Case Study Research : Design And Methods →

To defend against criticisms of lack of rigor, Yin offers four tests for quality: construct validity , internal validity , external validity , and reliability . Analytic and Reporting Strategies

Robert K. Yin's Case Study Research: Design and Methods is widely regarded as a foundational text for conducting rigorous qualitative research. First published in 1984 and currently in its sixth edition (as Case Study Research and Applications ), the book provides a systematic framework for the entire research process, from initial design to final reporting. Case study research : design and methods

Concepts derived from existing literature that guide the study's focus (optional for exploratory cases). To defend against criticisms of lack of rigor,