This paper reviewed observational studies that examined feedback for changing staff performance in behavioral treatment programs for clients with cognitive, developmental, or psychiatric disorders. The research findings were integrated into the main stages of staff training and management: pretraining, training, and posttraining. Specific recommendations for using feedback are made including defining process and outcome form and content before training, providing on-the-job supervisory feedback while staff practice self-generated outcome feedback until competency is demonstrated, and after training, maintaining self-generated feedback with emphasis on evaluating staff and client interactions with social validity measures.