Second, the manuscript should be carefully edited as there are a fair number of grammatical and typographical errors, including lack of subject-verb agreement in places (e.g., using “were” and “was” in the same sentence, both referring to the same measure - CU traits), omitted words, and so forth.
This work, as with other recent work, makes clear that the most severely aggressive youth tend to engage in high R2 levels of both proactive and reactive aggression and are otherwise also generally more distressed and dysregulated, as compared with youth who are more moderately aggressive and tend to engage in reactive aggression only, and youth who have low levels of aggression.