No Conditional Cooperation? Trials in a large online Fundraising Campaign

Last registered on November 13, 2018

Pre-Trial

Trial Information

General Information

Title
No Conditional Cooperation? Trials in a large online Fundraising Campaign
RCT ID
AEARCTR-0003543
Initial registration date
November 08, 2018

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
November 13, 2018, 1:06 AM EST

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

Locations

Region

Primary Investigator

Affiliation

Other Primary Investigator(s)

PI Affiliation

Additional Trial Information

Status
In development
Start date
2018-11-09
End date
2020-03-31
Secondary IDs
Abstract
This experimental study tests the role of conditional cooperation for user's donations to a large online platform. Specifically, we vary the text used in solicitation banners in two randomized A/B tests. The treatment varies the communicated number of other users who donated in the past. In a second test we attempt to shed light on the persistence of conditional cooperation when relating the number of donations to the number of users of the online platform.
External Link(s)

Registration Citation

Citation
Linek, Maximilian and Christian Traxler. 2018. "No Conditional Cooperation? Trials in a large online Fundraising Campaign." AEA RCT Registry. November 13. https://doi.org/10.1257/rct.3543
Former Citation
Linek, Maximilian and Christian Traxler. 2018. "No Conditional Cooperation? Trials in a large online Fundraising Campaign." AEA RCT Registry. November 13. https://www.socialscienceregistry.org/trials/3543/history/37102
Experimental Details

Interventions

Intervention(s)
This experimental study tests the role of conditional cooperation for user's donations to a large online platform.
Intervention Start Date
2018-11-09
Intervention End Date
2018-11-11

Primary Outcomes

Primary Outcomes (end points)
(1) number of donations, (2) number of donation page views (clicks on the solicitation link)
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
(3) the number of x-clicks
Secondary Outcomes (explanation)
the number a user closes the donation solicitation in her browser

Experimental Design

Experimental Design
Two A/B tests will be conducted, both of which will vary the text content of the solicitation to donate. First, we vary the communicated number of other users who donated in the past. Second, we attempt to shed light on the persistence of conditional cooperation when relating the number of donations to the number of users of the online platform.
Experimental Design Details
Randomization Method
Randomization done by cooperation partner
Randomization Unit
Browser sessions of users of the online platform
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
no cluster
Sample size: planned number of observations
1,200,000 browser sessions
Sample size (or number of clusters) by treatment arms
assignment to either treatment or control group is conducted randomly with equal probability (50%)
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

Post-Trial

Post Trial Information

Study Withdrawal

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

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