🔗 Share this article

Throughout my mid-20s, I spotted my grandmother through the pane of a coffee house. I felt astonished – she had died the prior year. I gazed for a moment, then recalled it couldn't possibly be her.

I'd encountered similar occurrences all through my life. From time to time, I "recognized" an individual I was unacquainted with. Occasionally I could promptly pinpoint who the stranger looked like – such as my elderly relative. In other instances, a visage simply had a indistinct knowingness I couldn't place.

Exploring the Spectrum of Person Recognition Capabilities

Lately, I started wondering if others have these unusual encounters. When I asked my companions, one mentioned she regularly sees individuals in random places who look familiar. Others sometimes misidentify a stranger or public figure for someone they know in everyday existence. But some described nothing of the kind – they could effortlessly recognize people they'd met and people they hadn't.

I felt fascinated by this spectrum of experiences. Was it just longing that made me see my grandma that day – or some kind of brain malfunction? Studies 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 Continuum of Face Identification Skills

Investigators have developed many evaluations to quantify the ability to remember faces. There exists a broad spectrum: at one side are exceptional facial identifiers, who recognize faces they have seen only momentarily or a distant past; at the other are people with facial agnosia, who often find it challenging to know kin, close friends and even themselves.

Some assessments also assess how proficient someone is at determining if they have not seen a face before. This is where I suspect I am deficient. But experts "haven't extensively researched this" as much as they've looked at the capacity to remember a face, according to brain researchers. It does seem that the two capabilities use separate brain processes; for example, there is proof that super-recognizers and face-blind individuals do about as well as each other at recognizing new faces, despite their wildly different abilities to recall old faces.

Undergoing Facial Recognition Assessments

I felt interested whether these evaluations would offer understanding on why unknown people look familiar. Was I someone who never forgets a face? I often recognize people more than they remember me, and feel disheartened – a sentiment that researchers say is typical for exceptional facial identifiers. But maybe I excessively identify faces – to the extent that even some new faces look known.

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 grayscale photos of a face from different viewpoints, then find it in arrays. 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 – similar to my real-life experience.

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

Grasping False Alarm Frequencies

I also excelled in the previously seen/unfamiliar faces task, which was described as notably useful for evaluating someone's memory for faces. The participant looks at a series of 60 monochrome photos, each of a different face. Then they examine a sequence of 120 similar photos – the first group plus 60 unknown visages – and specify which were in the initial group. The exceptional facial identifier threshold is roughly 80%; I remembered 78% of the faces I'd seen. On the other end of the continuum, people with facial agnosia correctly guess an average of 57%.

I felt satisfied with my score, but also taken aback. I recognized many of the previously seen countenances, but infrequently misidentified a unknown visage for one that I'd seen before. My result on this metric, called the incorrect identification frequency, was 18%. Normal recognizers, exceptional facial identifiers and those with facial agnosia all have a mistaken recognition percentage of about 30% on average. So why was I mistaking a stranger's face for my grandmother's?

Exploring Potential Explanations

It was suggested that I probably possessed some exceptional facial identifier capacities. Everyone has a inventory of the faces we know in our recall, but superior face rememberers – and probably borderline straddlers like me – have a fairly substantial and detailed catalogue. We're also probably to differentiate visages – that is, attribute characteristics to each face, such as approachability or rudeness. Studies suggests that the later element helps people to acquire and commit faces to long-term memory. While individuating may help me recall people, it may also mislead me into seeing my grandma in a woman who has a analogous presence.

In addition, it was believed I might be "a attentive countenance examiner", meaning I pay a lot of attention 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 prone to notice the unfamiliar individual who looks like 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 Hyperfamiliarity for Faces

These evaluations helped me understand where I sat on the range. But I wanted to understand more about what is happening in the brain when we "identify" strangers. Researching further, I read about a condition called over-familiarity with countenances (HFF), in which unfamiliar faces appear familiar. On the surface, this sounded like it could apply to me. But the few of recorded occurrences all happened after a physical event such as a seizure or brain attack, unlike the quirk that I've been noticing my whole mature years.

Through scientific platforms, experts have heard from about 24,000 prosopagnosics, as well as people with all kinds of face identification problems, including sight abnormalities, like when faces appear to be dissolving. Researchers study many of these people, using methods like the known/unknown countenances task and the facial recall assessment.

Experts have heard from only a few of people with possible HFF in many years of study.

"The prevalence 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 undergo it a few times a month.

{Understanding