Meaty arguments: Field experimental evidence on the effectiveness of different reasons to reduce meat consumption
Last registered on November 21, 2018

Pre-Trial

Trial Information
General Information
Title
Meaty arguments: Field experimental evidence on the effectiveness of different reasons to reduce meat consumption
RCT ID
AEARCTR-0003590
Initial registration date
November 21, 2018
Last updated
November 21, 2018 12:55 PM EST
Location(s)
Region
Primary Investigator
Affiliation
University of Hamburg
Other Primary Investigator(s)
PI Affiliation
University of Hamburg
Additional Trial Information
Status
In development
Start date
2018-11-25
End date
2018-12-05
Secondary IDs
Abstract
Several lines of reasoning support the notion to reduce the consumption of meat in developed countries. We conduct a field experiment with a representative sample of the German population to test whether exposure to health (private good), animal welfare (public good, inter-species altruism) or climate change (public good, intra-species altruism) based reasons to reduce meat consumption are (more) effective in inducing dietary changes relative to a control group.
Furthermore, the experiment allows to gain further insights on the preferences-intention-behavior gap by observing all three components in a controlled setting.
External Link(s)
Registration Citation
Citation
Perino, Grischa and Claudia Schwirplies. 2018. "Meaty arguments: Field experimental evidence on the effectiveness of different reasons to reduce meat consumption." AEA RCT Registry. November 21. https://www.socialscienceregistry.org/trials/3590/history/37777
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2018-11-29
Intervention End Date
2018-11-30
Primary Outcomes
Primary Outcomes (end points)
Frequency of meat product consumption, intention to change meat consumption
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
The study consists of several parts that each participant will complete in the following sequence:
• Recruitment and selection questionnaire: Provides details on the study, tasks, effort involved and payment offered. Potential participants are also asked to state dietary restrictions / preferences. This is used to focus on a sample that at least occasionally eats meat, fish and related products.
• Food diary part 1: Participants complete a brief survey for each of the main meals of a day for three subsequent days (Sun., Mon., Tue.) and are asked to provide a picture of the meal or a verbal description.
• Intermediate survey/intervention: After completing the previous stage, this survey asks for food shopping habits and other food related topics but most importantly contains the randomized treatments (details provided in 'intervention' section).
• Food diary part 2: Participants complete a brief survey for each of the main meals of a day for three subsequent days (Sun., Mon., Tue.) and are asked to provide a picture of the meal or a verbal description.
• Exit survey: Participants are asked a set of standard socio-economic characteristics and questions related to meat consumption.
Experimental Design Details
Randomization Method
randomization done in office by a computer
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
480 individuals
Sample size: planned number of observations
480 individuals
Sample size (or number of clusters) by treatment arms
120 individuals for each of the four treatments
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Dean’s office, Faculty of Economics and Social Sciences, Universität Hamburg
IRB Approval Date
2018-11-13
IRB Approval Number
N/A
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers