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In my mid-20s, I spotted my grandma through the window of a coffee house. I felt astonished – she had departed the prior year. I gazed for a moment, then recalled it couldn't possibly be her.

I'd encountered comparable situations throughout my life. Occasionally, I "knew" a person I was unacquainted with. At times I could promptly identify who the unfamiliar person reminded me of – like my grandmother. Other times, a face simply had a indistinct knowingness I couldn't place.

Examining the Variety of Face Identification Experiences

In recent times, I began questioning if others have these unusual situations. When I inquired my acquaintances, one said she regularly sees people in random places who look familiar. Others sometimes confuse a unknown person or famous person for someone they know in real life. But some mentioned nothing of the kind – they could effortlessly identify people they'd met and people they hadn't.

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

Understanding the Range of Person Recognition Skills

Scientists have designed many assessments to measure the capacity to recall faces. There exists a broad spectrum: at one end are super-recognizers, who recall faces they have seen only briefly or a long time ago; at the other are people with face blindness, who often find it challenging to know kin, intimate companions and even themselves.

Some evaluations also capture how proficient someone is at telling if they have not seen a face before. This is where I believe I have limitations. But researchers "haven't extensively researched this" as much as they've studied the skill to recognize a face, according to neuroscience experts. It does seem that the two abilities use different brain functions; for instance, there is indication that superior face rememberers and those with facial agnosia do about as well as each other at identifying new faces, despite their extremely distinct abilities to remember old faces.

Taking Facial Recognition Tests

I felt intrigued whether these tests would shed some light on why unfamiliar individuals look recognizable. Was I someone who constantly recalls a face? I often remember people more than they recall me, and feel disappointed – a feeling that scientists say is common for super-recognizers. But maybe I over-recognize faces – to the degree that even some new faces look known.

I obtained several person recognition tests. I completed 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 arrays. During another test that directed me to pick out public figures from a mix of photos, many of the faces felt at least familiar, but I couldn't precisely recognize them – reminiscent to my real-life experience.

I felt less than confident about my outcome. But after assessment of my scores, I had accurately recognized 96% of the celebrity faces. The finding was that I qualified as a "almost superior face rememberer".

Comprehending Mistaken Recognition Percentages

I also performed well in the known/unknown countenances task, which was described as notably useful for evaluating someone's recognition for faces. The participant looks at a series of 60 grayscale photos, each of a different face. Then they look through a sequence of 120 comparable photos – the first group plus 60 unfamiliar countenances – and indicate which were in the first set. The super-recognizer benchmark is roughly 80%; I recalled 78% of the faces I'd seen. On the other end of the spectrum, people with facial agnosia correctly guess an average of 57%.

I felt pleased with my performance, but also surprised. I remembered many of the familiar visages, but rarely confused a new face for one that I'd seen before. My performance on this indicator, called the incorrect identification frequency, was 18%. Typical rememberers, superior face rememberers and face-blind individuals all have a false alarm rate of about 30% on average. So why was I confusing a unfamiliar individual's face for my elderly relative's?

Investigating Potential Causes

It was suggested that I likely possessed some exceptional facial identifier capabilities. Everyone has a database of the faces we know in our recollection, but super-recognizers – and probably near-exceptional individuals like me – have a comparatively extensive and high-resolution catalogue. We're also possibly to differentiate visages – that is, assign qualities to each face, such as friendliness or discourtesy. Studies suggests that the later element helps people to develop and retain faces to permanent recall. While distinguishing may help me recognize people, it may also mislead me into seeing my elderly relative in a woman who has a comparable demeanor.

In moreover, it was considered I might be "an active face perceiver", meaning I pay a significant focus to faces. Others may have more incorrect identification moments, thinking they identify someone they don't know. But because I tend to look closely at faces, I am disposed to notice the stranger who resembles my grandma. Indeed, one friend who said she doesn't make face identification mistakes confessed she doesn't really look at the people around her.

Researching Hyperfamiliarity for Faces

These tests helped me understand where I positioned on the range. But I wanted to understand more about what is happening in the brain when we "identify" strangers. Examining further, I read about a syndrome called excessive facial recognition (HFF), in which unrecognized faces appear familiar. Superficially, this sounded like it could apply to me. But the small number of recorded occurrences all happened after a health incident such as a epileptic episode or stroke, unlike the quirk that I've been observing my whole adult life.

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 sight abnormalities, like when faces appear to be melting. 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 handful of people with possible HFF in extended periods of investigation.

"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 familiar, and others, like me, who only undergo it a multiple instances a month.

{Understanding