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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 10 — Oct. 1, 1962
  • pp: 1179–1184

Visual Discrimination, an Interpretation in Terms of Detectability Theory

D. J. WEINTRAUB and H. W. HAKE  »View Author Affiliations


JOSA, Vol. 52, Issue 10, pp. 1179-1184 (1962)
http://dx.doi.org/10.1364/JOSA.52.001179


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Abstract

Geometric squares, and rectangles (squares vertically elongated by 2%), were presented singly in a random sequence to three observers. By using the detectability-model parameter d′ as a measure, average discriminability was found to be 1.32. Two-, three-, and four-category response scales were shown to give equivalent discriminability data. Discriminability was not significantly affected by the inclusion of an extraneous stimulus (a square vertically elongated either 1% or 3%) interspersed randomly in the square-rectangle sequence without the observers’ knowledge. The data were interpreted as a favorable empirical test of detectability-theory assumptions applied to a visual discrimination task.

Citation
D. J. WEINTRAUB and H. W. HAKE, "Visual Discrimination, an Interpretation in Terms of Detectability Theory," J. Opt. Soc. Am. 52, 1179-1184 (1962)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-52-10-1179

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