Abstract
PROF. KELLEY gives as the sub-title of the little book under notice, “the Purposes and Principles underlying the Selection and the Measurement of Independent Mental Factors, together with Computational Tables”. He presents a new method of factorization which certainly appears simpler than that of Hotelling's method of analysis. He compares the work of Brown and Stephenson, of Tyner, of Godfrey Thomson, with Spearman. We cannot agree with the statement that “the line of argument… is so simple that the meaning of what is accomplished should be clear to the student familiar with the most elementary mathematics”. The mathematics involved are by no means elementary. The author provides us with an analysis of the vocational groups in the United States.
Essential Traits of Mental Life
By Truman L. Kelley. (Harvard Studies in Education, Vol. 26.) Pp. viii + 145. (Cambridge, Mass.: Harvard University Press; London: Oxford University Press, 1935.) 11s. 6d. net.
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[Book Reviews]. Nature 138, 952 (1936). https://doi.org/10.1038/138952c0
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DOI: https://doi.org/10.1038/138952c0