Vernon’s verbal-perceptual model

Influenced by the theory of g-factor, Vernon put his own theory about the structure of intelligence. (Vernon,1964) The structure of human abilities[1] (Vernon,1965)[2]

He put emphasize on g factor in all the mental abilities. He extracted g factor from ability test, then found that those remaining content could be divided into two separate parts. He named those two orthogonal group factors as verbal-educational factor (v:ed) and perceptual-mechanical skill factor (k:m).

v:ed factor : verbal and educational abilities

k:m factor: spatial, practical, and mechanical abilities

This is a rough distinction between verbal and non-verbal intelligence measurement.

verbal perceptual model

Vernon also said that v:ed and k:m can represent different education and cultural experience. The v:ed factor may come from school life and k:m factor comes from skills forming in non-school time. What’s more, Vernon considered that there might be a third special factor named mathematical skill, but it can be included in perceptual-mechanical (k:m) factor.

The difference between Vernon’s verbal-perceptual model theory and Horn and Cattell’s Gf-Gc theory

Vernon’s model about intelligence looks similar to the fluid-crystallized (Gf-Gc) intelligence theory because they both agree with g factor and have two more different dimensions on intelligence structure. In fact, Gf-Gc model has more broad factors such as special visualization (Gv), retrieval (Gr) or speed factor (Gs). Remodeling old models of intelligence[3]

“One reason why the Horn-Cattell model has more broad group factors than Vernon’s is simply that they analysed a very much larger and more carefully chosen battery of tests. This probably explains why the Vernon model does not contain any group factors corresponding to Cattell’s Gr (and why it had to be added by Johnson and Bouchard, 2005, when they tried to fit the Vernon model to a much larger data set). ” IQ and human intelligence[4]

See also

Further reading

References

  1. ↑ Vernon, P. E.(1964). The structure of human abilities. London: Methuen
  2. ↑ Vernon, P. E. (1965). "Ability factors and environmental influences". American Psychologist 20: 723–733.
  3. ↑ Horn, J. L.(1985). " Remodeling old models of intelligence. In B. B. Wolman (Ed.), Handbook of intelligence: Theories, measurements, and applications (pp. 267–300). New York: Wiley
  4. ↑ Mackintosh, N.(1998). IQ and human intelligence. Oxford: Oxford University Press.
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