| COHORT | Cohort |
| SITECODE | Actual Code Number on Form |
| TCID | Child's ID Number |
| YEAR | Year of Participation in Study |
| RESP | Respondent Code |
| INTID | Interviewer ID Number |
| CLECNT | Parents Checklist Error Counter |
| SITE | Study Site |
| P3DCL1 | When your child has been teased or threatened, he or she gets angry easily and strikes back. |
| P3DCL2 | Your child always claims that other children are to blame in a fight and feels that they started the trouble. |
| P3DCL3 | When someone accidentally hurts your child (such as by bumping into him or her), he/she assumes that the peer meant to do it, and then reacts with anger/fighting. |
| P3DCL4 | Your child gets other kids to gang up on somebody that he or she does not like. |
| P3DCL5 | Your child uses physical force (or threatens to use force) in order to dominate other kids. |
| P3DCL6 | Your child threatens or bullies others in order to get his or her own way. |
| PCL3TOT | Y3 Parent Checklist - Total |
| PCL3RAG | Y3 Parent Checklist - Reactive Aggr. |
| PCL3PAG | Y3 Parent Checklist - Proactive Aggr. |
| TREATMNT | Treatment Group (Interv/Cntl) |
| NORM | Members of Normative Sample |
| SEX | Sex |
| RACE | Race |