than indicating a clinically relevant aspect of alcohol dependence. A further example is found for the criterion drink more/longer; one that yields high prevalence in most studies. In contrast, Harford and colleagues (2005) report lower prevalence for this criterion based on the symptom wording in the NHSDA. This criterion as defined in the NHSDA is based on the subset of respondents who tried to set limits on drinking amounts (see Appendix in this study1), which departs from the usual assessment in the literature. This wording may be more conservative than the typical wording (using alcohol more or longer than intended) used in other studies. As pointed by Chung and Martin (2005), it is problematic to embed the assumption that a limit on use has been set by the individual in assessing drinking more or longer than intended among adolescents. In this respect, it may be preferable to have set limits as a prerequisite for the symptom criterion larger amounts.
