Generalizability Theory
Definition
Measurement is a multifacet operation. The measurement framework of generalizability theory has the capacity of estimating construct-based parameters as well as other effects operating in the measurement situation. This implies that the measurement model of generalizability theory goes beyond the well-known and frequently applied one-facet model of Cronbach’s coefficient alpha. Thus, the generalizability framework represents a far more realistic approach to measurement than Cronbach’s alpha. Major contributions to generalizability theory have been offered by its originators Cronbach, Gleser, Nanda, and Rajaratnam (1972) and Cronbach (2004) and later by Brennan (2001) and Cardinet, Tourneur, and Allal (1976, 1981), among others.
Description
Generalizability Theory
According to classical test theory, an observed score is assumed to consist of a “true” and an undifferentiated error score. Applied measurement designs may often involve a blend of different types of error....
References
- Brennan, R. L. (2001). Generalizability theory. New York: Springer.Google Scholar
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