Abstract
This study examined the power of a variety of characteristics of the preschool child to predict antisocial behaviour at ages 11 and 15 years. After screening preschool measures for their predictive power, a discriminant function analysis was performed with the five most promising preschool predictors. This function correctly classified 81% of subjects as antisocial at age 11 and 66% as delinquent at age 15. Having preschool behaviour problems was the best predictor of antisocial outcome.