x

We are happy to announce that all trial registrations will now be issued DOIs (digital object identifiers). For more information, see here.
Consumers’ Willingness to Pay for a Climate Surcharge in Restaurants to Support a Carbon Emission Reduction Program
Last registered on November 05, 2019

Pre-Trial

Trial Information
General Information
Title
Consumers’ Willingness to Pay for a Climate Surcharge in Restaurants to Support a Carbon Emission Reduction Program
RCT ID
AEARCTR-0004983
Initial registration date
November 04, 2019
Last updated
November 05, 2019 9:38 AM EST
Location(s)
Region
Primary Investigator
Affiliation
California State University Long Beach
Other Primary Investigator(s)
PI Affiliation
University of Arkansas
PI Affiliation
University of Arkansas
Additional Trial Information
Status
Completed
Start date
2019-09-11
End date
2019-09-13
Secondary IDs
Abstract
Given the challenges of implementing a nationwide carbon tax policy or a cap-and-trade program in the United States, individuals, business entities, and non-profit organizations have explored other possibilities to lower their carbon emissions. For example, a new program called Restore California offers restaurants the opportunities to opt-in and add an optional percentage charge to every customer bill. The money gathered through the program will then go to farmers who practice sustainable farming that removes carbon from the atmosphere. The goal of this study is to assess the public’s willingness to pay to fund such programs to reduce food and agriculture carbon emissions. In particular, we explore how much people’s willingness to pay is to reduce carbon emission, measured as an optional surcharge of their restaurant check.
External Link(s)
Registration Citation
Citation
Long, Dede, Rodolfo Nayga and Grant West. 2019. "Consumers’ Willingness to Pay for a Climate Surcharge in Restaurants to Support a Carbon Emission Reduction Program." AEA RCT Registry. November 05. https://doi.org/10.1257/rct.4983-1.0.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2019-09-11
Intervention End Date
2019-09-12
Primary Outcomes
Primary Outcomes (end points)
Participants' willingness to pay for an optional restaurant surcharge.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Participants will be asked if they are willing to pay for a certain amount of optional restaurant surcharge to support carbon emission reduction (yes or no). If their answer is yes, they will be asked if they are willing to pay for a surcharge that is 1% higher. If their answer is no to the first question, they will be asked if they are willing to pay for a surcharge that is 1% lower.
Experimental Design Details
Randomization Method
Participants are randomly selected in the U.S. with characteristics representative of the general adult U.S. population. Participants are randomly assigned to four treatment groups: 1. participants are asked if they are willing to ADD an optional amount of surcharge to their restaurant bill and are required to read a paragraph describing the impact of climate change. 2. participants are asked if they are willing to ADD an optional amount of surcharge and are NOT provided with climate change information. 3. participants are asked if they are willing to REMOVE an optional amount of surcharge and provided with climate change information. 4. participants are asked if they are willing to REMOVE an optional amount of surcharge and NOT provided with climate change information
Randomization Unit
Individuals
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
NA
Sample size: planned number of observations
1000 individuals
Sample size (or number of clusters) by treatment arms
250 individuals per treatment. A total of 4 treatments.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
We have conducted a power analysis and determined that approximately 200 responses per treatment are needed to achieve 80% power. Our sample size offers us about 95% power.
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
University of Arkansas
IRB Approval Date
2019-09-09
IRB Approval Number
1906201426
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
September 12, 2019, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
September 13, 2019, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
1171 individuals
Final Sample Size (or Number of Clusters) by Treatment Arms
1171 individuals, 4 treatment, 280 individuals per treatment
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers