Citizen Valuation of Police Services

Last registered on August 22, 2022
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Pre-Trial

Trial Information

General Information

Title
Citizen Valuation of Police Services
RCT ID
AEARCTR-0009597
Initial registration date
June 20, 2022

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
June 26, 2022, 5:21 AM EDT

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

Last updated
August 22, 2022, 4:47 PM EDT

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

Locations

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Primary Investigator

Name
Taeho Kim
Affiliation
University of Chicago
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Other Primary Investigator(s)

PI Name
Justin Holz
PI Affiliation
PI Name
Andrew Jordan
PI Affiliation
Washington University in St Louis
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Additional Trial Information

Status
In development
Start date
2022-08-20
End date
2024-06-24
Keywords
Crime, Violence, & Conflict
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This experiment aims to measure the willingness to pay for several local amenities. We will also investigate how information about body cameras affects these results.
External Link(s)

Registration Citation

Citation
Holz, Justin, Andrew Jordan and Taeho Kim. 2022. "Citizen Valuation of Police Services." AEA RCT Registry. August 22. https://doi.org/10.1257/rct.9597-1.1
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
See PAP
Intervention Start Date
2022-08-20
Intervention End Date
2022-10-20

Primary Outcomes

Primary Outcomes (end points)
Outcomes of interest are willingness to pay for reductions in use of force and crime. We are also interested in whether information provision regarding body cameras affect these willingness to pay measures.
Primary Outcomes (explanation)
Willingness to pay for reductions in use of force and crime will be calculated by comparing the effect of these factors on home selections to the effect of price. The willingness to pay for a reduction of e.g. one use of force per 10,000 people is the difference in rent required to make respondents indifferent between a home with some baseline use of force and a home with one fewer uses of force.

Secondary Outcomes

Secondary Outcomes (end points)
We are interested in how the willingness to pay measures depend on various crime conditions (high and low crime) and demographic characteristics (e.g., minority status, education levels, and income levels)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See PAP
Experimental Design Details
Not available
Randomization Method
Randomization of the neighborhood features to vary and treatment into information provision will be done through Qualtrics' random number generator.
Randomization Unit
Randomization unit for neighborhood features are at the individual-by-choice level. Information provision will be given to half of study participants.
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
We will recruit 1000 individuals.
Sample size: planned number of observations
We will recruit 1000 individuals. Each participant will be asked to complete 11 rounds of choices (this excludes 3 rounds that will be used for data checks), which gives us 11,000 observations.
Sample size (or number of clusters) by treatment arms
Half of 1000 individuals will be treated into information provision regarding body cameras.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
University of Chicago
IRB Approval Date
2022-03-04
IRB Approval Number
IRB22-0112
Analysis Plan