What behaviors are associated with conduct disorders in individuals under 18 years old?

Disruptive and bullying behaviors are key characteristics of conduct disorders in individuals under 18 years old. These behaviors can manifest as aggression toward people and animals, destruction of property, deceitfulness, or serious violations of rules. Children with conduct disorders may demonstrate a lack of empathy towards others and may often engage in actions that can be harmful or threatening, reflecting difficulties in following social norms and regulations.

Other behaviors that might surface include irritability, impulsivity, and defiance, further underscoring the challenges faced by individuals with conduct disorders. Understanding these behaviors is crucial for identification and intervention, as they often represent a significant deviation from typical developmental behavior and can have substantial implications for the individual's future social, academic, and emotional functioning.

In contrast, the other choices describe behaviors that do not align with the characteristics of conduct disorders. Repetitive behaviors that respect others’ rights and excessive compliance with authority do not indicate an absence of regard for social rules or others' rights, which is central to conduct disorders. Similarly, high academic achievement would not typically correlate with the disruptive and non-compliant behaviors seen in this disorder.