validity in case studies

Case Study Research: Design and Methods

Providing a complete portal to the world of case study research, the Fifth Edition of Robert K. Yin’s bestselling text offers comprehensive coverage of the design and use of the case study method as a valid research tool. The book offers a clear definition of the case study method as well as discussion of design and analysis techniques. This book includes exemplary case studies drawn from a wide variety of academic fields. 

Five Misunderstandings About Case-Study Research

This article , written by Bent Flyvbjerg (Aalborg University, Denmark) examines five common misunderstandings about case-study research: (a) theoretical knowledge is more valuable than practical knowledge; (b) one cannot generalize from a single case, therefore, the single-case study cannot contribute to scientific development; (c) the case study is most useful for generating hypotheses, whereas other methods are more suitable for hypotheses testing and theory building; (d) the case study contains a bias towards verification; and (e) it is often difficult to summarize specific case studies. This article explains and corrects these misunderstandings one by one and concludes with the Kuhnian insight that a scientific discipline without a large number of thoroughly executed case studies is a discipline without systematic production of exemplars, and a discipline without exemplars is an ineffective one. Social science may be strengthened by the execution of a greater number of good case studies.