Abstract

The study reports the experimental determination of just noticeable differences in color as dependent upon wavelength at 10-mµ steps from 510 to 630 mµ. The method of constant-stimulus differences was used to produce limens in terms of measures both of central tendency and of dispersion of judgments. The data have been analyzed to determine the different functional relationships between various colors and wavelengths. Peak sensitivity was found in the yellow region of the spectrum. The results were discussed in terms of methodological differences between the present and earlier studies and were applied to psychologically unique colors.

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  1. J. H. Parsons, An Introduction to the Study of Colour Vision, (Cambridge University Press, Cambridge, England, 1924) 2nd ed., pp 33–36.
  2. L. A. Jones, J. Opt. Soc. Am. 1, 63 (1917).
  3. H. Laurens and W. F. Hamilton, Am. J. Physiol. 65, 547 (1923).
  4. D. B. Judd, J. Opt. Soc. Am. 22, 72 (1932).
  5. E. P. T. Tyndall, J. Opt. Soc. Am. 23, 15 (1933).
  6. W. D. Wright and F. H. G. Pitt, Proc. Phys. Soc. (London) 46, 459 (1934).
  7. D. L. MacAdam, J. Opt. Soc. Am. 32, 247 (1942).
  8. R. A. Weale, J. Physiol. (London) 113, 115 (1951).
  9. Y. LeGrand, Light, Colour and Vision (John Wiley & Sons, Inc., New York, 1957) p. 274.
  10. M. H. Siegel, J. Opt. Soc. Am. 52, 1067 (1962).
  11. For a more complete description of this method see E. G. Boring, Am. J. Psychol. 28, 280 (1917).
  12. The eye was more sensitive than any available physical instrument for measuring the exact point of congruence of the upper and lower slits.
  13. See reference 8.
  14. See reference 10.
  15. D. Nickerson and W. C. Granville, J. Opt. Soc. Am. 30, 159 (1940).
  16. F. L. Dimmick and M. R. Hubbard, Am. J. Psychol. 52, 242 (1939).

Boring, E. G.

For a more complete description of this method see E. G. Boring, Am. J. Psychol. 28, 280 (1917).

Dimmick, F. L.

F. L. Dimmick and M. R. Hubbard, Am. J. Psychol. 52, 242 (1939).

Granville, W. C.

D. Nickerson and W. C. Granville, J. Opt. Soc. Am. 30, 159 (1940).

Hamilton, W. F.

H. Laurens and W. F. Hamilton, Am. J. Physiol. 65, 547 (1923).

Hubbard, M. R.

F. L. Dimmick and M. R. Hubbard, Am. J. Psychol. 52, 242 (1939).

Jones, L. A.

L. A. Jones, J. Opt. Soc. Am. 1, 63 (1917).

Judd, D. B.

D. B. Judd, J. Opt. Soc. Am. 22, 72 (1932).

Laurens, H.

H. Laurens and W. F. Hamilton, Am. J. Physiol. 65, 547 (1923).

LeGrand, Y.

Y. LeGrand, Light, Colour and Vision (John Wiley & Sons, Inc., New York, 1957) p. 274.

MacAdam, D. L.

D. L. MacAdam, J. Opt. Soc. Am. 32, 247 (1942).

Nickerson, D.

D. Nickerson and W. C. Granville, J. Opt. Soc. Am. 30, 159 (1940).

Parsons, J. H.

J. H. Parsons, An Introduction to the Study of Colour Vision, (Cambridge University Press, Cambridge, England, 1924) 2nd ed., pp 33–36.

Pitt, F. H. G.

W. D. Wright and F. H. G. Pitt, Proc. Phys. Soc. (London) 46, 459 (1934).

Siegel, M. H.

M. H. Siegel, J. Opt. Soc. Am. 52, 1067 (1962).

Tyndall, E. P. T.

E. P. T. Tyndall, J. Opt. Soc. Am. 23, 15 (1933).

Weale, R. A.

R. A. Weale, J. Physiol. (London) 113, 115 (1951).

Wright, W. D.

W. D. Wright and F. H. G. Pitt, Proc. Phys. Soc. (London) 46, 459 (1934).

Other (16)

J. H. Parsons, An Introduction to the Study of Colour Vision, (Cambridge University Press, Cambridge, England, 1924) 2nd ed., pp 33–36.

L. A. Jones, J. Opt. Soc. Am. 1, 63 (1917).

H. Laurens and W. F. Hamilton, Am. J. Physiol. 65, 547 (1923).

D. B. Judd, J. Opt. Soc. Am. 22, 72 (1932).

E. P. T. Tyndall, J. Opt. Soc. Am. 23, 15 (1933).

W. D. Wright and F. H. G. Pitt, Proc. Phys. Soc. (London) 46, 459 (1934).

D. L. MacAdam, J. Opt. Soc. Am. 32, 247 (1942).

R. A. Weale, J. Physiol. (London) 113, 115 (1951).

Y. LeGrand, Light, Colour and Vision (John Wiley & Sons, Inc., New York, 1957) p. 274.

M. H. Siegel, J. Opt. Soc. Am. 52, 1067 (1962).

For a more complete description of this method see E. G. Boring, Am. J. Psychol. 28, 280 (1917).

The eye was more sensitive than any available physical instrument for measuring the exact point of congruence of the upper and lower slits.

See reference 8.

See reference 10.

D. Nickerson and W. C. Granville, J. Opt. Soc. Am. 30, 159 (1940).

F. L. Dimmick and M. R. Hubbard, Am. J. Psychol. 52, 242 (1939).

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