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A Homicide Hot Spots Patrol Test in Trinidad and Tobago Commissioner of Police (Ag) Stephen Williams Trinidad & Tobago. 6th International Conference on Evidence-Based Policing Tuesday 9 th July 2013. Background.

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A Homicide Hot Spots Patrol Test in Trinidad and Tobago Commissioner of Police (Ag) Stephen Williams Trinidad & Tobago

6th International Conference on Evidence-Based Policing

Tuesday 9th July 2013


Background
Background

  • A sharp increase in the number of homicide cases in T&T during the last decade

  • Over 60% attributed to gang-related activity

  • Yet even within high-crime areas, violence in T&T tends to be concentrated in smaller, micro-level crime places – a strong justification for hotspot policing

  • Cambridge University <> TTPS partnership


Spatial and temporal concentrations of homicides in t t n 1 662 1 jan 2009 21 jan 2013
Spatial and Temporal Concentrations of Homicides in T&Tn=1,6621 Jan 2009 – 21 Jan 2013


Spatial concentrations port of spain as a case study
Spatial Concentrations – Port of Spain as a case study




Targets and aims
Targets and Aims (n=138 in

  • Reduce Serious Crime by 50% compared to control conditions

  • Use all 3 “Triple Ts” of Evidence Based Policing

    • Targeting the power few

    • Testing the Intervention through rigorous science and

    • Tracking with GPS tracking and effective management (station-level Compstat)


Selection of targets
Selection of Targets (n=138 in

  • All Police Station Districts that have eligible hotspots within their geographic boundaries

  • Top percentile that is responsible for most of crime and disorder in Trinidad and Tobago

  • Excluding Laventille

  • Focus heavily on violent crimes (shootings, woundingsand homicides) and overall crime harm index

  • Focus indirectly on all other serious street crimes

  • Increase legitimacy of T&T Police through effective but fair procedures


Proposed program
Proposed Program (n=138 in

  • Station-Level Compstat Every 14 days

    --hearts and minds, targeting predicted crime

  • Hot Spot Patrols Hot Times—primarily in vehicles

  • Patrol Tracking Maps for Compstat Discussion

  • Searches for Guns

  • Roadblocks Stop & Search


Process of random assignment
Process of Random Assignment (n=138 in

  • Rank-Order all T&T Stations according to resources available (n of vehicles, manpower, etc.) and n of serious incidents in 12 months (shootings, homicides, woundings)

  • Exclude BessonStreet Police Station--all treatment *

  • Exclude stations with fewer than 5 incidents in 12 months

  • Random assignment of stations across districts

    creating 24 pairs

    ______

    * Extreme outlier with 188 incidents; next in rank is Morvant Police Station with 49 incidents


Grade A (n=138 in


Tracking patrols
Tracking Patrols (n=138 in


Gps tracking
GPS Tracking (n=138 in

  • AVL GPS-based trackers

  • Hand held GPS trackers

  • Crucial: It will help us measure the link between police presence and crime

  • As crucial: Officers’ safety!



Bi weekly station level compstat
Bi-Weekly Station-Level (n=138 in Compstat

  • Common practice in T&T at Division level, but not yet at station level

  • Ongoing feed of data from CAPA

  • Winning the hearts and minds of officers with:

    • Positive and negative reinforcements

    • Quick response to issues: Discussing challenges and obstacles at the tactical level

    • Accountability: ownership of problems at hotspots by designated officers


Outcomes
Outcomes (n=138 in

  • N of all crimes

  • N of homicides

  • Tankebe’s legitimacy surveys

  • Crime harm index


Cameras
Cameras? (n=138 in

  • ….


A (n=138 in Homicide Hot Spots Patrol Test in Trinidad and TobagoCommissioner of Police (Ag) Stephen Williams Trinidad & Tobago

6th International Conference on Evidence-Based Policing


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