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During my mid-20s, I spotted my grandmother through the pane of a coffee shop. I felt stunned – she had died the year before. I stared for a short time, then recalled it was impossible to be her.

I'd experienced comparable situations during my life. Occasionally, I "recognized" a person I didn't know. At times I could promptly identify who the stranger looked like – for instance my grandmother. Other times, a face simply had a indistinct knowingness I couldn't identify.

Exploring the Range of Face Identification Capabilities

In recent times, I started wondering if different individuals have these peculiar situations. When I inquired my companions, one said she frequently sees individuals in unpredictable places who look recognizable. Others at times confuse a stranger or public figure for someone they know in actual life. But some mentioned nothing of the kind – they could effortlessly distinguish people they'd met and people they hadn't.

I felt fascinated by this spectrum of perceptions. Was it just longing that made me see my elderly relative that day – or some kind of cognitive error? Research has found we spend about approximately 900 seconds of every hour looking at faces – do we just make mistakes sometimes? I was commencing to comprehend that we can all see the same face but not experience the same thing.

Understanding the Spectrum of Face Identification Abilities

Investigators have created many evaluations to measure the capacity to recall faces. There exists a extensive variety: at one side are superior face rememberers, who recognize faces they have seen only for a short time or a distant past; at the other are people with facial agnosia, who often have difficulty to recognize family, close friends and even themselves.

Some tests also capture how skilled someone is at determining if they have not seen a face before. This is where I believe I have limitations. But researchers "haven't thoroughly investigated this" as much as they've studied the capacity to recognize a face, according to neuroscience experts. It does seem that the two skills use different brain processes; for case, there is evidence that super-recognizers and those with facial agnosia do about as well as each other at identifying new faces, despite their wildly different abilities to recall old faces.

Completing Person Recognition Assessments

I felt intrigued whether these assessments would provide insight on why unknown people look recognizable. Was I someone who always remembers a face? I often remember people more than they recognize me, and feel disappointed – a emotion that experts say is common for super-recognizers. But maybe I hyper-recognize faces – to the degree that even some new faces look known.

I received several facial recognition tests. I completed them, feeling confused at times. In one, called the facial recall assessment, I had to look at grayscale photos of a face from different viewpoints, then find it in arrays. During another test that directed me to pick out celebrities from a mix of photos, many of the faces felt at least recognizable, but I couldn't precisely recognize them – similar to my everyday experience.

I felt doubtful about my results. But after assessment of my scores, I had accurately recognized 96% of the celebrity faces. The determination was that I qualified as a "near-exceptional facial identifier".

Grasping False Alarm Rates

I also excelled in the old/new faces task, which was described as especially effective for measuring someone's memory for faces. The participant looks at a collection of 60 monochrome photos, each of a separate face. Then they examine a sequence of 120 similar photos – the initial collection plus 60 new faces – and specify which were in the original collection. The superior face rememberer threshold is roughly 80%; I recognized 78% of the faces I'd seen. On the other end of the spectrum, people with prosopagnosia properly recognize an average of 57%.

I felt pleased with my performance, but also astonished. I remembered many of the familiar visages, but seldom confused a new face for one that I'd seen before. My performance on this metric, called the incorrect identification frequency, was 18%. Typical rememberers, exceptional facial identifiers and prosopagnosics all have a incorrect identification frequency of about 30% on average. So why was I mistaking a stranger's face for my grandmother's?

Investigating Possible Causes

It was theorized that I possibly possessed some superior face rememberer capabilities. Everyone has a catalogue of the faces we know in our memory, but super-recognizers – and probably borderline straddlers like me – have a comparatively extensive and detailed catalogue. We're also likely to distinguish countenances – that is, attribute traits to each face, such as friendliness or discourtesy. Scientific investigation suggests that the latter helps people to develop and store faces to permanent recall. While distinguishing may help me remember people, it may also deceive me into seeing my grandma in a woman who has a analogous presence.

In moreover, it was believed I might be "a attentive countenance examiner", meaning I pay a lot of attention to faces. Others may have more mistaken recognition moments, thinking they recognize someone they don't know. But because I tend to look closely at faces, I am inclined to notice the stranger who resembles my grandmother. Indeed, one friend who said she doesn't make person recognition mistakes confessed she doesn't really look at the people around her.

Investigating Hyperfamiliarity for Faces

These assessments helped me understand where I stood on the spectrum. But I wanted to understand more about what is happening in the brain when we "know" unfamiliar individuals. Researching further, I read about a syndrome called excessive facial recognition (HFF), in which unrecognized faces appear known. On the surface, this sounded like it could apply to me. But the handful of documented instances all took place after a physical event such as a convulsion or stroke, unlike the peculiarity that I've been experiencing my whole mature years.

Through scientific platforms, experts have heard from about 24,000 those with facial agnosia, as well as people with all kinds of facial recognition problems, including visual distortions, like when faces appear to be melting. Researchers study many of these people, using tools like the old/new faces task and the Cambridge Face Memory Test.

Experts have heard from only a small number of people with suspected HFF in long durations of research.

"The frequency is quite low," one expert said of HFF. However, they theorized that there may be a continuum, with some people who think every face is recognizable, and others, like me, who only encounter it a few times a month.

{Understanding