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Generalizability in Factorable Domains: "Domain Validity and Generalizability"1

1978/04/01 by Roderick P. McDonald · 30 citations
Decision Sciences · Computer Science · #Psychometric Methodologies and Testing #Advanced Statistical Modeling Techniques #Multi-Criteria Decision Making

paper · doi:10.1177/001316447803800111

Abstract

It is shown that if a behavior domain can be described by the common factor model with a finite number of factors, the squared correlation between the sum of a selection of items and the domain total score is actually greater than coefficient alpha. Equality is attained only if the selected items are parallel. Generalizability can be correctly assessed as a function of the item uniquenesses and the test variance.

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