This book is intended for a one-semester or one-term course in educational research. It is designed to enable students to become intelligent consumers of educational research and to introduce its basic principles to those who eventually may be involved in research in their work. The chapters are: (1) "Introduction to Research in Education"; (2) "Variables, Research Problems, and Hypotheses"; (3) "Locating and Reviewing Related Literature"; (4) "Subjects and Sampling"; (5) "Foundations of Educational Measurement"; (6) "Types of Educational Measures"; (7) "Descriptive, Correlational, and Causal-Comparative Research"; (8) "Experimental and Single-Subject Research"; (9) "Analyzing Statistical Inferences"; (10) "Qualitative and Historical Research"; (11) "Analyzing Discussion and Conclusions"; and (12) "The Intelligent Consumer: Putting It All Together." An appendix provides answers to sample text questions. (Contains 26 tables, 15 figures, and approximately 80 references.) (SLD)