Answer to Question 1
Time of onset affects symptom patterns, severity and outcomes.
Life-course trajectory: usually starts early in development; more often displayed by boys; more likely to have a history of ODD, display more aggression, and have a family history of antisocial behavior
Adolescence-limited trajectory: behavioral symptoms begin in adolescence; generally less problematic over time although still can impact daily functioning
Girls may display a delayed onset CD with risks such as pregnancy and later antisocial behavior
Answer to Question 2
A