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An evaluation of Suspect Target Management Plan (STMP)

Release date: 6.00am Tuesday, 13 October 2020

Link to report summary

A new study released today by the Bureau of Crime Statistics and Research (BOCSAR) shows that the New South Wales (NSW) Police Force's Suspect Target Management Plan (STMP) is an effective tool for reducing crime.

STMP is an initiative designed to reduce crime among high risk individuals through proactive policing strategies. Two types of STMP exist: STMP-II, which was introduced in May 2005 and aims to reduce general offending; and DV-STMP, which was introduced in October 2015 and aims to reduce domestic violence (DV) related crime.

The BOCSAR study examined the offending rates of individuals in the 12 months before and after their placement on STMP-II (n=10,103) or DV-STMP (n=1,028) and found that both programs were associated with very large reductions in crime. 

The study estimates;

  • a 16% decrease in the probability of at least one new violent or property crime within 12 months of being placed on STMP-II and
  • a 43% reduction in the probability of at least one new DV offence within 12 months of being placed on DV-STMP.

STMP-II was found to be more effective for young people and non-Aboriginal people. The study also found that the crime reduction benefit for both programs appears to operate predominately through deterrence rather than incapacitation. This is particularly true for DV-STMP and for young people placed on STMP-II.

Commenting on the findings Executive Director at BOCSAR, Jackie Fitzgerald, said the evaluation filled an important gap in understanding the impact of this key policing program. "STMP has been criticised for targeting vulnerable groups such as juveniles and Aboriginal people. While our evaluation confirms that these groups are over-represented among STMP participants, this now needs to be considered in light of the considerable crime reduction associated with participating in the program."

Further enquiries: Jackie Fitzgerald, Executive Director 0423 139 687
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