This document summarizes research on the psychometric properties of the Outcome Rating Scale (ORS) and Session Rating Scale (SRS). It reports on multiple studies that evaluated the reliability and validity of these measures. The studies found high levels of internal consistency and test-retest reliability for both scales. Validity was established through significant correlations with other measures of client progress and treatment outcome. The ORS and SRS demonstrate good psychometric qualities for monitoring client progress and the therapeutic alliance in routine clinical practice.