Commitment Devices and Student Self-Control

Last registered on April 08, 2015
View Trial History

Pre-Trial

Trial Information

General Information

Title
Commitment Devices and Student Self-Control
RCT ID
AEARCTR-0000687
Initial registration date
April 08, 2015

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
April 08, 2015, 1:35 PM EDT

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

Locations

Country
United States of America
Region

Primary Investigator

Name
Todd Rogers
Affiliation
Harvard Kennedy School
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Angela Duckworth
PI Affiliation
Penn

Additional Trial Information

Status
On going
Start date
2014-11-04
End date
2015-04-10
Keywords
Education
Additional Keywords
JEL code(s)
Secondary IDs
Abstract
We examine three core questions: what influences takeup of commitment devices among middle school students, can the provision of commitment devices improve middle school student behavior, what students benefit most from the takeup of commitment devices.
External Link(s)

Registration Citation

Citation
Duckworth, Angela and Todd Rogers. 2015. "Commitment Devices and Student Self-Control." AEA RCT Registry. April 08. https://doi.org/10.1257/rct.687-1.0
Former Citation
Duckworth, Angela and Todd Rogers. 2015. "Commitment Devices and Student Self-Control." AEA RCT Registry. April 08. https://www.socialscienceregistry.org/trials/687/history/4020
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Students are randomly assigned to one of three conditions: opt-in to enroll in a commitment device, opt-out to enroll in a commitment device, and control. The commitment device pertains to behavior assessments delivered weekly.
Intervention Start Date
2014-11-04
Intervention End Date
2015-04-09

Primary Outcomes

Primary Outcomes (end points)
Scores on weekly behavior assessments
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Three conditions, as described above.
Experimental Design Details
Randomization Method
Computer
Randomization Unit
Student-level
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
5 schools, but individual-level randomization
Sample size: planned number of observations
~1,300
Sample size (or number of clusters) by treatment arms
~430 per condition
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Harvard IRB
IRB Approval Date
2013-11-04
IRB Approval Number
13-2091
Analysis Plan

Analysis Plan Documents

Commitment devices and self-control in MS students.preanalysis plan

MD5: af5cc794c5458d2765b288dbd5af3a69

SHA1: 551502ce4c9a9a187e19926447d2de27392fb41b

Uploaded At: April 08, 2015

Post-Trial

Post Trial Information

Study Withdrawal

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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