Certainly we'll provide you with written background on some of this information.
We have come a tremendously long way in our ability to assess the risk of reoffending. I've been doing this type of research for 30 years. At the time when I began, much of risk assessment was pretty well based on professional judgment. If you were going to go through training as a psychiatrist or psychologist, you were expected to know who was high risk and who wasn't.
We are continually moving, and 20 years later we have a much more accurate picture of what are the key risk factors for criminal behaviour, what's more important than other factors. We know that certainly everybody here would easily recognize that criminal history is important. But pro-criminal thinking is one of the most important predictors of criminal behaviour, as are the associates whom you hang around with, and certainly anti-social personality features. I'm not specifically talking about psychopathy here. I'm talking about personality features such as impulsiveness, lack of self-control, self-centredness. We have been able to rank in order what are the most important predictors and what are the least important.
As I'm sure my colleague will say, Correctional Service is in the business of assessing these factors in a reliable way. The highest-risk offender—