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Throughout my young adulthood, I noticed my grandmother through the glass of a coffee shop. I felt dumbstruck – she had passed away the year before. I gazed for a brief period, then reminded myself it was impossible to be her.

I'd had analogous experiences all through my life. Periodically, I "knew" an individual I was unacquainted with. Sometimes I could rapidly determine who the unknown individual reminded me of – such as my grandma. In other instances, a visage simply had a subtle recognition I couldn't identify.

Investigating the Range of Person Recognition Abilities

In recent times, I began questioning if other people have these peculiar situations. When I inquired my friends, one said she frequently sees people in unpredictable places who look familiar. Others occasionally confuse a unfamiliar individual or famous person for someone they know in actual life. But some reported completely different responses – they could effortlessly distinguish people they'd met and people they hadn't.

I felt fascinated by this range of perceptions. Was it just desire that made me see my grandma that day – or some kind of mental glitch? Scientific investigation has found we spend about 14 minutes 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 perceive the same thing.

Comprehending the Spectrum of Face Identification Capacities

Scientists have designed many tests to quantify the capacity to recall faces. There exists a broad spectrum: at one extreme are super-recognizers, who remember faces they have seen only momentarily or a distant past; at the other are people with prosopagnosia, who often struggle to identify relatives, close friends and even themselves.

Some evaluations also measure how good someone is at telling if they have not seen a face before. This is where I suspect I am deficient. But scientists "haven't thoroughly investigated this" as much as they've looked at the skill to remember a face, according to neuroscience experts. It does seem that the two abilities use different brain functions; for case, there is proof that super-recognizers and face-blind individuals do about as well as each other at discerning new faces, despite their wildly different abilities to remember old faces.

Taking Face Identification Assessments

I felt interested whether these tests would offer understanding on why unknown people look recognizable. Was I someone who always remembers a face? I often recognize people more than they recall me, and feel let down – a sentiment that experts say is frequent for super-recognizers. But maybe I over-recognize faces – to the extent that even some new faces look known.

I received several facial recognition tests. I waded through them, feeling confused at times. In one, called the memory for faces evaluation, I had to look at black-and-white photos of a face from different viewpoints, then find it in lineups. During another test that directed me to pick out celebrities from a mix of photos, many of the faces felt at least familiar, but I couldn't exactly identify them – comparable to my actual experience.

I felt doubtful about my outcome. But after analysis of my scores, I had accurately recognized 96% of the celebrity faces. The conclusion was that I qualified as a "borderline super-recognizer".

Grasping Incorrect Identification Percentages

I also performed well in the old/new faces task, which was described as especially effective for evaluating someone's memory for faces. The test-taker looks at a sequence of 60 black-and-white photos, each of a separate face. Then they review a string of 120 analogous photos – the first group plus 60 unknown visages – and specify which were in the initial group. The exceptional facial identifier cutoff is roughly 80%; I remembered 78% of the faces I'd seen. On the other extreme of the continuum, people with prosopagnosia correctly guess an average of 57%.

I felt satisfied with my result, but also surprised. I recognized many of the familiar visages, but infrequently mistook a new face for one that I'd seen before. My result on this measure, called the mistaken recognition percentage, was 18%. Normal recognizers, super-recognizers and prosopagnosics all have a incorrect identification frequency of about 30% on average. So why was I misidentifying a unfamiliar individual's face for my grandma's?

Investigating Plausible Explanations

It was proposed that I possibly possessed some exceptional facial identifier abilities. Everyone has a catalogue of the faces we know in our recall, but exceptional facial identifiers – and likely borderline straddlers like me – have a relatively large and detailed catalogue. We're also possibly to differentiate visages – that is, assign traits to each face, such as friendliness or discourtesy. Studies suggests that the latter helps people to develop and retain faces to permanent recall. While individuating may help me recognize people, it may also deceive me into seeing my elderly relative in a woman who has a analogous presence.

In addition, it was thought I might be "an engaged facial observer", meaning I pay a considerable notice to faces. Others may have more mistaken recognition moments, thinking they know someone they don't know. But because I tend to look carefully at faces, I am disposed to notice the unfamiliar individual who similar to my grandma. Indeed, one acquaintance who said she doesn't make facial recognition mistakes admitted she doesn't really look at the people around her.

Investigating Hyperfamiliarity for Faces

These evaluations helped me understand where I positioned on the spectrum. But I wanted to understand more about what is happening in the brain when we "recognize" unknown people. 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 relate to me. But the few of recorded occurrences all happened after a medical episode such as a convulsion or brain attack, unlike the quirk that I've been experiencing my whole adult life.

Through scientific platforms, experts have heard from about 24,000 prosopagnosics, as well as people with all kinds of facial recognition difficulties, including perceptual alterations, like when faces appear to be liquefying. Researchers study many of these people, using tools like the known/unknown countenances task and the facial recall assessment.

Experts have heard from only a few of people with suspected HFF in long durations of investigation.

"The prevalence is quite low," one expert said of HFF. However, they speculated that there may be a continuum, with some people who think each countenance is familiar, and others, like me, who only experience it a multiple instances a month.

{Understanding