First, I want to say that I have NOT read this book; I have some comments based on its table of contents. I teach research methods in education, and have served on over a hundred dissertation committees in education and other fields (including several dissertations in psychology), and I would not use or recommend this book primarily because of its extremely limited treatment of qualitative research. Despite the book cover's claim that the book deals with "the entire range of research methodologies in psychology", the coverage of qualitative methods appears to be limited to one chapter on naturalistic and case-study methods. (A second chapter which deals with field research in fact seems to focus on quasi-experimental and single-subject designs, which are not qualitative.) The rest of the book is heavily quantitative/experimental in its approach (there are three chapters on experimental design alone). It seems revealing that although there are sections on the limitations of naturalistic and case study research and correlational and differential research, there is no explicit section on the limitations of experimental research. There is also no discussion of one of the most common qualitative approaches used in psychology--the qualitative interview study, which is different from a "case study". (For more on this approach, I recommend "Learning from Strangers: The Art and Method of Qualitative Interview Studies", by the psychologist Robert Weiss.)
If you are a student in a very quantitatively-oriented psychology department, this may be a useful book for you. However, at a time when many research methods books are devoting much more space to qualitative methods, Graziano and Raulin's book seems a bit anachronistic. Several highly regarded research methods textbooks that are more even-handed in their coverage are David Krathwohl, Methods of Educational and Social Science Research: An Integrated Approach (second edition, 1998), and Colin Robson, Real World Research: A Resource for Social Scientists and Practitioner-Researchers (1993; second edition forthcoming). There is also an enormous literature on qualitative methods specifically; simply search this site under "qualitative research".
