In my mid-20s, I noticed my elderly relative through the window of a coffee shop. I felt stunned – she had passed away the prior year. I stared for a brief period, then remembered it couldn't be her.
I'd had similar experiences all through my life. Periodically, I "identified" an individual I didn't know. At times I could quickly identify who the unknown individual reminded me of – like my grandma. On other occasions, a face simply had a vague familiarity I couldn't recognize.
Recently, I started wondering if other people have these peculiar situations. When I asked my companions, one mentioned she frequently sees people in random places who look familiar. Others at times mistake a stranger or celebrity for someone they know in actual life. But some described completely different responses – they could effortlessly recognize people they'd met and people they hadn't.
I felt curious by this diversity of responses. Was it just desire that made me see my grandmother that day – or some kind of mental glitch? Studies has found we spend about approximately 900 seconds of every hour looking at faces – do we just err sometimes? I was beginning to realize that we can all see the same face but not perceive the same thing.
Researchers have developed many evaluations to measure the capacity to remember faces. There exists a broad spectrum: at one extreme are superior face rememberers, who remember faces they have seen only momentarily or a considerable time past; at the other are people with prosopagnosia, who often struggle to identify kin, dear acquaintances and even themselves.
Some assessments also measure how proficient someone is at determining if they have not seen a face before. This is where I suspect I have limitations. But experts "just haven't dug into this" as much as they've studied the skill to remember a face, according to neuroscience experts. It does seem that the two abilities use distinct brain mechanisms; for instance, there is proof that super-recognizers and those with facial agnosia do about as well as each other at discerning new faces, despite their extremely distinct abilities to remember old faces.
I felt curious whether these evaluations would offer understanding on why unfamiliar individuals look recognizable. Was I someone who constantly recalls a face? I often remember people more than they recognize me, and feel let down – a sentiment that scientists say is common for superior face rememberers. But maybe I hyper-recognize faces – to the degree that even some new faces look familiar.
I obtained several person recognition tests. I worked through them, feeling puzzled at times. In one, called the memory for faces evaluation, I had to look at black-and-white 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 known, but I couldn't precisely recognize them – reminiscent to my actual experience.
I felt less than confident about my performance. But after assessment of my results, I had properly distinguished 96% of the famous person faces. The conclusion was that I qualified as a "almost superior face rememberer".
I also performed well in the known/unknown countenances task, which was described as especially effective for evaluating someone's memory for faces. The test-taker looks at a collection of 60 black-and-white photos, each of a separate face. Then they examine a sequence of 120 analogous photos – the original series plus 60 unfamiliar countenances – and indicate which were in the first set. The superior face rememberer threshold is roughly 80%; I remembered 78% of the faces I'd seen. On the other side of the continuum, people with prosopagnosia properly recognize an average of 57%.
I felt satisfied with my score, but also taken aback. I remembered many of the old faces, but seldom misidentified 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 mistaken recognition percentage of about 30% on average. So why was I confusing a unfamiliar individual's face for my grandma's?
It was suggested that I likely possessed some exceptional facial identifier capacities. Everyone has a database of the faces we know in our recollection, but superior face rememberers – and probably near-exceptional individuals like me – have a comparatively extensive and high-resolution catalogue. We're also possibly to differentiate visages – that is, attribute traits to each face, such as amiability or impoliteness. Studies suggests that the second aspect helps people to learn and store faces to enduring recollection. While distinguishing may help me recall people, it may also deceive me into seeing my grandma in a woman who has a analogous presence.
In addition, it was thought I might be "an active face perceiver", meaning I pay a considerable notice to faces. Others may have more incorrect identification moments, thinking they recognize someone they don't know. But because I tend to look attentively at faces, I am disposed to notice the stranger who similar to my grandma. Indeed, one companion who said she doesn't make facial recognition mistakes admitted she doesn't really look at the people around her.
These assessments helped me understand where I positioned on the range. But I wanted to understand more about what is happening in the brain when we "recognize" unknown people. Investigating further, I read about a condition called hyperfamiliarity for faces (HFF), in which unfamiliar faces appear known. Superficially, this sounded like it could apply to me. But the few of reported cases all happened after a physical event such as a seizure or brain attack, unlike the idiosyncrasy that I've been experiencing my whole mature years.
Through research sites, experts have heard from about 24,000 face-blind individuals, as well as people with all kinds of person recognition problems, including perceptual alterations, like when faces appear to be melting. Researchers study many of these people, using instruments like the previously seen/unfamiliar faces task and the Cambridge Face Memory Test.
Experts have heard from only a small number of people with suspected HFF in long durations of study.
"The frequency is quite low," one expert said of HFF. However, they theorized that there may be a continuum, with some people who think all visages is known, and others, like me, who only encounter it a several occasions a month.
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