Effectiveness of Informational Pamphlets

Last registered on December 21, 2021

Pre-Trial

Trial Information

General Information

Title
Effectiveness of Informational Pamphlets
RCT ID
AEARCTR-0003871
Initial registration date
February 09, 2019

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 10, 2019, 7:51 PM EST

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

Last updated
December 21, 2021, 9:50 PM EST

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

Locations

Region

Primary Investigator

Affiliation
Claremont Graduate University

Other Primary Investigator(s)

PI Affiliation
Occidental College
PI Affiliation
Claremont Graduate University
PI Affiliation
UCLA

Additional Trial Information

Status
In development
Start date
2019-02-11
End date
2021-12-31
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Please see attachment.
External Link(s)

Registration Citation

Citation
Haile, Menbere et al. 2021. "Effectiveness of Informational Pamphlets." AEA RCT Registry. December 21. https://doi.org/10.1257/rct.3871-2.1
Former Citation
Haile, Menbere et al. 2021. "Effectiveness of Informational Pamphlets." AEA RCT Registry. December 21. https://www.socialscienceregistry.org/trials/3871/history/107198
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2019-02-11
Intervention End Date
2020-05-31

Primary Outcomes

Primary Outcomes (end points)
Main Outcome: Purchase was meat or not
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Survey Outcomes:
1. Diet changed
2. Reason for diet change
3. Remembered leaflet
4. Read the leaflet
5. Flyer affected you?
6. Importance of animal, personal choice, accessibility of replacements, willing to make changes
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Study design - the project uses a randomized controlled trial. Participants will be divided in to treatment and control groups. Each group will get a flier pertaining to animal welfare.
Treatment group flier – compassionate choices - about mistreatment of farm animals and vegetarian/vegan diet.
Control group flier – the cruelty behind the cuteness - about puppy mills and pet adoption.
Experimental Design Details
Randomization Method
Randomization is done using the last digit of the student's ID numbers.
Even last digit - treatment group flier
Odd last digit - control group flier
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1000 participants
Sample size: planned number of observations
1000 participants
Sample size (or number of clusters) by treatment arms
500 students treatment 500 control
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Occidental college HSRRC
IRB Approval Date
2019-01-17
IRB Approval Number
Jali-F18126
Analysis Plan

Analysis Plan Documents

pre-analysis+plan.docx

MD5: 929b80e67cf98e5b33a4535634cd1aef

SHA1: 8c40982e4ab7f68bd9b6a554471b9443636ee836

Uploaded At: February 09, 2019

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