Barla and HartWick [2] developed an instrument to assess user participation, defined as the extent to which users or their representatives carry out assignments and perform various activities and behaviors during the system development process. The study reported here was designed to replicate and extend this work. Consistent with expectations, four separate facets of user participation were found-Responsibility, Evaluation and Review of IS Work, Communication (users with IS stag users among themselves, and users with senior management) and Hands-on Activity (system design and training). Relationships of these facets to the users' role on the project team, to their influence and satisfaction with the process of system development and to their influence and satisfaction with the system were examined. The results provide a clear and complete picture of user participation in systems development.