This study will examine appetitive violence, an emerging problem in young offenders. Appetitive violence is similar to instrumental violence, in that it is proactive; it differs because it is associated with a positive emotional state and has social-emotional, rather than tangible objectives. Media reports suggest appetitive violence is alarmingly common. However, no empirical scrutiny of this type of violence exists. This study will explore the psychological characteristics of youth who engage in appetitive violence and their performance following release from custody. Key outcomes will include the identification of treatment needs necessary for effective programming and enhanced risk assessment for statutory releasing authorities.