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Commitment Devices and Student Self-Control
Last registered on April 08, 2015

Pre-Trial

Trial Information
General Information
Title
Commitment Devices and Student Self-Control
RCT ID
AEARCTR-0000687
Initial registration date
April 08, 2015
Last updated
April 08, 2015 1:35 PM EDT
Location(s)
Region
Primary Investigator
Affiliation
Harvard Kennedy School
Other Primary Investigator(s)
PI Affiliation
Penn
Additional Trial Information
Status
On going
Start date
2014-11-04
End date
2015-04-10
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, Todd Rogers and Todd Rogers. 2015. "Commitment Devices and Student Self-Control." AEA RCT Registry. April 08. http://www.socialscienceregistry.org/trials/687/history/4020.
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)
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
Intervention
Is the intervention completed?
No
Is 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