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A second box-end scoring artifact in the Farnsworth-Munsell 100-hue test



A second box-end scoring artifact in the Farnsworth-Munsell 100-hue test



Investigative Ophthalmology & Visual Science 34(3): 503-506



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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Accession: 008074484

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PMID: 8449669


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