ABSTRACT
Since this treatment of generalizability theory (G theory) is limited to a single chapter, it necessarily provides only a brief introduction to many important aspects of the theory. Despite the brevity, the reader is provided with an overview of all the basic concepts and procedures used in G theory. The primary objective of the chapter is to provide the learner with the background to comprehend common health science education applications of the theory in practice and in research. To achieve this goal, generalizability concepts are presented within the context of a hypothetical performance assessment measurement problem. Computational methods and equations are presented only when they promote the reader’s conceptual understanding of the theory. To assist those interested in delving deeper into the technical aspects of the theory, notation and terminology is largely consistent with Brennan’s authoritative text: Generalizability Theory (Brennan, 2001). Although some research, validity, and reliability applications become apparent only with a more in-depth treatment, this chapter will allow the reader to apply and interpret most of the commonly encountered generalizability designs.
