Resources, Solvability and Detection: A Theoretical Model

  • Richard Timothy CoupeEmail author


The aims of this chapter are to draw on the findings of the substantive chapters to consolidate and develop an understanding of crime solvability and the theoretical underpinnings of the relationships between solvability, resources and detections. The geographical variation in incident solvability, resources and detection outcomes and their origins in jurisdictional crime profiles, varied offender populations and environmental circumstances are examined. The issues of identifying which ‘resource input–evidence output’ activities should be used to investigate different subsets of cases and the importance of strength and numbers of evidence items in solving cases are considered. The importance of lower, middle and higher solvability thresholds for allocating jurisdictional resources and for cost-effective investigative strategies are outlined, and the role of incident solvability in properly appreciating the relationship between crime demand and officer supply is highlighted. Finally, key facets are summarised in a resource–solvability model of crime detection.


Solvability Resources Theory Model Jurisdiction Resource input–evidence output Solvability thresholds Resource–solvability model 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Institute of Criminology, University of CambridgeCambridgeEngland, UK

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