By Lisa Tompson, Jyoti Belur and Nikola Giorgiou

This report outlines the routes or processes through which Neighbourhood Watch activities might have an impact on crime reduction and other, associated, outcomes. These are broken down into chains of events (the ‘theories of change’ or ‘mechanisms’). Commonly used in evaluation projects, a theory of change is intended to simply but elegantly explain how and why something works . The first step is determining the intended outcomes of the activity, i.e. crime reduction or increased neighbourliness; the second is determining the logical sequence of specific actions and processes that are required to make that outcome likely to happen. The result is a process map that links activities and required conditions to produce intermediate changes and final outcomes. Articulating a theory of change before conducting any evaluation has the advantage of exposing measurement points along the process where data can be collected to evidence whether something is working as assumed. Therefore, measurement points along each theory of change we present are highlighted. Subsequently, the advantages and disadvantages of different data sets that can measure and evidence these points in the theory of change are summarised.

London:UCL, Jill Dando Institute of Crime Science, 2020. 17p.