This commentary focuses on the current status of assessment in rational-emotive and cognitive-behavior therapy, in the context of making comments about three assessment articles published in the same journal issue. The commentary describes important characteristics of rational-emotive and cognitive-behavior assessment measures, suggests several avenues of psychometric research on behavioral tests of distress tolerance as clinical measures, reviews psychometric and other important properties of existing irrational belief measures, and endorses assessment related to newly proposed anger disorder diagnoses.