A brief motivational interviewing intervention with prisoners: when you lead a horse to water, can it drink for itself?

Offenders' readiness to engage in changes that will reduce their risk of reoffending is now recognized to be as important as the design and delivery of programmes that support such change. Interest is growing in both how to increase engagement in change processes, and how to measure any improvements in engagement. This study evaluated the effects of a brief offending-focused motivational interviewing (MI) intervention on reconviction in male prisoners serving sentences for diverse crimes. Men who undertook MI were significantly less likely to be reconvicted than those who did not. The results also served to validate a stage-based measure of readiness to change derived from Prochaska and DiClemente's Transtheoretical Model. Prisoners who were offered MI increased their readiness to change by an average of one stage, while the scores of men who were not remained unchanged. Furthermore - whether men undertook MI or not - change in stage of change predicted reconviction. This was a high-risk sample, making the results intriguing for at least two reasons. First, reductions in recidivism are usually achieved only with much more intensive programmes for high-risk men. Second, according to 'traditional' cognitive - behavioural rehabilitation theory, programmes need to target change in dynamic risk factors directly to reduce reconviction risk. That these results were obtained with men whose initial motivation was low, and in the absence of any 'traditional' criminogenic rehabilitation, raises questions about whether there is more than one mechanism involved in desistance.