New to this Edition • Includes 11 in-depth applications that show how researchers have implemented case study methods successfully. • Increases reference to relativist and constructivist approaches to case study research, as well as how case studies can be part of mixed methods projects. • Places greater emphasis on using plausible rival explanations to bolster case study quality. • Discusses synthesizing findings across case studies in a multiple-case study in more detail • Adds an expanded list of 15 fields that have text or texts devoted to case study research. • Sharpens discussion of distinguishing research from non-research case studies. • The author brings to light at least three remaining gaps to be filled in the future: • how rival explanations can become more routinely integrated into all case study research; • the difference between case-based and variable-based approaches to designing and analyzing case studies; and • the relationship between case study research and qualitative research.