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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 45, Iss. 7 — Jul. 1, 1955
  • pp: 514–521

Some Problems Related to Testing Color Vision with the Nagel Anomaloscope

INGEBORG SCHMIDT  »View Author Affiliations

JOSA, Vol. 45, Issue 7, pp. 514-521 (1955)

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The report concerns a discussion of some methodological and statistical problems in testing color vision with the Nagel anomaloscope and an evaluation of records compiled during a period of four and a half years’ research work at the U. S. Air Force School of Aviation Medicine, Randolph Field, Texas. Following topics are dealt with: elimination of training effects and determination of the total number of readings required to detect specified minimum practical differences between individuals; application and frequency distribution of the anomalous quotient; determination of the normal matching range of mixtures and of comparison yellow; and test-retest reliability of the Nagel anomaloscope.

INGEBORG SCHMIDT, "Some Problems Related to Testing Color Vision with the Nagel Anomaloscope," J. Opt. Soc. Am. 45, 514-521 (1955)

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  3. I am indebted to Mr. A. W. Kimball, Jr., for performing this analysis and to Mr. M. Bryan Danford for giving me valuable advice, both from Department of Biometrics, U. S. Air Force School of Aviation Medicine, Randolph Air Force Base, Randolph Field, Texas.
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  20. Miss A. Baranovsky, of the Public Health Department of the Columbia-Presbyterian Medical Center, New York, gave helpful advice with this analysis.

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