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JF: I think the Wechsler tests are very good for their purpose, and that is predicting academic performance at school.
I think that what they should do is find which items on the Wechsler test correlate with, let's say, the Vineland test, which is supposed to test people's ability to cope with everyday life, and those items on the Wechsler test should probably be used as a special test for mental retardation.
An assessment of the development structure and use of the Wechsler tests of intelligence.
Subsequent standardization samples of the Wechsler tests have confirmed the male advantage on the Information subtest.
A weakness of these results obtained from Wechsler standardization samples is that the Information subtest of the Wechsler tests is quite short.
The Wechsler tests contain information tests which are likewise tests of general knowledge.
Although the weight of the evidence indicates that there is a negligible sex difference in vocabulary, as Kimura concludes, there is consistent evidence that males obtain higher average scores than females on the Information subtest of the Wechsler tests. This male advantage is shown in six standardization samples of the Wechsler tests in the US and Europe in Table 1, which gives the sex differences on the verbal IQs and the Information subtests expressed as d scores (the difference between the male and females means divided by the standard deviations).
The Wechsler tests; the Wechsler Intelligence Scale for Children, Third Edition (for children age 6 years to 16 years, 11 months); and the Wechsler Primary and Preschool Scale of Intelligence, Revised (for children age 3 years to 7 years, 3 months) are most often used.
The extra achievement in performance on the Wechsler tests as compared to to two-handed peers, can then be perceived as a consequence of the handicap.
The g factor derived from the Wechsler tests is more likely to reflect gc rather than gf.
(3) The adult male advantage of around 4 IQ points obtained by averaging the verbal comprehension, reasoning and spatial abilities is not generally found in the full scale IQ of the Wechsler tests or in the overall IQ of similar tests because the spatial abilities are typically under-represented in these tests.
Jensen's analyses of the g vector also include studies relating the vector to vectors defining the predictive validities of sub-test scores on the Wechsler tests for measures of academic performance.