Carrot and Stick

Last registered on September 17, 2024
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Pre-Trial

Trial Information

General Information

Title
Carrot and Stick
RCT ID
AEARCTR-0014336
Initial registration date
September 11, 2024

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
September 17, 2024, 11:50 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

Name
William Munereto
Affiliation
RMIT University
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Other Primary Investigator(s)

PI Name
Peyman Khezr
PI Affiliation
RMIT University
Contact Investigator
PI Name
Jo Peryman
PI Affiliation
RMIT University
Contact Investigator

Additional Trial Information

Status
On going
Start date
2024-09-09
End date
2024-12-31
Keywords
Behavior, Welfare
Additional Keywords
Reward, Punishment, Public Goods Games
JEL code(s)
H3
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This trial, which is called "Carrot and a Stick", evaluating ways of using punishment and rewards to encourage pro-social behavior. You have been invited because we would like to see how individuals react to different combinations of reward and punishment and show which works best for encouraging people to contribute to a public good.
External Link(s)

Registration Citation

Citation
Khezr, Peyman, William Munereto and Jo Peryman. 2024. "Carrot and Stick." AEA RCT Registry. September 17. https://doi.org/10.1257/rct.14336-1.0
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention was three central authorities with a limit they had for incentives, which was split differently between reward and punishment in different central authorities. One was reward only, punishment only and one had an equal mix of both.
Intervention Start Date
2024-10-07
Intervention End Date
2024-10-14

Primary Outcomes

Primary Outcomes (end points)
The outcome variable is the amount of people who contribute and the total amount earned at the end of the game.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Four treatments, one a control which is a common public goods game and three are central authority treatments. One central authority uses only reward, one only punishment and the last an even combination of both.

The participants did one treatment each, it was a betwen group design. The participants do a quiz to test their comprehension as well as a survey to reveal their demographic info and their risk attitude.
Experimental Design Details
Not available
Randomization Method
Randomised using random draw of a number.
Randomization Unit
One level of randomisation.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
No clusters
Sample size: planned number of observations
128-160
Sample size (or number of clusters) by treatment arms
32-40
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
College Human Ethics Advisory Network at RMIT
IRB Approval Date
2024-08-14
IRB Approval Number
27438
Analysis Plan