Do the same risk factors predict recidivism in both male and female youth? The current research obtained historical data about a sample of 936 young people who received a Youth Justice (YJ) Intake to Child, Youth and Family (CYF) during 2002. Statistical analyses were performed to develop separate models to predict recidivism in males and females. The risk factors that predicted recidivism for males and females were significantly different. These models were then tested against the opposite gender’s data to see whether there was a significant reduction in predictive validity. Only when the female model was applied to the male data was there a significant reduction in predictive validity.