The book outlines a linear but iterative process for conducting research:
Yin identifies five critical components that must be determined at the outset to ensure research quality: Case study research : design and methods
Typically "how" or "why" questions that explore contemporary phenomena within their real-life context. The book outlines a linear but iterative process
Establishing the standards for evaluating the results, such as identifying patterns or commonalities. Methodological Framework and physical artifacts.
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
Researchers are encouraged to use triangulation by drawing from six sources of evidence: documentation, archival records, interviews, direct observations, participant-observation, and physical artifacts.