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Journal Article V.—MENTAL TESTS AND MEASUREMENTS Get access J. McK. CATTELL J. McK. CATTELL Prof. Search for other works by this author on: Oxford Academic Google Scholar Mind, Volume os-XV, Issue 59, 1 July 1890, Pages 373–381, https://doi.org/10.1093/mind/os-XV.59.373 Published: 01 July 1890
J. McK. Cattell (Wed,) studied this question.