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Throughout my mid-20s, I noticed my elderly relative through the glass of a coffee shop. I felt astonished – she had departed the year before. I gazed for a short time, then reminded myself it was impossible to be her.

I'd had comparable situations throughout my life. Occasionally, I "recognized" a person I had never met. At times I could promptly determine who the unknown individual resembled – like my elderly relative. On other occasions, a face simply had a subtle recognition I couldn't identify.

Exploring the Spectrum of Facial Recognition Experiences

Lately, I began questioning if different individuals have these unusual experiences. When I inquired my friends, one said she frequently sees persons in unpredictable places who look known. Others sometimes confuse a stranger or celebrity for someone they know in actual life. But some reported no such experiences – they could readily distinguish people they'd met and people they hadn't.

I felt intrigued by this range of responses. Was it just desire that made me see my grandmother that day – or some kind of brain malfunction? Studies 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.

Comprehending the Spectrum of Face Identification Abilities

Investigators have developed many tests to measure the capacity to recall faces. There exists a extensive variety: at one extreme are super-recognizers, who remember faces they have seen only briefly or a distant past; at the other are people with facial agnosia, who often struggle to recognize family, close friends and even themselves.

Some tests also assess how good someone is at telling if they have not seen a face before. This is where I suspect I fall short. But scientists "haven't thoroughly investigated this" as much as they've looked at the capacity to remember a face, according to cognitive neuroscientists. It does seem that the two capabilities use different brain functions; for case, there is proof that exceptional facial identifiers and face-blind individuals do about as well as each other at identifying new faces, despite their extremely distinct abilities to recognize old faces.

Undergoing Face Identification Tests

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

I was sent several person recognition tests. I waded through them, feeling stumped at times. In one, called the Cambridge Face Memory Test, I had to look at monochrome photos of a face from multiple perspectives, then find it in lineups. During another test that told me to pick out famous people from a mix of photos, many of the faces felt at least recognizable, but I couldn't precisely recognize them – similar to my real-life experience.

I felt uncertain about my results. But after assessment of my performance, I had correctly identified 96% of the celebrity faces. The conclusion 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 notably useful for evaluating someone's recognition for faces. The test-taker looks at a sequence of 60 grayscale photos, each of a different face. Then they look through a sequence of 120 comparable photos – the first group plus 60 new faces – and identify which were in the initial group. The exceptional facial identifier cutoff is roughly 80%; I recalled 78% of the faces I'd seen. On the other end of the spectrum, people with prosopagnosia accurately identify an average of 57%.

I felt satisfied with my performance, but also astonished. I recalled many of the old faces, but rarely misidentified a new face for one that I'd seen before. My score on this indicator, called the mistaken recognition percentage, was 18%. Typical rememberers, super-recognizers 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 Reasons

It was suggested that I probably possessed some superior face rememberer abilities. Everyone has a database of the faces we know in our memory, but exceptional facial identifiers – and possibly near-exceptional individuals like me – have a fairly substantial and detailed catalogue. We're also probably to distinguish countenances – that is, attribute characteristics to each face, such as amiability or discourtesy. Studies suggests that the later element helps people to learn and retain faces to long-term memory. While individuating may help me remember people, it may also mislead me into seeing my grandmother in a woman who has a similar air.

In moreover, it was thought I might be "an active face perceiver", meaning I pay a lot of attention 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 prone to notice the stranger who looks like my elderly relative. Indeed, one companion who said she doesn't make facial recognition mistakes admitted she doesn't really look at the people around her.

Examining Over-familiarity for Faces

These assessments helped me understand where I stood on the continuum. But I wanted to understand more about what is happening in the brain when we "know" unknown people. Examining further, I read about a condition called over-familiarity with countenances (HFF), in which unrecognized faces appear recognizable. On the surface, this sounded like it could apply to me. But the small number of documented instances all happened after a health incident such as a epileptic episode or brain attack, unlike the idiosyncrasy that I've been noticing my whole adult life.

Through scientific platforms, experts have heard from about 24,000 those with facial agnosia, as well as people with all kinds of face identification difficulties, including visual distortions, like when faces appear to be liquefying. Researchers study many of these people, using methods like the previously seen/unfamiliar 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 spectrum, with some people who think each countenance is familiar, and others, like me, who only encounter it a multiple instances a month.

{Understanding