Retrospective self-reported symptoms of attention-deficit hyperactivity disorder: reliability of the Wender Utah Rating Scale.

We measured the internal consistency and four-week temporal consistency and temporal stability of the Wender Utah Rating Scale and its 25-item short form. The Wender scale is a rationally constructed retrospective self-report rating scale for symptoms of Attention-deficit Hyperactivity Disorder. Both scales manifested excellent internal consistency. Over one month, both versions manifested significant temporal consistency and good temporal stability in the nonclinical sample of 83 successful young adults most likely to be referred for an evaluation of suspected Attention-deficit Hyperactivity Disorder. The collegiate group had a considerably higher Wender score than the original normative group, calling into question the adequacy of the limited normative data. However, both forms of the scale are reliable and comprehensive validation research is advocated.