・Authors: Yuji Itoh, Hiroshi Miura, & Daisuke Shimane

・Title: A descriptive study on misidentifications of a person as a familiar person in an everyday situation

・Journal（書誌情報）: Scientific Reports 13, Article number: 8530 (2023)

・doi: https://doi.org/10.1038/s41598-023-35094-8

・論文URL: https://www.nature.com/articles/s41598-023-35094-8

・Abstract: The purpose of this study is to show the characteristics of person misidentifications, that is, experiences in which persons are misidentified as known persons. A total of 121 participants were asked how many times they misidentified persons in the last year and details of a recent person misidentification were recorded through a traditional questionnaire. Additionally, they answered questions in a diary method questionnaire, about the details of person misidentification each time they experienced it, during the two-week survey period. The questionnaires revealed that the participants misidentified both known and unknown persons as familiar persons approximately six (traditional questionnaire) or 19 (diary method) times a year on average, regardless of whether they expected the persons to be there. They were more likely to misidentify a person as a familiar than as a less familiar person. It was also shown that the similarity of the faces of the person actually seen and the person they were mistaken for was not as high as the similarities of build and clothing. This study is expected to provide suggestions for models of person identification and enhance the research on errors.

・著者Contact先の email: yitoh[at]keio.jp（[at]を@に変えてください。）

・日本語によるコメント:
私たちはしばしば、日常生活において見かけた人物を別の知人だと誤って判断することがあります。本研究では、日常生活におけるこの様な「人違い」の特徴について、通常の質問紙および日誌法を用いて調査しました。その結果、人は１年間に6回（質問紙）もしくは19回（日誌法）程度の人違いを経験すること、未知の人物を見て特定の知人だと判断する場合も、既知の人物を見て別の知人だと判断する場合もあることなどが明らかになりました。まだ探索的な段階の研究ですが、顔知覚や人物同定に関する心理学的研究がほとんど扱っていないタイプの人物（誤）同定に焦点を当てた研究であり、人物同定研究の新しい方向を示すものと考えています。

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