Case Study Research : Design And Methods May 2026

Yin distinguishes between single-case designs (used for unique or extreme cases) and multiple-case designs , which follow a "replication logic" to strengthen generalizability.

Establishing the standards for evaluating the results, such as identifying patterns or commonalities. Methodological Framework Case study research : design and methods

Concepts derived from existing literature that guide the study's focus (optional for exploratory cases). Case study research : design and methods

Defining what the "case" is (e.g., an individual, program, or organization) and establishing its boundaries. 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