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This self-report questionnaire, the Twenty-item prosopagnosia index (PI20), assesses the presence and severity of prosopagnosic traits.
Researchers may freely use the PI20 for academic purposes. Please cite the measure as follows: Shah, P., Gaule, A., Sowden, S., Bird, G., & Cook, R. (2015). The 20-item prosopagnosia index
(PI20): A self-report instrument for identifying developmental
prosopagnosia. Royal Society Open Science, 6: 140343.
Please contact the lead author (richard.cook@bbk.ac.uk) before using the PI20 for non-research applications (e.g. on media websites, in healthcare or clinical settings).
A printable version of the PI20 is also available for free download with guidance on scoring and interpretation. pdf
This self-report questionnaire, the Twenty-item prosopagnosia index (PI20), assesses the presence and severity of prosopagnosic traits.
Researchers may freely use the PI20 for academic purposes. Please cite the measure as follows:
Shah, P., Gaule, A., Sowden, S., Bird, G., & Cook, R. (2015). The 20-item prosopagnosia index (PI20): A self-report instrument for identifying developmental prosopagnosia. Royal Society Open Science, 6: 140343.
Please contact the lead author (richard.cook@bbk.ac.uk) before using the PI20 for non-research applications (e.g. on media websites, in healthcare or clinical settings).
A printable version of the PI20 is also available for free download with guidance on scoring and interpretation. pdf
