coefficient of concordance

(symbol: W) a numerical index that reflects the degree to which the rankings of k conditions or objects by m raters are in agreement. Its value ranges from 0 (no agreement) to 1 (perfect agreement). Also called Kendall’s coefficient of concordance; Kendall’s W.

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Psychology term of the day

February 21st 2025

Hoover’s sign

a diagnostic test for neurological (as distinct from psychological) hemiplegia in which the individual in a reclining position attempts to raise the paralyzed leg: An individual with true hemiplegia reflexively presses down the heel of the healthy leg during the test. The absence of the downward movement is a positive Hoover’s sign and suggests psychogenic paresis or malingering. [Charles Franklin Hoover (1865–1927), U.S. physician]