Abstract
Based upon recent reviews of evaluation methodology in Organization Development (OD), a description of a viable method for measuring planned organizational change is synthesized. The paper reports on the application of the procedure to a university student counseling center involved in an OD project utilizing an eclectic intervention. A diagnostic, reliability‐tested questionnaire was used in a three year modified multiple time series research design, with a closely matched comparison organization, and data were analyzed for three types of change. Results support the contention that the measurement method is viable for accurately assessing the impact of an OD intervention and thus providing the groundwork for developing a rigorous, empirically‐based theory of OD. However, several problems and tradeoffs are made explicit.