Psychological assessment is one of the core activities of professional psychologists. The endproduct of assessment is usually a psychological report. Whereas there is extensive research guiding most aspects of psychological assessment, there is an overall paucity of research on the psychological report itself. As a result, clinicians usually rely on precedent, sample reports, folklore, habit, and intuition. This series has been organized to present a summary of what is known regarding research and issues related to psychological reports. The intended result is that clinicians will have more solid, empirically based guidance on how best to write their reports. It is also hoped that an agenda for research will be clearly articulated.