How do you measure the absence of an event? Well, that was the question posed by a security management student today. For the sake of discussion consider the generally accepted standard response and blog-it-out!
“Assessing the success of crime prevention measures is always problematic because, in effect, what is being attempted is to measure the extent to which certain events did not happen and to attribute causal explanations to those “non-events”. While it is possible to measure changes in the incidence of crime within the target area and to hypothesize a connection between these changes and the the crime prevention measure/initiative , it is not possible to state with absolute certainty that the latter is entirely, or even partially, responsible for the former”.
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