Can you imagine not being able to recognize those you know if they wore glasses, changed their hairstyle, or perhaps put on a hat? Prosopagnosia is a severe facial recognition disorder that is thought to impact around two per cent of the population. Frequently found in children on the autism spectrum, those with the condition have difficulties distinguishing between one face and the next, meaning that they may not recognize even those who are closest to them. Nancy L. Mindick provides...