THE SPEED AND ACCURACY OF DISCRIMINATING DIFFERENCES IN HUE, BRILLANCE, AREA, AND SHAPE.
MOUNT HOLYOKE COLL SOUTH HADLEY MASS PSYCHOPHYSICAL RESEARCH UNIT
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CONCLUSIONS People can discriminate differences in hue and in shape faster and more accurately than differences in area or in brilliance. On any visual display, therefore, the most important symbols should differ in hue or in shape. As the difference between two areas or two hues is increased, discrimination time is decreased. After a while, increasing the difference between two hues or two areas has no effect on discrimination time. That is, this time gradually approaches a constant discrimination time for both aspects. This constant discrimination time seems to be the same whether we are discriminating hue differences or shape differences. Therefore, the time required to discriminate very large stimulus differences may be the same no matter what aspect we are looking at. Author
- Human Factors Engineering and Man Machine Systems