We study the effects of broken windows policing on crime using geo-located crime and arrest reports for 80 Colombian cities. Broadly defined, broken windows policing consists of intensifying arrests—sometimes for minor offenses—to deter potential criminals. To estimate causal effects, we...

Test direct, spillover and aggregate effects of hot spots policing on crime in a high crime environment. Methods: We identified 967 hot spot street segments and randomly assigned 384 to a six-months increase in police patrols. To account for the complications resulting from a large experimental...

We study the effects of broken windows policing on crime using geo-located crime and arrest reports for 80 Colombian cities. Broadly defined, broken windows policing consists of intensifying arrests - sometimes for minor offenses - to deter potential criminals. To estimate causal effects, we...

The main purpose of this paper is to summarize the information currently available on cocaine production and trafficking. The paper starts by describing the available data on cocaine production and trade, the collection methodologies (if available) used by different sources, the main biases in...

This paper studies the effects of enforcement on illegal behavior in the context of a large aerial spraying program designed to curb coca cultivation in Colombia. In 2006, the Colombian government pledged not to spray a 10 km band around the frontier with Ecuador due to diplomatic frictions...

Spanish Abstract: En este artículo estimo el efecto causal de las condiciones de reclusión sobre la reincidencia explotando la entrada en operación de nuevos centros de reclusión en Colombia. Entre marzo de 2010 y enero de 2013 entraron en funcionamiento diez nuevos centros de reclusión...

Spanish Abstract: Colombia concentra grandes esfuerzos fiscales a la persecución del delito de porte, fabricación y tráfico de estupefacientes. Estos costos no son siempre visibles, en tanto corresponden al costo de oportunidad de una gran cantidad de funcionarios que intervienen en el ciclo...

In 2016 the city of Bogotá doubled police patrols and intensified city services on high-crime streets. They did so based on a policy and criminological consensus that such place-based programs not only decrease crime, but also have positive spillovers to nearby streets. To test this, we worked...

Cities target police patrols and public services to control crime. What are the direct and spillover effects of such targeted state services? In 2016 the city of Bogotá, Colombia, experimented on an unprecedented scale. They randomly assigned 1,919 streets to either 8 months of doubled police...

We study persistence in criminal capital by looking at the effects of inmates’ releases on crime around prisons in Colombia. Leveraging detailed geographic and temporal information on the universe of releases from all prisons and crime reports, we find that property crimes are 16% higher...