents receive the anger treatment, 1, 000 respondents receive the fear treatment, 1, 000 respondents receive the positive treatment, 1, 000 respondents are assigned to the control group.

Survey C: The sample is divided into 8 arms: 500 respondents see the anger pro-policy Tweet, 500 respondents see the fear pro-policy Tweet, 500 respondents see the positive emotion pro-policy Tweet, 500 respondents see the neutral pro-policy Tweet, 500 respondents see the anger anti-policy Tweet, 500 respondents see the fear anti-policy Tweet, 500 respondents see the positive emotion anti-policy Tweet, 500 respondents see the neutral anti-policy Tweet.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
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