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A new approach to diagnosing and researching developmental prosopagnosia: Excluded cases are impaired too by Edwin J. Burns; Elizabeth Gaunt; Betiel Kidane; Lucy Hunter; Jaylea Pulford is a Psychology article available to read on EtoBox.

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## Abstract Developmental prosopagnosia is characterized by severe, lifelong difficulties when recognizing facial identity. Unfortunately, the most common diagnostic assessment (Cambridge Face Memory Test) misses 50–65% of individuals who believe that they have this condition. This results in such excluded cases’ absence from scientific knowledge, effect sizes of impairment potentially overestimated, treatment efficacy underrated, and may elicit in them a negative experience of research. To estimate their symptomology and group-level impairments in face processing, we recruited a large cohort who believes that they have prosopagnosia. Matching prior reports, 56% did not meet criteria on the Cambridge Face Memory Test. However, the severity of their prosopagnosia symptoms and holistic perception deficits were comparable to those who did meet criteria. Excluded cases also exhibited face perception and memory impairments that were roughly one standard deviation below neurotypical norms, indicating the presence of objective problems. As the prosopagnosia index correctly classified virtually every case, we propose it should be the primary method for providing a diagnosis, prior to subty

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Author

Edwin J. Burns; Elizabeth Gaunt; Betiel Kidane; Lucy Hunter; Jaylea Pulford

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Psychology (Social Sciences)