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A second box-end scoring artifact in the Farnsworth-Munsell 100-hue test
1Department of Psychology, University of Stirling, United Kingdom.
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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