“I damage or destroy things belonging to others”) and aggression measures (e.g., “I am mean to others”; “I get in many fights”). These measures have been shown to have excellent psychometric properties including high test-retest reliability, content validity, criterion-related validity, and construct validity (Achenbach & Rescorla, 2001; 2003). Alphas in the present study ranged from 0.84 to 0.88 across the nine assessments.
