The CDP collected data on self-reported externalizing behavior using Achenbach’s Youth Self Report (YSR; Achenbach, 1991) at ages 12, 14, 15, 16, 17, and 19 and using the Young Adult Self Report (YASR; Achenbach, 1997) at ages 20, 21, and 22. While parent- and teacher-reported versions were also administered (i.e., CBCL and TRF, respectively), only self-reported behavior was assessed beyond age 17. This widely-used assessment battery consists of 113 items in the Youth version and 123 items in the Young Adult version, for which the participant indicates whether the behavior is not true, somewhat or sometimes true, or very or often true (scored 0, 1, and 2, respectively). The Externalizing Scale consists of 30 items in the Youth version and 28 items in the Young Adult version comprising both delinquency (e.g., “I don’t feel guilty after doing something I shouldn’t”; “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,
