Educational Research: An Introduction, Eighth Edition, is the most comprehensive and widely respected text for scholars and graduate-level students who need to understand educational research in depth and conduct original research for a dissertation or thesis. A complete introduction to the major research methods and types of data analysis used today, this text provides detailed coverage of all facets of research, from the epistemology of quantitative and qualitative scientific inquiry to the design, data collection, analysis, and reporting of a completed study.