Using Contact to Improve the Relationship between the Police and the Population

Last registered on April 19, 2021

Pre-Trial

Trial Information

General Information

Title
Using Contact to Improve the Relationship between the Police and the Population
RCT ID
AEARCTR-0007116
Initial registration date
February 03, 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
February 03, 2021, 10:04 AM EST

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

Last updated
April 19, 2021, 1:29 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Region

Primary Investigator

Affiliation
CREST - Ecole polytechnique

Other Primary Investigator(s)

Additional Trial Information

Status
Completed
Start date
2021-03-01
End date
2021-03-26
Secondary IDs
Abstract
I am conducting a lab-in-the-field experiment in which I test for the effect of short face-to-face meetings between policemen and students from a high-school near Paris in which the relationship between the population and the police is tense.
External Link(s)

Registration Citation

Citation
Clochard, Gwen-Jiro. 2021. "Using Contact to Improve the Relationship between the Police and the Population." AEA RCT Registry. April 19. https://doi.org/10.1257/rct.7116
Experimental Details

Interventions

Intervention(s)
I am using the methodology from Aron et al. (1997) aiming at generating closeness between individuals.
Intervention Start Date
2021-03-01
Intervention End Date
2021-03-26

Primary Outcomes

Primary Outcomes (end points)
See pre-analysis plan
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
See pre-analysis plan
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See pre-analysis plan
Experimental Design Details
Randomization Method
By computer
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
250 students - could be expanded to another high school (doubling of sample)
Sample size: planned number of observations
250 students - could be expanded to another high school (doubling of sample)
Sample size (or number of clusters) by treatment arms
50 students meeting policemen, 50 meeting a youth, 50 presented with the photo from policemen, 50 photo from youth, 50 anonymous
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
MDE = 0.48 standard deviation
IRB

Institutional Review Boards (IRBs)

IRB Name
CREST IRB
IRB Approval Date
2021-02-02
IRB Approval Number
2021-01
Analysis Plan

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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