March 1993
Volume 34, Issue 3
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Articles  |   March 1993
A second box-end scoring artifact in the Farnsworth-Munsell 100-hue test.
Author Affiliations
  • B J Craven
    Department of Psychology, University of Stirling, United Kingdom.
Investigative Ophthalmology & Visual Science March 1993, Vol.34, 503-506. doi:https://doi.org/
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      B J Craven; A second box-end scoring artifact in the Farnsworth-Munsell 100-hue test.. Invest. Ophthalmol. Vis. Sci. 1993;34(3):503-506. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

PURPOSE: To investigate and describe a hitherto unreported scoring artifact in the Farnsworth-Munsell 100-hue Test, arising from the grouping of the caps into four boxes, which causes caps near the ends of a box to score less than caps near the center of a box. This artifact is in addition to a previously reported one, which causes caps near the end of a box to score more than caps in the center of the box. METHODS: Two different statistical simulations were used to generate synthetic cap sequences, which were scored in the normal way. RESULTS: For error scores less than about 500, the new artifact, which depresses scores at the ends of boxes, was found to dominate the pattern of scores. CONCLUSION: The existing published correction for the box-end scoring artifact is inappropriate for scores less than about 500, and therefore should be applied cautiously.

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