Weighted and unweighted means for estimation: A note on the Humphreys-Dachler and Jensen papers

Demonstrates that the methods used by L. G. Humphreys and P. Dachler to estimate effects in their analysis of Project TALENT data to test A. R. Jensen's theory of intelligence produced biased estimates. A statistical model appropriate for the problem and Humphreys and Dachler's definitions...

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Bibliographic Details
Published in:Journal of educational psychology 1971-02, Vol.62 (1), p.79-80
Main Authors: Fischbach, Thomas J, Walberg, Herbert J
Format: Article
Language:English
Subjects:
Estimation
Human
Intelligence
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Summary:Demonstrates that the methods used by L. G. Humphreys and P. Dachler to estimate effects in their analysis of Project TALENT data to test A. R. Jensen's theory of intelligence produced biased estimates. A statistical model appropriate for the problem and Humphreys and Dachler's definitions of parameters are presented and alternative estimators which are unbiased and have other desirable statistical properties are proposed.
ISSN:0022-0663
1939-2176
DOI:10.1037/h0030726