The 20-Item Prosopagnosia Items (PI-20) was recently introduced as a self-report measure of face recognition abilities and as an instrument to help the diagnosis of prosopagnosia. In general, studies using this questionnaire have shown that observers have moderate to strong insights into their face recognition abilities. However, it remains unknown whether these insights are equivalent for the whole range of face recognition abilities. The present study investigates this issue using the Mandarin version of the PI-20 and the Cambridge Face Memory Test Chinese (CFMT-Chinese). Our results showed a moderate negative association between the PI-20 and the CFMT-Chinese. However, this association was driven by people with low and high face recognition ability, but absent in people within the typical range of face recognition performance. The implications of these results for the study of individual differences and the diagnosis of prosopagnosia are discussed.

中文翻译：

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自我报告的和客观的面部识别能力之间的关联仅在高于平均水平和低于平均水平的识别器中才明显

最近引入了20个项目的前身检查项目（PI-20），作为面部识别能力的自我报告指标，并作为帮助诊断前身检查的工具。通常，使用该调查表的研究表明，观察者对他们的面部识别能力具有中等至强烈的洞察力。但是，这些见解在面部识别能力的整个范围内是否相等仍然是未知的。本研究使用PI-20的中文版本和Cambridge Face Memory Test Chinese（CFMT-Chinese）来调查此问题。我们的结果表明PI-20与CFMT-Chinese之间存在中等程度的负相关。但是，这种联想是由面部识别能力低下和较高的人驱动的，但是在典型的面部识别性能范围内的人中却没有。