Which disorder involves aggression towards others and serious violations of rules?

The disorder characterized by aggression towards others and serious violations of rules is Conduct Disorder (CD). This condition typically manifests in younger individuals and includes behaviors such as bullying, physical fights, or the destruction of property. Children and adolescents with Conduct Disorder often exhibit a pattern of behavior that not only disregards social norms but also reflects a lack of empathy towards others.

In contrast, while Oppositional Defiant Disorder (ODD) involves defiance and opposition to authority figures, it does not usually include the level of aggression or serious rule violations seen in Conduct Disorder. Tourette Syndrome and Fragile X Syndrome are neurodevelopmental disorders, with Tourette Syndrome involving motor and vocal tics and Fragile X Syndrome affecting cognitive development and social interaction, neither of which primarily encompass aggressive behaviors or rule-breaking as defining characteristics. Thus, Conduct Disorder is the most accurate answer in this context, highlighting its significant behavioral concerns.