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During my twenties, I observed my elderly relative through the window of a coffee shop. I felt dumbstruck – she had passed away the previous year. I gazed for a brief period, then reminded myself it couldn't be her.

I'd encountered comparable occurrences during my life. Periodically, I "knew" someone I had never met. At times I could promptly pinpoint who the unknown individual reminded me of – like my grandmother. Other times, a countenance simply had a indistinct knowingness I couldn't place.

Exploring the Range of Face Identification Experiences

In recent times, I became curious if different individuals have these peculiar situations. When I asked my companions, one mentioned she often sees persons in random places who look recognizable. Others sometimes confuse a stranger or celebrity for someone they know in everyday existence. But some reported no such experiences – they could readily distinguish people they'd met and people they hadn't.

I felt curious by this diversity of responses. 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 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 perceive the same thing.

Understanding the Range of Face Identification Abilities

Investigators have designed many evaluations to quantify the skill to remember faces. There exists a extensive variety: at one extreme are exceptional facial identifiers, who recall faces they have seen only for a short time or a considerable time past; at the other are people with prosopagnosia, who often have difficulty to recognize family, dear acquaintances and even themselves.

Some evaluations also assess how good someone is at recognizing if they have not seen a face before. This is where I believe I fall short. But scientists "just haven't dug into 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 mechanisms; for example, there is evidence that super-recognizers and prosopagnosics do about as well as each other at identifying new faces, despite their extremely distinct abilities to recall old faces.

Taking Facial Recognition Evaluations

I felt intrigued whether these assessments would shed some light on why strangers look recognizable. Was I someone who constantly recalls a face? I often remember people more than they recall me, and feel disheartened – a feeling that scientists say is frequent for superior face rememberers. But maybe I hyper-recognize faces – to the degree that even some new faces look recognizable.

I received several facial recognition tests. I waded through them, feeling stumped at times. In one, called the facial recall assessment, I had to look at black-and-white photos of a face from three angles, then find it in lineups. During another test that instructed 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 uncertain about my results. But after analysis of my results, I had properly distinguished 96% of the celebrity faces. The conclusion was that I qualified as a "borderline super-recognizer".

Understanding Incorrect Identification Frequencies

I also excelled in the old/new faces task, which was described as especially effective for measuring someone's recall for faces. The subject looks at a sequence of 60 black-and-white photos, each of a distinct face. Then they examine a string of 120 comparable photos – the first group plus 60 unknown visages – and identify which were in the initial group. The super-recognizer cutoff is roughly 80%; I recalled 78% of the faces I'd seen. On the other end of the continuum, people with face blindness accurately identify an average of 57%.

I felt satisfied with my performance, but also taken aback. I recognized many of the old faces, but infrequently confused a unfamiliar countenance for one that I'd seen before. My result on this indicator, called the incorrect identification frequency, was 18%. Normal recognizers, superior face rememberers and those with facial agnosia all have a incorrect identification frequency of about 30% on average. So why was I mistaking a unknown person's face for my grandma's?

Exploring Possible Explanations

It was proposed that I possibly possessed some super-recognizer abilities. Everyone has a database of the faces we know in our recollection, but super-recognizers – and likely borderline straddlers like me – have a comparatively extensive and high-resolution catalogue. We're also possibly to distinguish countenances – that is, assign characteristics to each face, such as approachability or discourtesy. Scientific investigation suggests that the latter helps people to learn and retain faces to enduring recollection. While individuating may help me recognize people, it may also deceive me into seeing my grandma in a woman who has a analogous presence.

In addition, it was thought I might be "an active face perceiver", meaning I pay a significant focus to faces. Others may have more incorrect identification moments, thinking they recognize someone they don't know. But because I tend to look closely at faces, I am disposed to notice the unfamiliar individual who similar to my elderly relative. Indeed, one acquaintance who said she doesn't make person recognition mistakes acknowledged she doesn't really look at the people around her.

Investigating Hyperfamiliarity for Faces

These tests helped me understand where I stood on the spectrum. But I wanted to understand more about what is happening in the brain when we "recognize" unfamiliar individuals. Researching further, I read about a disorder called hyperfamiliarity for faces (HFF), in which unfamiliar faces appear familiar. Superficially, this sounded like it could pertain to me. But the few of recorded occurrences all took place after a health incident such as a convulsion or stroke, unlike the quirk that I've been noticing my whole grown-up existence.

Through scientific platforms, experts have heard from about 24,000 prosopagnosics, as well as people with all kinds of facial recognition challenges, including sight abnormalities, like when faces appear to be liquefying. Researchers study many of these people, using methods like the known/unknown countenances task and the memory for faces evaluation.

Experts have heard from only a small number of people with potential HFF in extended periods of investigation.

"The frequency is quite low," one expert said of HFF. However, they speculated that there may be a spectrum, with some people who think every face is known, and others, like me, who only experience it a multiple instances a month.

{Understanding