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Prosopagnosia

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

Visual Agnosia

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...

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Related Experiment Video

Updated: Jun 7, 2026

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome

Published on: July 31, 2016

Developmental prosopagnosia: A case analysis and treatment study.

Ruth Brunsdon¹, Max Coltheart, Lyndsey Nickels

¹Developmental Cognitive Neuropsychology Research Unit and Rehabilitation Department, Children's Hospital at Westmead, Sydney, New South Wales, Australia.

Cognitive Neuropsychology

|November 5, 2010

Summary

This case study details a successful treatment for an 8-year-old child with prosopagnosia, improving face perception and familiar face recognition through targeted training.

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Area of Science:

Neuroscience
Developmental Psychology
Cognitive Science

Background:

Prosopagnosia, or face blindness, involves severe deficits in recognizing familiar faces.
This case involves an 8-year-old child (AL) with structural encoding deficits impacting basic face perception.
Impaired face perception affected both familiar and unfamiliar face processing, with specific issues in eye and nose perception.

Purpose of the Study:

To report on a treatment case study for an 8-year-old child with prosopagnosia.
To investigate the effectiveness of a targeted intervention for face perception impairments.
To assess improvements in face naming and reliance on non-facial cues.

Main Methods:

A detailed assessment of AL's face perception abilities, including feature processing.
Implementation of a treatment program focused on perception and analysis of facial features.
Training in familiar face naming and reducing reliance on non-facial cues.

Main Results:

AL achieved excellent face naming for familiar individuals.
A decreased reliance on non-facial cues was observed post-treatment.
AL showed a reduced tendency to misidentify unfamiliar faces as family members.

Conclusions:

Targeted treatment can significantly improve face perception and recognition in children with prosopagnosia.
Interventions can enhance structural encoding and feature analysis for faces.
Successful rehabilitation can lead to better social interaction and identification abilities.