Pledges and charitable giving

Last registered on May 14, 2021

Pre-Trial

Trial Information

General Information

Title
Pledges and charitable giving
RCT ID
AEARCTR-0007673
Initial registration date
May 12, 2021

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
May 14, 2021, 9:40 AM EDT

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

Locations

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Primary Investigator

Affiliation
Texas A&M University

Other Primary Investigator(s)

PI Affiliation
Texas A&M University

Additional Trial Information

Status
In development
Start date
2021-05-19
End date
2025-05-19
Secondary IDs
Abstract
The study examines the effects of reminders on following though on a donation pledge and continued donation. We partner with a charity to conduct a field experiment to test the effects of reminders on donation rates and donation amounts in the short and long run.
External Link(s)

Registration Citation

Citation
Castillo, Marco and Ragan Petrie. 2021. "Pledges and charitable giving." AEA RCT Registry. May 14. https://doi.org/10.1257/rct.7673
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
The study examines the effects of reminders to donors on following though on a donation pledge and continued donation.
Intervention Start Date
2021-05-19
Intervention End Date
2022-05-19

Primary Outcomes

Primary Outcomes (end points)
donation rate and amount
Primary Outcomes (explanation)
This data will be provided by our partner

Secondary Outcomes

Secondary Outcomes (end points)
Duration of donation relationship
Secondary Outcomes (explanation)
This data will be provided by our partner

Experimental Design

Experimental Design
Donors will be randomized into a control and treatment group to get a reminder to donate and the donation amount.
Experimental Design Details
Not available
Randomization Method
Randomization done on a computer
Randomization Unit
Randomization done at the level of the individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
800 individuals
Sample size: planned number of observations
800 individuals
Sample size (or number of clusters) by treatment arms
Experiment 1 - 200 control, 200 treatment. Experiment 2 - 200 control, 200 treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
For each experiment, with roughly 400 individuals, we are powered to detect an increase of 13 percentage points in the donation rate, from a baseline of 63%. (alpha of 0.05, power of 0.8).
IRB

Institutional Review Boards (IRBs)

IRB Name
Texas A&M Institutional Review Board
IRB Approval Date
2021-05-12
IRB Approval Number
IRB2021-0545M
Analysis Plan

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