A repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate societal norms or rules are violated, as manifested by the presence of three (or more) of the following criteria in the past 12 months, with at least one criterion present in the past 6 months for Conduct Disorder Problem: Aggression to people and animals: often bullies, threatens, or intimidates others often initiates physical fights has used a weapon that can cause serious physical harm to others (e.g., a bat, brick, broken bottle, knife, gun) has been physically cruel to people has been physically cruel to animals has stolen while confronting a victim (e.g., mugging, purse snatching, extortion, armed robbery) has forced someone into sexual activity Destruction of property: has deliberately engaged in fire setting with the intention of causing serious damage has deliberately destroyed others' property (other than by fire setting) Deceitfulness or theft: has broken into someone else's house, building, or car often lies to obtain goods or favors or to avoid obligations (i.e., "cons" others) has stolen items of nontrivial value without confronting a victim (e.g., shoplifting, but without breaking andentering; forgery) Serious violations of rules: often stays out at night despite parental prohibitions, beginning before age 13 years has run away from home overnight at least twice while living in parental or parental surrogate home (or once without returning for a lengthy period) is often truant from school, beginning before age 13 year The disturbance in behavior causes clinically significant impairment in social, academic, or occupational functioning.