🔗 Share this article

Throughout my twenties, I noticed my elderly relative through the window of a café. I felt dumbstruck – she had departed the year before. I gazed for a brief period, then recalled it couldn't possibly be her.

I'd had comparable situations throughout my life. Occasionally, I "knew" an individual I had never met. At times I could promptly pinpoint who the unfamiliar person reminded me of – such as my elderly relative. Other times, a countenance simply had a subtle recognition I couldn't recognize.

Examining the Variety of Face Identification Capabilities

In recent times, I started wondering if others have these peculiar experiences. When I asked my companions, one mentioned she frequently sees individuals in unpredictable places who look recognizable. Others sometimes misidentify a unfamiliar individual or famous person for someone they know in real life. But some reported nothing of the kind – they could effortlessly distinguish people they'd met and people they hadn't.

I felt fascinated by this spectrum of responses. Was it just desire that made me see my grandma that day – or some kind of cognitive error? Scientific investigation has found we spend about approximately 900 seconds of every hour looking at faces – do we just err sometimes? I was starting to understand that we can all see the same face but not interpret the same thing.

Grasping the Spectrum of Facial Recognition Abilities

Scientists have created many assessments to assess the skill to recall faces. There exists a broad spectrum: at one end are exceptional facial identifiers, who recognize faces they have seen only briefly or a considerable time past; at the other are people with face blindness, who often find it challenging to recognize family, close friends and even themselves.

Some evaluations also assess how proficient someone is at recognizing if they have not seen a face before. This is where I think I am deficient. But scientists "haven't extensively researched this" as much as they've examined the ability to remember a face, according to neuroscience experts. It does seem that the two skills use different brain processes; for instance, there is proof that superior face rememberers and those with facial agnosia do about as well as each other at recognizing new faces, despite their vastly dissimilar abilities to remember old faces.

Taking Facial Recognition Tests

I felt interested whether these evaluations would shed some light on why unfamiliar individuals look familiar. Was I someone who constantly recalls a face? I often recall people more than they remember me, and feel disheartened – a sentiment that experts say is typical for exceptional facial identifiers. But maybe I hyper-recognize faces – to the point that even some new faces look familiar.

I was sent several face identification tests. I waded through them, feeling stumped at times. In one, called the Cambridge Face Memory Test, I had to look at black-and-white photos of a face from different viewpoints, then find it in lineups. During another test that directed me to pick out famous people from a mix of photos, many of the faces felt at least recognizable, but I couldn't quite place them – comparable to my actual experience.

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

Understanding Incorrect Identification Rates

I also performed well in the previously seen/unfamiliar faces task, which was described as particularly good for measuring someone's recall for faces. The subject looks at a series of 60 black-and-white photos, each of a distinct face. Then they review a sequence of 120 similar photos – the original series plus 60 unfamiliar countenances – and specify which were in the first set. The superior face rememberer benchmark is roughly 80%; I remembered 78% of the faces I'd seen. On the other end of the spectrum, people with prosopagnosia properly recognize an average of 57%.

I felt satisfied with my result, but also astonished. I remembered many of the familiar visages, but seldom confused a unknown visage for one that I'd seen before. My result on this metric, called the incorrect identification frequency, was 18%. Typical rememberers, exceptional facial identifiers and face-blind individuals all have a incorrect identification frequency of about 30% on average. So why was I mistaking a stranger's face for my grandma's?

Examining Potential Explanations

It was suggested that I likely possessed some superior face rememberer capabilities. Everyone has a catalogue of the faces we know in our recollection, but superior face rememberers – and probably near-exceptional individuals like me – have a relatively large and high-resolution catalogue. We're also likely to differentiate visages – that is, ascribe qualities to each face, such as approachability or impoliteness. Scientific investigation suggests that the second aspect helps people to acquire and retain faces to permanent recall. While differentiating may help me remember people, it may also trick me into seeing my elderly relative in a woman who has a comparable demeanor.

In moreover, it was believed I might be "a attentive countenance examiner", meaning I pay a lot of attention to faces. Others may have more false alarm moments, thinking they recognize someone they don't know. But because I tend to look carefully at faces, I am prone to notice the unknown person who looks like my grandma. Indeed, one friend who said she doesn't make face identification mistakes acknowledged she doesn't really look at the people around her.

Examining Hyperfamiliarity for Faces

These assessments helped me understand where I positioned on the continuum. But I wanted to understand more about what is happening in the brain when we "recognize" unknown people. Investigating further, I read about a disorder called hyperfamiliarity for faces (HFF), in which unfamiliar faces appear familiar. Superficially, this sounded like it could apply to me. But the few of documented instances all took place after a physical event such as a convulsion or brain attack, unlike the idiosyncrasy that I've been experiencing my whole grown-up existence.

Through investigative websites, experts have heard from about 24,000 those with facial agnosia, as well as people with all kinds of facial recognition challenges, including perceptual alterations, like when faces appear to be melting. Researchers study many of these people, using tools like the previously seen/unfamiliar faces task and the memory for faces evaluation.

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

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

{Understanding