This paper examined the relationship of DSM-IV CD and ODD with a view to informing the revision process of the disruptive behavior disorders specification in DSM-V. The GSMS is well placed for this purpose, and has already produced a number of relevant papers (Angold & Costello, 1996; Rowe, Maughan, Costello, & Angold, 2005; Rowe et al., 2002). Strengths of the study include the collection of parent and child interview data from a large-scale community sample of boys and girls, and a longitudinal design spanning ages 9-21 years. Data from community samples are important for many of the issues being considered in the revision process, as clinical samples may be subject to referral biases. Four limitations must also be noted. First, the GSMS sample is substantially rural: replication of our results in urban samples and samples covering a wider range of ethnic backgrounds will be important to ensure generalizability. Second, the inherently low prevalence of psychiatric disorders and the less than ideal reliability of psychiatric interviews reduced statistical power to some extent. Set against this concern, the GSMS provides a large
