Three methods of estimating the general factor (g) in the WISC and the WAIS were compared, using the standardization data for the two scales. Estimates of the mean g-loading across subtests and age levels ranged from .57 to .63 for the WISC and from .73 to .76 for the WAIS. Although differences among these estimates were statistically significant, it was concluded that the three methods provide closely comparable results.
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References
1.
BlahaJ.WallbrownF. H.WherryR. J.Hierarchical factor structure of the Wechsler Intelligence Scale for Children. Psychological Reports, 1974, 35, 771–778.
2.
CohenJ.The factorial structure of the WAIS between early adulthood and old age. Journal of Consulting Psychology, 1957, 21, 283–290.
3.
CohenJ.The factorial structure of the WISC at ages 7–6, 10–6, and 13–6. Journal of Consulting Psychology, 1959, 23, 285–299.
4.
JensenA. R.g: Outmoded theory or unconquered frontier?Creative Science & Technology, 1979, 2(3), 16–29.
5.
KaufmanA. S.Factor analysis of the WISC-R at 11 age levels between 6Y2 and 16Y2 years. Journal of Consulting and Clinical Psychology, 1975, 43, 135–147.
6.
LindquistE. F.Design and analysis of experiments in psychology and education. Boston: Houghton Mifflin, 1953.
7.
SilversteinA. B.An alternative factor analytic solution for Wechsler's intelligence scales. Educational and Psychological Measurement, 1969, 29, 763–767.
8.
WallbrownF. H.BlahaJ.WherryR. J.The hierarchical factor structure of the Wechsler Adult Intelligence Scale. British Journal of Educational Psychology, 1974, 44, 47–56.
9.
WechslerD.Wechsler Intelligence Scale for Children: Manual. New York: Psychological Corp., 1949.
10.
WechslerD.Manual for the Wechsler Adult Intelligence Scale. New York: Psychological Corp., 1955.
