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Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality

Well-trained experts in pearl grading have been thought to evaluate pearls according to their glossiness, interference color, and shape. However, the characteristics of their evaluations are not fully understood. Using pearl grading experiments, we investigate the consistency of novice (i.e., withou...

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Autores principales: Tani, Yusuke, Nagai, Takehiro, Koida, Kowa, Kitazaki, Michiteru, Nakauchi, Shigeki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3899256/
https://www.ncbi.nlm.nih.gov/pubmed/24466074
http://dx.doi.org/10.1371/journal.pone.0086400
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author Tani, Yusuke
Nagai, Takehiro
Koida, Kowa
Kitazaki, Michiteru
Nakauchi, Shigeki
author_facet Tani, Yusuke
Nagai, Takehiro
Koida, Kowa
Kitazaki, Michiteru
Nakauchi, Shigeki
author_sort Tani, Yusuke
collection PubMed
description Well-trained experts in pearl grading have been thought to evaluate pearls according to their glossiness, interference color, and shape. However, the characteristics of their evaluations are not fully understood. Using pearl grading experiments, we investigate the consistency of novice (i.e., without knowledge of pearl grading) and expert participants’ pearl grading skill and then compare the novices’ grading with that of experts; furthermore, we discuss the relationship between grading, interference color, and glossiness. We found that novices’ grading was significantly less concordant with experts average grading than was experts’ grading; more than half of novices graded pearls the opposite of how experts graded those same pearls. However, while experts graded pearls more consistently than novices did, novices’ consistency was relatively high. We also found differences between the groups in regression analyses that used interference color and glossiness as explanatory variables and were conducted for each trial. Although the regression coefficient was significant in 60% of novices’ trials, there were fewer significant trials for the experts (20%). This indicates that novices can also make use of these two factors, but that their usage is simpler than that of the experts. These results suggest that experts and novices share some values about pearls but that the evaluation method is elaborated for experts.
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spelling pubmed-38992562014-01-24 Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality Tani, Yusuke Nagai, Takehiro Koida, Kowa Kitazaki, Michiteru Nakauchi, Shigeki PLoS One Research Article Well-trained experts in pearl grading have been thought to evaluate pearls according to their glossiness, interference color, and shape. However, the characteristics of their evaluations are not fully understood. Using pearl grading experiments, we investigate the consistency of novice (i.e., without knowledge of pearl grading) and expert participants’ pearl grading skill and then compare the novices’ grading with that of experts; furthermore, we discuss the relationship between grading, interference color, and glossiness. We found that novices’ grading was significantly less concordant with experts average grading than was experts’ grading; more than half of novices graded pearls the opposite of how experts graded those same pearls. However, while experts graded pearls more consistently than novices did, novices’ consistency was relatively high. We also found differences between the groups in regression analyses that used interference color and glossiness as explanatory variables and were conducted for each trial. Although the regression coefficient was significant in 60% of novices’ trials, there were fewer significant trials for the experts (20%). This indicates that novices can also make use of these two factors, but that their usage is simpler than that of the experts. These results suggest that experts and novices share some values about pearls but that the evaluation method is elaborated for experts. Public Library of Science 2014-01-22 /pmc/articles/PMC3899256/ /pubmed/24466074 http://dx.doi.org/10.1371/journal.pone.0086400 Text en © 2014 Tani et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Tani, Yusuke
Nagai, Takehiro
Koida, Kowa
Kitazaki, Michiteru
Nakauchi, Shigeki
Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title_full Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title_fullStr Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title_full_unstemmed Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title_short Experts and Novices Use the Same Factors–But Differently–To Evaluate Pearl Quality
title_sort experts and novices use the same factors–but differently–to evaluate pearl quality
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3899256/
https://www.ncbi.nlm.nih.gov/pubmed/24466074
http://dx.doi.org/10.1371/journal.pone.0086400
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