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The G Coefficient and its Relation to R-Type Factor Analysis

The University of Minnesota

The G coefficient is proven to be an inaccurate indicator of latent relations and, therefore, unacceptable as a measure of association when used in R-type factor analysis. On the other hand, the G coefficient is useful in measuring another type of relation, the simple agreement of scores for a pair of items. If one thinks of the scores for each item as a vector, the G coefficient is functionally related to the Euclidean distance between the endpoints of the two vectors.

Educational and Psychological Measurement, Vol. 47, No. 2, 349-357 (1987)
DOI: 10.1177/0013164487472006


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