The new edition of this best-selling guide carefully leads the user through the process of using SPSS to analyze psychological data. The authors review the basic issues regarding design and proceed through all of the major statistical techniques used in psychology, from introductory to advanced level. Readers are introduced to the rationale and use of each test and shown how to choose, perform, and report the statistical analysis of their own data. SPSS for Psychologists, 3/E covers SPSS versions 12 and 13, but is also appropriate for those using versions 9 - 11. The new edition highlights the differences between the versions and now includes coverage of reliability measures, partial correlations, and using statistics for scale constructions. Comprehensive in coverage, the book reviews advanced statistical material such as ANCOVA, factor analysis, logistic regression, and discriminant analysis as well as issues related to research design, data entry, data handling, data manipulation and modification in SPSS; how to calculate basic statistical procedures using SPSS; tests of difference for two sample designs, tests of correlation, and tests for nominal and categorical data; and tests for experiments involving complex designs or for data obtained using surveys. Each statistical test features a brief description, an example of typical or actual research that might be analyzed using the test, and step-by-step instructions on how to perform the test using SPSS. Numerous screenshots and detailed descriptions of the steps required to perform the test, are included. Annotated examples of SPSS output help the reader understand and report the results of their analyses. Information on how to insert output into a text document is also included. The data used in the examples is found in an appendix and on a book specific Web site. Intended for use as a supplementary text in statistics/research methods courses in psychology and related social sciences, a basic knowledge of Windows is assumed.