Abstract
In this study, the authors evaluated the psychometric properties of the Treatment Program Progress (TPP) rating scale, a brief instrument that assesses counselor ratings of patient response to 12-step-oriented substance abuse treatment interventions. In both 3- and 5-day-per-week outpatient programs, the TPP bad good internal consistency reliability. However the TPP demonstrated good interrater reliability and strong predictive validity only in the 5-day program. These preliminary results suggest that the TPP may be used to identify outpatients who are at heightened risk for early dropout, but only when raters have frequent opportunities to observe the patients (i. e., more than 3 times per week).