In 12th grade, participants indicated how often they had engaged in each behavior during the preceding 12 months: gotten
into a fight at school, gotten into a fight outside of school, and hurt someone badly enough to need bandages or a doctor (3 items;
Cronbach's a ¼ .68). Response options ranged from 1 (0 times) to 5 (4 or more times). At age 22, participants indicated how
often they had engaged in each behavior during the preceding 12 months: gotten into a fight, hurt someone badly enough to
need bandages or a doctor, taken part in a group fight (3 items; Cronbach's a ¼ .79). Response options ranged from 1 (0 times) to
5 (4 or more times). Higher scores indicated more violent behavior