An 11-item scale was created to assess conduct problems by matching ADDHEALTH questions to DSM IV-TR (American Psychiatric Association 1994) Conduct Disorder criteria, replicating a measure used previously (Miles et al. 2002). Certain items included yes/no responses, others included a four-point Likert scale ranging from “never” to “5 or more times,” and some open-ended questions required participants to report the number of times they performed an act. Due to the small sample sizes for some responses, a dichotomous measure was constructed for each item to ensure that items were weighted equally.
