Throughout my mid-20s, I observed my grandma through the window of a café. I felt stunned – she had died the year before. I stared for a brief period, then reminded myself it couldn't be her.
I'd encountered similar situations all through my life. From time to time, I "recognized" a person I was unacquainted with. Sometimes I could quickly pinpoint who the unknown individual looked like – such as my elderly relative. Other times, a face simply had a subtle recognition I couldn't place.
Lately, I became curious if other people have these odd situations. When I asked my acquaintances, one mentioned she frequently sees individuals in unpredictable places who look familiar. Others occasionally misidentify a unfamiliar individual or celebrity for someone they know in actual life. But some reported no such experiences – they could effortlessly distinguish people they'd met and people they hadn't.
I felt curious by this spectrum of perceptions. Was it just longing that made me see my grandma 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 commencing to comprehend that we can all see the same face but not interpret the same thing.
Investigators have developed many assessments to measure the skill to remember faces. There exists a wide range: at one side are exceptional facial identifiers, who remember faces they have seen only briefly or a considerable time past; at the other are people with face blindness, who often have difficulty to know relatives, close friends and even themselves.
Some evaluations also capture how good someone is at telling if they have not seen a face before. This is where I believe I have limitations. But researchers "haven't thoroughly investigated this" as much as they've studied the capacity to recognize a face, according to neuroscience experts. It does seem that the two capabilities use distinct brain functions; for example, there is indication that superior face rememberers and prosopagnosics do about as well as each other at discerning new faces, despite their vastly dissimilar abilities to recall old faces.
I felt intrigued whether these tests would shed some light on why strangers look familiar. Was I someone who never forgets a face? I often remember people more than they recall me, and feel let down – a sentiment that scientists say is frequent for super-recognizers. But maybe I excessively identify faces – to the extent that even some new faces look known.
I obtained several person recognition tests. I completed them, feeling puzzled 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 arrays. During another test that instructed me to pick out famous people from a mix of photos, many of the faces felt at least known, but I couldn't precisely recognize them – reminiscent to my everyday experience.
I felt doubtful about my outcome. But after evaluation of my results, I had properly distinguished 96% of the famous person faces. The determination was that I qualified as a "borderline super-recognizer".
I also excelled in the previously seen/unfamiliar faces task, which was described as particularly good for assessing someone's recognition for faces. The participant looks at a series of 60 grayscale photos, each of a different face. Then they review a sequence of 120 analogous photos – the original series plus 60 unknown visages – and specify 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 spectrum, people with prosopagnosia accurately identify an average of 57%.
I felt content with my score, but also taken aback. I remembered many of the previously seen countenances, but infrequently confused a unknown visage for one that I'd seen before. My result on this metric, called the false alarm rate, 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 confusing a stranger's face for my grandmother's?
It was theorized that I probably possessed some super-recognizer capabilities. Everyone has a database of the faces we know in our recollection, but super-recognizers – and likely borderline straddlers like me – have a fairly substantial and high-resolution catalogue. We're also likely to individuate faces – that is, ascribe characteristics to each face, such as friendliness or discourtesy. Studies suggests that the latter helps people to acquire and retain faces to enduring recollection. While individuating 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 "an engaged facial observer", meaning I pay a lot of attention to faces. Others may have more incorrect identification moments, thinking they know someone they don't know. But because I tend to look carefully at faces, I am prone to notice the unfamiliar individual who resembles my grandmother. Indeed, one friend who said she doesn't make facial recognition mistakes confessed she doesn't really look at the people around her.
These tests helped me understand where I stood on the spectrum. But I wanted to understand more about what is happening in the brain when we "recognize" strangers. Researching further, I read about a syndrome called excessive facial recognition (HFF), in which unfamiliar faces appear recognizable. On the surface, this sounded like it could apply to me. But the handful of recorded occurrences all occurred after a medical episode such as a seizure or brain attack, unlike the idiosyncrasy that I've been experiencing my whole mature years.
Through investigative websites, experts have heard from about 24,000 those with facial agnosia, as well as people with all kinds of facial recognition difficulties, including perceptual alterations, like when faces appear to be dissolving. Researchers study many of these people, using tools 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 many years of research.
"The prevalence is quite low," one expert said of HFF. However, they speculated that there may be a continuum, with some people who think every face is familiar, and others, like me, who only undergo it a several occasions a month.
A tech enthusiast and business strategist with over a decade of experience in digital transformation and startup consulting.