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Charitable donations to forest conservation: Evidence from field experiments
Last registered on October 27, 2020

Pre-Trial

Trial Information
General Information
Title
Charitable donations to forest conservation: Evidence from field experiments
RCT ID
AEARCTR-0006152
Initial registration date
July 19, 2020
Last updated
October 27, 2020 6:39 AM EDT
Location(s)

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Primary Investigator
Affiliation
National Institute for Environmental Studies
Other Primary Investigator(s)
Additional Trial Information
Status
In development
Start date
2020-07-20
End date
2020-12-31
Secondary IDs
Abstract
Donations are an important way to address funding shortfalls in conservation. However, few behavioural studies have tested the impact of ‘messaging’ on conservation donations. We will conduct two types of randomized field experiments to examine the effects of information provision on donation behaviour for forest conservation. Specifically, we measure the impacts of two types of information. The first relates to funding by informing potential donors about the percentage and total amount of current donations compared to the targeted amount. The second concerns the conservation importance of the targeted forest and provides information about the high number of threatened species that live there. We will test whether those messages enhance the donation behaviour among Japanese citizens using traditional mailshot (first experiment) and advertisements on Facebook (second experiment).
External Link(s)
Registration Citation
Citation
Kubo, Takahiro. 2020. "Charitable donations to forest conservation: Evidence from field experiments." AEA RCT Registry. October 27. https://doi.org/10.1257/rct.6152-1.1.
Sponsors & Partners

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Experimental Details
Interventions
Intervention(s)
We will conduct randomized information manipulations using solicitation mails (letters) and Facebook ads. Subjects will be randomly assigned to three groups.
Intervention Start Date
2020-07-20
Intervention End Date
2020-12-31
Primary Outcomes
Primary Outcomes (end points)
At the subject-level:
- Whether or not a subject donates to charity
- How much a subject donates to charity

At the daily level:
- Number of people who see the Facebook ads (i.e., Reach and/or Impression)
- Number of people who click on the Facebook ads (i.e., Link clicks)
- Number of contributions to over entire time period
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We will conduct randomized information manipulations using solicitation mails (letters) and Facebook ads. Subjects will be randomly assigned to three groups.
Experimental Design Details
Not available
Randomization Method
Randomization has been done in office by a computer.
Randomization Unit
In the experiment using mailed letters , we will implement a stratified randomization by considering the member type (individual or corporate). In the Facebook experiment, we will apply individual-unit randomization (i.e., between-subjects design).
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
797 members (individual and corporate NGO members), and 3000 Facebook users (individuals)
Sample size: planned number of observations
797 members (individual and corporate NGO members), and 3000 Facebook users
Sample size (or number of clusters) by treatment arms
Control: 266 members + 1000 Facebook users,
Seed-money treatment: 266 members + 1000 Facebook users,
Ecological treatment: 265 members + 1000 Facebook users
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
The Ethics Committee of the School of Anthropology and Conservation of the University of Kent, UK
IRB Approval Date
2020-06-12
IRB Approval Number
011-ST-20
Analysis Plan

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