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Throughout my mid-20s, I observed my elderly relative through the pane of a coffee house. I felt dumbstruck – she had passed away the previous year. I stared for a short time, then remembered it was impossible to be her.

I'd had comparable experiences during my life. From time to time, I "knew" an individual I didn't know. At times I could promptly pinpoint who the unknown individual looked like – such as my elderly relative. Other times, a face simply had a indistinct knowingness I couldn't place.

Exploring the Range of Face Identification Experiences

In recent times, I began questioning if others have these unusual situations. When I inquired my friends, one mentioned she frequently sees persons in unexpected places who look familiar. Others sometimes mistake a unknown person or public figure for someone they know in real life. But some mentioned no such experiences – they could effortlessly recognize people they'd met and people they hadn't.

I felt curious by this spectrum of experiences. Was it just desire 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 beginning to realize that we can all see the same face but not perceive the same thing.

Comprehending the Spectrum of Facial Recognition Capacities

Investigators have designed many tests to quantify the capacity to remember faces. There exists a extensive variety: at one side are exceptional facial identifiers, who recall faces they have seen only for a short time or a distant past; at the other are people with facial agnosia, who often struggle to identify relatives, dear acquaintances and even themselves.

Some assessments also measure how proficient someone is at telling if they have not seen a face before. This is where I believe I have limitations. But experts "haven't thoroughly investigated this" as much as they've looked at the ability to remember a face, according to brain researchers. It does seem that the two capabilities use distinct brain processes; for example, there is indication that super-recognizers and prosopagnosics do about as well as each other at recognizing new faces, despite their wildly different abilities to remember old faces.

Undergoing Person Recognition Assessments

I felt interested whether these tests would offer understanding on why unfamiliar individuals look recognizable. Was I someone who never forgets a face? I often recognize people more than they recall me, and feel disheartened – a emotion that scientists say is frequent for superior face rememberers. But maybe I hyper-recognize faces – to the extent that even some new faces look known.

I was sent several face identification tests. I worked through them, feeling stumped at times. In one, called the facial recall assessment, I had to look at grayscale photos of a face from multiple perspectives, then find it in groups. During another test that instructed me to pick out public figures from a mix of photos, many of the faces felt at least recognizable, but I couldn't exactly identify them – comparable to my actual experience.

I felt doubtful about my performance. But after assessment of my performance, I had properly distinguished 96% of the public figure faces. The determination was that I qualified as a "borderline super-recognizer".

Grasping Mistaken Recognition Frequencies

I also did exceptionally in the previously seen/unfamiliar faces task, which was described as notably useful for assessing someone's memory for faces. The test-taker looks at a collection of 60 black-and-white photos, each of a distinct face. Then they examine a series of 120 comparable photos – the first group plus 60 unfamiliar countenances – and identify which were in the original collection. The super-recognizer cutoff is roughly 80%; I recalled 78% of the faces I'd seen. On the other side of the continuum, people with facial agnosia accurately identify an average of 57%.

I felt content with my score, but also taken aback. I recalled many of the previously seen countenances, but rarely mistook a new face for one that I'd seen before. My performance on this metric, called the false alarm rate, was 18%. Average identifiers, exceptional facial identifiers and those with facial agnosia 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?

Exploring Potential Causes

It was suggested that I likely possessed some exceptional facial identifier capacities. Everyone has a catalogue of the faces we know in our recollection, but super-recognizers – and likely borderline straddlers like me – have a relatively large and high-resolution catalogue. We're also possibly to differentiate visages – that is, attribute qualities to each face, such as friendliness or discourtesy. Scientific investigation suggests that the later element helps people to develop and store faces to long-term memory. While differentiating may help me remember people, it may also trick me into seeing my elderly relative in a woman who has a analogous presence.

In furthermore, it was believed I might be "an active face perceiver", meaning I pay a significant focus to faces. Others may have more mistaken recognition moments, thinking they recognize someone they don't know. But because I tend to look carefully at faces, I am disposed to notice the stranger who looks like my elderly relative. Indeed, one acquaintance who said she doesn't make face identification mistakes confessed she doesn't really look at the people around her.

Investigating Excessive Recognition for Faces

These assessments helped me understand where I positioned on the spectrum. But I wanted to understand more about what is happening in the brain when we "identify" unknown people. Examining further, I read about a disorder called excessive facial recognition (HFF), in which unfamiliar faces appear recognizable. On the surface, this sounded like it could pertain to me. But the handful of reported cases all took place after a physical event such as a seizure or stroke, unlike the idiosyncrasy that I've been noticing my whole grown-up existence.

Through research sites, experts have heard from about 24,000 those with facial agnosia, as well as people with all kinds of face identification challenges, including visual distortions, 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 handful of people with potential HFF in extended periods of investigation.

"The prevalence is quite low," one expert said of HFF. However, they speculated that there may be a spectrum, with some people who think all visages is familiar, and others, like me, who only encounter it a several occasions a month.

{Understanding