Van Lang NDJ
Van Lang N.D.J., Ferdinand R.F., Oldehinkel A.J., Ormel J. & Verhulst F.C. (2005). Concurrent validity of the DSM-IV scales Anxiety Problems and Affective Problems of the Youth Self-Report. Behavior Research and Therapy, 43, 1485-1494.
Measuring symptoms well is important for high quality research. This research investigated whether the world-wide used questionnaire, i.e. Youth Self-Report, is suitable for the measurement of anxiety and depression symptoms. Depressive symptoms were measured well; however, the question is whether anxiety symptoms are measured just as well. The questionnaire may need to be adjusted.