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The first two editions of this book focused on the quantitative approaches to measurement and research methods. This edition has been expanded to include the increasing interest and need for qualitative and mixed methods research designs. This third serves as a broader research handbook with two parts. Part I includes an overview of research methods including chapters on qualitative methods, mixed methods, and quantitative research methods. Part II includes the anthology and instruments, with a review of each measure, that have been updated from the previous editions. It is important to remember that the appropriate research method(s) used by the researcher should always be determined by the research questions and the design of the study. Since 2000, additional areas of interest have emerged and have been included in the third edition. For example, the issue of teacher and principal evaluation has come to the forefront with federal and state legislation. Therefore, the indices contain a section on Instruments Available through Commercial Organizations, which include the latest sources for teacher and principal evaluation instruments. Special Features: *A chapter on qualitative and mixed methods research is included. *A chapter on basic quantitative research and statistical procedures is included. *A chapter on multiple regression analysis is included. *A chapter on inferential research methods (t-Test and ANOVA) in included. *A chapter on measurement in quantitative research is included. *A chapter on examples of measurement procedures (reliability, item analysis, and factor analysis is included. *Actual instruments are included as well as psychometric information. *A large number of the bibliographic references are from dissertations that used the instrument. *Current information is provided to help secure a copy of the instrument. *Indices based on author and instrument are provided to help locate an instrument.