Despite the frequency with which performance feedback interventions are used in organizational behavior management, component analyses of such feedback are rare. It has been suggested that evaluation of performance and objective details about performance are two necessary components for performance feedback. The present study was designed to help clarify which components are required for maximal effectiveness by comparing four conditions: (a) combined evaluative and objective feedback, (b) evaluative feedback alone, (c) objective feedback alone, and (d) no feedback. A total of 105 undergraduate students were recruited to work on a simulated bank check processing task while being exposed to one of the four feedback conditions. The number of checks correctly processed served as the dependent variable. Results suggest that a combination of objective and evaluative feedback is necessary for maximal performance. (Contains 3 tables and 1 figure.)