Educational Research: Quantitative, Qualitative, and Mixed Approaches, Fourth Edition is a graduated text that introduces readers to the fundamental logic of empirical research and the sources of research ideas. Detailed descriptions guide students through the design and implementation of actual research studies with a balanced examination of quantitative, qualitative, and mixed research. Definitions of key terms are provided in the margins for easy reference and to help students understand the multiple research methods and strategies used in education and related fields.New Features:- Student study site materials are integrated within the text, with the use of marginal icons depicting interactive concept maps, journal articles, and tools and tips.- New "Action Research" activity for each chapter is included.- A chapter on Writing the Research report incorporates changes in new edition of the Publication Manual of the APA, and includes a sample manuscript using APA style.- New exhibits on Egon G. Guba and Donald T. Campbell, and a new table on applying qualitative research validity strategies are incorporated.- New material on research paradigms, types of plagiarism, using free software for random sampling and assignment, nomological vs. ideographic causation are integrated.- Several chapters are slightly shortened and made simpler, without sacrificing any of the book's rigor.