Street Violence and Media Empowerment: Evidence from Guatemala
Last registered on June 10, 2019

Pre-Trial

Trial Information
General Information
Title
Street Violence and Media Empowerment: Evidence from Guatemala
RCT ID
AEARCTR-0004298
Initial registration date
June 10, 2019
Last updated
June 10, 2019 10:38 PM EDT
Location(s)

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Primary Investigator
Affiliation
University of Navarra
Other Primary Investigator(s)
PI Affiliation
Navarra Center for International Development, University of Navarra
Additional Trial Information
Status
In development
Start date
2019-10-01
End date
2022-12-31
Secondary IDs
Abstract
Homicide is rampant in Latin America and the Caribbean. This project has a two-fold objective. First, it will provide evidence on the impact of an effort to protect at-risk youth in Guatemala through empowerment. This is implemented through a randomized individual-level intervention on the role of self-expression in shaping behavior among the youth living in areas festered with violence and lack of access to opportunities. For this purpose, the participation in a mass-media campaign will serve as main source of variation. Second, it aims to understand the role of media in the fight against gangs, by varying throughout the country the exposure to the mass-media among youth. To capture this, this project will exploit semi-random variation in the reception of radio and tv signals through topography, and random variation through social media.
External Link(s)
Registration Citation
Citation
Armand, Alex and Ivan Kim Taveras. 2019. "Street Violence and Media Empowerment: Evidence from Guatemala." AEA RCT Registry. June 10. https://www.socialscienceregistry.org/trials/4298/history/47917
Sponsors & Partners

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Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2020-04-01
Intervention End Date
2021-04-01
Primary Outcomes
Primary Outcomes (end points)
Violent behavior, sense of belonging, aspirations, homicide rates
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
The evaluation design of the first component is a standard individual-level randomized controlled trial.
Experimental Design Details
Not available
Randomization Method
Stata code
Randomization Unit
Individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
N/A
Sample size: planned number of observations
1200 at-risk youths between 16 and 21 year
Sample size (or number of clusters) by treatment arms
400 individuals per treatment arm
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
This study proposes to have 1200 at-risk youth between the ages of 16 and 21 to be randomly allocated into one of three groups (T0, T1, T2). With 80 percent of statistical power and an alpha of 0.05, we could capture a minimum detectable effect of 0.2 of a standard deviation (as standard in randomized experiments) with 394 individuals per group. We therefore decide to have 400 individuals in each comparison group, which provides a power of 81 percent (alpha = 0.05). With cross-randomization, statistical testing could extend to 5 groups (T0, T1, T2 and cross-randomization within T1 and T2). This is in addition to test cross-randomized groups, for which previous calculations also apply. In this case, we would have 240 individuals in each comparison group. With 80 percent of statistical power and an alpha of 0.05, this allows capturing a minimum detectable effect of 0.26 of a standard deviation.
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number