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Fullerton-Cattell law


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In psychophysics, the proposition that for any stimulus intensity I, the difference threshold ΔI is proportional to the square root of I, hence ΔI = kĪ, where k is a constant, rather than being proportional to I itself, as in Weber's law, which is both simpler and generally more accurate. [Named after the US psychologists George Stuart Fullerton (1859–1925) and James McKeen Cattell (1860–1944) who formulated it in 1892]

Subjects: Psychology.


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