Book excerpt: The Handbook of Research Methods in Clinical Psychology presents a comprehensive and contemporary treatment of research methodologies used in clinical psychology. Topics discussed include experimental and quasi-experimental designs, statistical analysis, validity, ethics, cultural diversity, and the scientific process of publishing. Written by leading researchers, the chapters focus on specific applications of research into psychopathology, assessment and diagnosis, therapy, and interventions for both child and adult populations. Special attention is also given to research into professional issues, prevention, and promotion. Research vignettes describe exemplary projects illustrating the essential elements of the research topics. In addition, the editors outline a research agenda for clinical psychologists that demonstrates the exciting future for the field. This handbook coherently illustrates the range of research methodologies used in clinical psychology and is a vital resource for both students and scholars who wish to expand their knowledge. Covers basic methodologies as well as specific applications of research designs. Includes research vignettes that describe exemplary studies and illustrate the essential elements of the research topics. Contains chapters written by active researchers in the field. Outlines a research agenda for clinical psychologists that demonstrates the exciting future for the field. Now available in full text online via xreferplus, the award-winning reference library on the web from xrefer. For more information, visit www.xreferplus.com