A Wherry-Wherry (1969) hierarchical factor solution was obtained for the intercorrelations among subtests of the Multidimensional Aptitude Battery for a sample of 3,121 high school students reported by Jackson (1984). An hierarchical arrangement of abilities consisting of a strong g-factor and two primaries corresponding to the verbal-education (v.ed) and spatial-perceptual-mechanical (k:m) parameters from Vernon's 1950 structural model were obtained. This ability arrangement provides construct validity for the Full Scale IQs, Verbal IQs, and Performance IQs from the Multidimensional Aptitude Battery.
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