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During my young adulthood, I spotted my grandmother through the glass of a café. I felt dumbstruck – she had died the previous year. I gazed for a moment, then recalled it was impossible to be her.

I'd encountered similar occurrences during my life. Periodically, I "identified" someone I didn't know. Sometimes I could promptly determine who the unknown individual resembled – like my grandmother. Other times, a visage simply had a indistinct knowingness I couldn't place.

Examining the Range of Person Recognition Abilities

Recently, I began questioning if others have these unusual encounters. When I questioned my companions, one said she often sees persons in unexpected places who look recognizable. Others sometimes confuse a unknown person or public figure for someone they know in everyday existence. But some mentioned nothing of the kind – they could easily distinguish people they'd met and people they hadn't.

I felt curious by this spectrum of perceptions. Was it just longing that made me see my grandma that day – or some kind of brain malfunction? Scientific investigation has found we spend about a quarter-hour of every hour looking at faces – do we just have inaccuracies sometimes? I was commencing to comprehend that we can all see the same face but not interpret the same thing.

Comprehending the Continuum of Facial Recognition Skills

Investigators have designed many tests to quantify the ability to recall faces. There exists a wide range: at one end are superior face rememberers, who recognize faces they have seen only for a short time or a considerable time past; at the other are people with facial agnosia, who often have difficulty to know family, intimate companions and even themselves.

Some assessments also capture how good someone is at telling if they have not seen a face before. This is where I believe I fall short. But experts "haven't extensively researched this" as much as they've studied the capacity to recall a face, according to neuroscience experts. It does seem that the two skills use distinct brain functions; for example, there is proof that superior face rememberers and prosopagnosics do about as well as each other at recognizing new faces, despite their vastly dissimilar abilities to remember old faces.

Taking Face Identification Evaluations

I felt interested whether these tests would offer understanding on why unfamiliar individuals look recognizable. Was I someone who always remembers a face? I often remember people more than they remember me, and feel disappointed – a feeling that scientists say is common for superior face rememberers. But maybe I hyper-recognize faces – to the extent that even some new faces look known.

I received several face identification tests. I worked through them, feeling puzzled at times. In one, called the memory for faces evaluation, I had to look at black-and-white photos of a face from multiple perspectives, then find it in lineups. During another test that directed me to pick out public figures from a mix of photos, many of the faces felt at least known, but I couldn't precisely recognize them – comparable to my real-life experience.

I felt less than confident about my outcome. But after analysis of my results, I had properly distinguished 96% of the celebrity faces. The finding was that I qualified as a "almost superior face rememberer".

Grasping Mistaken Recognition Percentages

I also did exceptionally in the known/unknown countenances task, which was described as particularly good for assessing someone's memory for faces. The participant looks at a series of 60 black-and-white photos, each of a distinct face. Then they look through a series of 120 comparable photos – the initial collection plus 60 new faces – and identify which were in the initial group. The super-recognizer benchmark is roughly 80%; I recognized 78% of the faces I'd seen. On the other side of the spectrum, people with prosopagnosia correctly guess an average of 57%.

I felt content with my performance, but also surprised. I recalled many of the previously seen countenances, but seldom mistook a unknown visage for one that I'd seen before. My performance on this metric, called the mistaken recognition percentage, was 18%. Average identifiers, superior face rememberers and those with facial agnosia all have a incorrect identification frequency of about 30% on average. So why was I confusing a unfamiliar individual's face for my grandmother's?

Investigating Possible Explanations

It was theorized that I likely possessed some exceptional facial identifier abilities. Everyone has a database of the faces we know in our recall, but super-recognizers – and likely near-exceptional individuals like me – have a comparatively extensive and detailed catalogue. We're also likely to differentiate visages – that is, attribute traits to each face, such as amiability or rudeness. Studies suggests that the latter helps people to acquire and retain faces to permanent recall. While differentiating may help me recognize people, it may also deceive me into seeing my grandmother in a woman who has a similar air.

In moreover, it was considered I might be "a attentive countenance examiner", meaning I pay a lot of attention to faces. Others may have more false alarm moments, thinking they identify someone they don't know. But because I tend to look closely at faces, I am inclined to notice the unknown person who resembles my grandma. Indeed, one companion who said she doesn't make person recognition mistakes admitted she doesn't really look at the people around her.

Researching Excessive Recognition for Faces

These assessments helped me understand where I sat on the spectrum. But I wanted to understand more about what is happening in the brain when we "identify" strangers. Investigating further, I read about a syndrome called hyperfamiliarity for faces (HFF), in which unknown faces appear recognizable. On the surface, this sounded like it could relate to me. But the few of reported cases all happened after a medical episode such as a convulsion or stroke, unlike the idiosyncrasy that I've been observing my whole mature years.

Through research sites, experts have heard from about 24,000 face-blind individuals, as well as people with all kinds of person recognition difficulties, including perceptual alterations, like when faces appear to be melting. Researchers study many of these people, using methods like the old/new faces task and the facial recall assessment.

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

"The frequency is quite low," one expert said of HFF. However, they speculated that there may be a range, with some people who think each countenance is familiar, and others, like me, who only undergo it a few times a month.

{Understanding