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In my young adulthood, I observed my grandma through the pane of a coffee house. I felt dumbstruck – she had passed away the year before. I stared for a moment, then remembered it couldn't be her.

I'd experienced comparable experiences all through my life. Periodically, I "recognized" an individual I had never met. At times I could promptly determine who the unknown individual reminded me of – like my elderly relative. On other occasions, a visage simply had a subtle recognition I couldn't identify.

Examining the Variety of Facial Recognition Experiences

Lately, I started wondering if others have these unusual encounters. When I questioned my friends, one mentioned she frequently sees individuals in unexpected places who look known. Others sometimes mistake a stranger or famous person for someone they know in everyday existence. But some reported completely different responses – they could easily identify people they'd met and people they hadn't.

I felt curious by this range of perceptions. Was it just desire that made me see my grandma that day – or some kind of mental glitch? Studies has found we spend about a quarter-hour 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.

Grasping the Continuum of Face Identification Skills

Researchers have created many assessments to assess the capacity to recognize faces. There exists a extensive variety: at one side are super-recognizers, who recognize faces they have seen only for a short time or a distant past; at the other are people with face blindness, who often find it challenging to recognize kin, intimate companions and even themselves.

Some assessments also assess how good someone is at determining if they have not seen a face before. This is where I think I have limitations. But experts "haven't extensively researched this" as much as they've studied the ability to recall a face, according to brain researchers. It does seem that the two capabilities use distinct brain mechanisms; for example, there is evidence that super-recognizers and face-blind individuals do about as well as each other at discerning new faces, despite their extremely distinct abilities to remember old faces.

Completing Person Recognition Evaluations

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

I received several face identification tests. I completed them, feeling puzzled at times. In one, called the Cambridge Face Memory Test, 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 precisely recognize them – similar to my real-life experience.

I felt doubtful about my results. But after assessment of my scores, I had accurately recognized 96% of the famous person faces. The conclusion was that I qualified as a "near-exceptional facial identifier".

Comprehending Mistaken Recognition Rates

I also did exceptionally in the previously seen/unfamiliar faces task, which was described as particularly good for assessing someone's memory for faces. The test-taker looks at a collection of 60 monochrome photos, each of a separate face. Then they examine a sequence of 120 similar 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 recognized 78% of the faces I'd seen. On the other end of the range, people with face blindness accurately identify an average of 57%.

I felt satisfied with my performance, but also surprised. I recalled many of the familiar visages, but infrequently misidentified a new face for one that I'd seen before. My score on this indicator, called the incorrect identification frequency, was 18%. Normal recognizers, super-recognizers and face-blind individuals all have a false alarm rate of about 30% on average. So why was I misidentifying a unknown person's face for my grandmother's?

Examining Potential Causes

It was proposed that I likely possessed some exceptional facial identifier capabilities. Everyone has a inventory of the faces we know in our recollection, but superior face rememberers – and probably almost superior rememberers 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 amiability or impoliteness. Studies suggests that the later element helps people to learn and store faces to enduring recollection. While distinguishing may help me recall people, it may also trick me into seeing my grandma in a woman who has a analogous presence.

In addition, it was thought I might be "a attentive countenance examiner", meaning I pay a considerable notice to faces. Others may have more mistaken recognition moments, thinking they identify someone they don't know. But because I tend to look carefully at faces, I am disposed to notice the unknown person who similar to my elderly relative. Indeed, one friend who said she doesn't make face identification mistakes acknowledged she doesn't really look at the people around her.

Examining Excessive Recognition for Faces

These tests helped me understand where I positioned on the continuum. But I wanted to understand more about what is happening in the brain when we "know" unknown people. Investigating further, I read about a disorder called excessive facial recognition (HFF), in which unfamiliar faces appear recognizable. Superficially, this sounded like it could pertain to me. But the few of recorded occurrences all took place after a medical episode such as a seizure or brain attack, unlike the quirk that I've been observing my whole grown-up existence.

Through research sites, experts have heard from about 24,000 face-blind individuals, as well as people with all kinds of facial recognition challenges, including sight abnormalities, like when faces appear to be melting. Researchers study many of these people, using instruments like the old/new faces task and the memory for faces evaluation.

Experts have heard from only a handful of people with possible HFF in extended periods of study.

"The occurrence rate is quite low," one expert said of HFF. However, they speculated that there may be a continuum, with some people who think each countenance is known, and others, like me, who only encounter it a multiple instances a month.

{Understanding