A 6-yeаr-оld bоy is brоught to the doctor by his pаrents becаuse of his persistently disruptive behavior over the past year. The boy’s teacher reports that he has been provoking his peers and getting in physical altercations several times a week. At home, his parents have noticed that he frequently lashes out vindictively. Last week, he intentionally threw his mother’s favorite glass vase on the floor after being chastised for not doing his chores. This child’s symptom profile suggests a potential future risk of developing which of the following disorders