Edridge-Green Bead Test
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An early Sorting Test devised by Englishman F.W. Edridge-Green around 1885.
This test consists of a wooden box with four holes labeled: red, yellow, green and blue. There are also ~100 colored beads that each correspond to one of the labeled colors, but vary in chromaticity and shade. The subject simply inserts the beads into the appropriate holes, where they are divided into an internal drawer. The outcome is interpreted qualitatively by the tester. This test – or any Sorting type test – has not been used in any official capacity since ~1925.
See also the Edridge-Green Lantern.
