Spillovers & Information Effects on Animal Welfare Voting Decisions

Last registered on June 13, 2025
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Pre-Trial

Trial Information

General Information

Title
Spillovers & Information Effects on Animal Welfare Voting Decisions
RCT ID
AEARCTR-0015808
Initial registration date
June 06, 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
June 13, 2025, 6:40 AM EDT

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

Locations

Country
United States of America
Region

Primary Investigator

Name
Amelia Ahles
Affiliation
Oklahoma State University
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Jayson Lusk
PI Affiliation
Oklahoma State University
Contact Investigator

Additional Trial Information

Status
In development
Start date
2025-07-01
End date
2025-10-01
Keywords
Agriculture, Behavior, Electoral
Additional Keywords
animal welfare legislation, vote-buy gap, spillovers, incentives, voting
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This study investigates current consumer voting propensity for ballot initiatives on animal welfare housing requirements similar to California's Proposition 12 and Massachusetts' Question 3 in 12 hog-producing states.
External Link(s)

Registration Citation

Citation
Ahles, Amelia and Jayson Lusk. 2025. "Spillovers & Information Effects on Animal Welfare Voting Decisions." AEA RCT Registry. June 13. https://doi.org/10.1257/rct.15808-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention (Hidden)
Intervention Start Date
2025-07-01
Intervention End Date
2025-10-01

Primary Outcomes

Primary Outcomes (end points)
Voting Choice, Liklihood of Proposal Passing, Pork Premiums/WTP for Pork Varieties, Vote Switching
Primary Outcomes (explanation)
Pork Premiums/WTP for Pork Varieties will be constructed via MPLs, Vote Switching will be constructed based on if the participants change their votes from vote 1 to vote 2. Likelihood of Proposal Passing is the count of binary "yes" votes cast.

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
TBD.
Experimental Design Details
Randomization Method
computer code (qualtrics) randomize participants into treatments (hypothetical or incentivized) at beginning of study. Additional randomization will occur at information stage -- computer programming will randomize participants into information source treatments (endogenous or exogenous) with 1/2 of participants being randomly assigned to view the information content they selected as their preferred and 1/2 of participants will view informaiton opposite of their selected preference.
Randomization Unit
Individual Randomization
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
12 states
Sample size: planned number of observations
2000
Sample size (or number of clusters) by treatment arms
110 per treatment x 8 treatments x 2 gender = 1760
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Oklahoma State University IRB
IRB Approval Date
2025-05-12
IRB Approval Number
IRB-25-244-OFF
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