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Doehring provides useful information for planning, understanding, and evaluating research in human communication disorders. This important volume, now in its third edition, describes the methods used in various forms of research designs. A new section on authentic assessment in chapter 16, a revised section in chapter 19 on structural equation modeling, an expansion of chapter 21 to include an example of research strategies, and a new chapter (20) that describes methods for evaluation are some of the improvements made to this edition. Part I describes the group research methods most commonly used in research on human communication disorders. Equal attention is paid to research design and data analysis. Part IIdescribes other research methods, including observational, case study, and descriptive methods; statistical power analysis, meta-analysis, and multiple methods; single-subject designs; qualitative methods; structural equation modeling, maximum likelihood estimation, loglinear analysis, and sequential analysis. The new chapter desribes evidence-based practice, clinical outcome research, survival analysis, and action research. Part III discusses the role of researchers as strategists and looks into the future of research in human communication disorders. Advice about how to critically evaluate research, conduct research, and write research reports is given in the appendices.