Problems in the measurement of dynamic risk factors in sexual offenders

Having valid and reliable tools to measure 'dynamic' risk factors and minimising assessor bias is said to be critical in helping to make decisions regarding how individuals convicted of committing crime should be managed and treated, and how resources within the Justice System should be prioritised. This article outlines the problems and issues associated with the measurement of such putative dynamic risk factors (see Ward, 0082"> 2015 [Dynamic risk factors: Scientific kinds or predictive constructs. Psychology, Crime and Law.], 22(1-2), 2-16], this volume for a critique of current conceptions of these), and suggests ways of ensuring that measurement is conducted in the most appropriate way for the population being dealt with. Specifically, we would note that the evidence suggests that psychometric analysis, and structured professional judgment can be used to measure dynamic psychological problems using some tools within some samples. However, their use can be hindered by a number of conceptual factors including how the tests are designed and used, their reliability and validity, the context in which they are used, and the samples used. Finally, we would note that interviews are also an important part in the process of dynamic assessment.