Research Methods in Applied Behavior Analysis, third edition, is a practical and accessible text that provides the beginning researcher with a clear description of how behavior analysts conduct applied research and submit it for publication.In a sequence of ten logical steps, this text covers the elements of single-case research design and the practices involved in organizing, implementing, and evaluating research studies. This revision covers important new topics for consideration when designing a study, including ecological validity, procedural fidelity, and the consecutive controlled case series design, which includes replications of single-cases and the statistical analysis of accumulated studies. Also included are chapter summaries, specific tips for master’s and doctoral researchers, and recommended procedures for BCBA consultants.Rich with details from the authors’ vast experience and numerous examples from published research, this text is an indispensable resource for students of applied behavior analysis and for practicing behavior analysts.