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The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia
Self-report plays a key role in the identification of developmental prosopagnosia (DP), providing complementary evidence to computer-based tests of face recognition ability, aiding interpretation of scores. However, the lack of standardized self-report instruments has contributed to heterogeneous re...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society Publishing
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632531/ https://www.ncbi.nlm.nih.gov/pubmed/26543567 http://dx.doi.org/10.1098/rsos.140343 |
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author | Shah, Punit Gaule, Anne Sowden, Sophie Bird, Geoffrey Cook, Richard |
author_facet | Shah, Punit Gaule, Anne Sowden, Sophie Bird, Geoffrey Cook, Richard |
author_sort | Shah, Punit |
collection | PubMed |
description | Self-report plays a key role in the identification of developmental prosopagnosia (DP), providing complementary evidence to computer-based tests of face recognition ability, aiding interpretation of scores. However, the lack of standardized self-report instruments has contributed to heterogeneous reporting standards for self-report evidence in DP research. The lack of standardization prevents comparison across samples and limits investigation of the relationship between objective tests of face processing and self-report measures. To address these issues, this paper introduces the PI20; a 20-item self-report measure for quantifying prosopagnosic traits. The new instrument successfully distinguishes suspected prosopagnosics from typically developed adults. Strong correlations were also observed between PI20 scores and performance on objective tests of familiar and unfamiliar face recognition ability, confirming that people have the necessary insight into their own face recognition ability required by a self-report instrument. Importantly, PI20 scores did not correlate with recognition of non-face objects, indicating that the instrument measures face recognition, and not a general perceptual impairment. These results suggest that the PI20 can play a valuable role in identifying DP. A freely available self-report instrument will permit more effective description of self-report diagnostic evidence, thereby facilitating greater comparison of prosopagnosic samples, and more reliable classification. |
format | Online Article Text |
id | pubmed-4632531 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | The Royal Society Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-46325312015-11-05 The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia Shah, Punit Gaule, Anne Sowden, Sophie Bird, Geoffrey Cook, Richard R Soc Open Sci Psychology and Cognitive Neuroscience Self-report plays a key role in the identification of developmental prosopagnosia (DP), providing complementary evidence to computer-based tests of face recognition ability, aiding interpretation of scores. However, the lack of standardized self-report instruments has contributed to heterogeneous reporting standards for self-report evidence in DP research. The lack of standardization prevents comparison across samples and limits investigation of the relationship between objective tests of face processing and self-report measures. To address these issues, this paper introduces the PI20; a 20-item self-report measure for quantifying prosopagnosic traits. The new instrument successfully distinguishes suspected prosopagnosics from typically developed adults. Strong correlations were also observed between PI20 scores and performance on objective tests of familiar and unfamiliar face recognition ability, confirming that people have the necessary insight into their own face recognition ability required by a self-report instrument. Importantly, PI20 scores did not correlate with recognition of non-face objects, indicating that the instrument measures face recognition, and not a general perceptual impairment. These results suggest that the PI20 can play a valuable role in identifying DP. A freely available self-report instrument will permit more effective description of self-report diagnostic evidence, thereby facilitating greater comparison of prosopagnosic samples, and more reliable classification. The Royal Society Publishing 2015-06-24 /pmc/articles/PMC4632531/ /pubmed/26543567 http://dx.doi.org/10.1098/rsos.140343 Text en http://creativecommons.org/licenses/by/4.0/ © 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Psychology and Cognitive Neuroscience Shah, Punit Gaule, Anne Sowden, Sophie Bird, Geoffrey Cook, Richard The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title | The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title_full | The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title_fullStr | The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title_full_unstemmed | The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title_short | The 20-item prosopagnosia index (PI20): a self-report instrument for identifying developmental prosopagnosia |
title_sort | 20-item prosopagnosia index (pi20): a self-report instrument for identifying developmental prosopagnosia |
topic | Psychology and Cognitive Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632531/ https://www.ncbi.nlm.nih.gov/pubmed/26543567 http://dx.doi.org/10.1098/rsos.140343 |
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