Abstract
The factors found by the Hotelling method of principal components present the same necessity for rotation as those found by the Thurstone method of multiple factors.
The Thurstone method of multiple factors is here found superior to the Hotelling method of principal components, and is suggested as the method of choice for all problems requiring the determination of elemental components from a group of related variables, since it was found on every point of comparison that, when applied to a correlation matrix of unknown communalities, the Thurstone method was more accurate than the Hotelling method, and also required much less time.
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McCloy, C.H., Metheny, E. & Knott, V. A comparison of the thurstone method of multiple factors with the hotelling method of principal components. Psychometrika 3, 61–67 (1938). https://doi.org/10.1007/BF02289301
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DOI: https://doi.org/10.1007/BF02289301