Psychology? It's all in the mind.
(born Sept. 10, 1863, London, Eng.died Sept. 17, 1945, London) British psychologist. He is known for his studies on human mental abilities, particularly intelligence, and especially for the statistical technique (factor analysis) he utilized to examine individual differences in psychological testing and identify the underlying sources of these differences. His works include (1927), (1931), and (1950).
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