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Throughout my twenties, I observed my elderly relative through the pane of a coffee shop. I felt dumbstruck – she had departed the previous year. I looked intently for a brief period, then remembered it couldn't possibly be her.

I'd encountered similar experiences all through my life. From time to time, I "identified" someone I had never met. Sometimes I could promptly identify who the unknown individual resembled – like my elderly relative. On other occasions, a countenance simply had a vague familiarity I couldn't place.

Investigating the Variety of Face Identification Experiences

In recent times, I started wondering if different individuals have these unusual encounters. When I questioned my friends, one said she frequently sees people in random places who look known. Others sometimes mistake a unknown person or celebrity for someone they know in everyday existence. But some mentioned no such experiences – they could effortlessly identify people they'd met and people they hadn't.

I felt curious by this diversity of experiences. Was it just desire that made me see my elderly relative that day – or some kind of cognitive error? Research has found we spend about approximately 900 seconds of every hour looking at faces – do we just have inaccuracies sometimes? I was commencing to comprehend that we can all see the same face but not perceive the same thing.

Comprehending the Spectrum of Facial Recognition Skills

Investigators have created many assessments to quantify the ability to recall faces. There exists a broad spectrum: at one end are exceptional facial identifiers, who recall faces they have seen only for a short time or a long time ago; at the other are people with prosopagnosia, who often struggle to identify family, dear acquaintances and even themselves.

Some evaluations also measure how skilled someone is at telling if they have not seen a face before. This is where I suspect I fall short. But scientists "haven't thoroughly investigated this" as much as they've studied the skill to recognize a face, according to cognitive neuroscientists. It does seem that the two capabilities use different brain mechanisms; for case, there is proof that superior face rememberers and prosopagnosics do about as well as each other at identifying new faces, despite their extremely distinct abilities to remember old faces.

Taking Face Identification Assessments

I felt intrigued whether these assessments would offer understanding on why unfamiliar individuals look familiar. Was I someone who never forgets a face? I often remember people more than they recognize me, and feel disheartened – a emotion that experts say is common for exceptional facial identifiers. But maybe I excessively identify faces – to the extent that even some new faces look familiar.

I received several face identification tests. I worked through them, feeling stumped at times. In one, called the Cambridge Face Memory Test, I had to look at monochrome photos of a face from three angles, then find it in arrays. During another test that told 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 – comparable to my real-life experience.

I felt doubtful about my performance. But after evaluation of my performance, I had properly distinguished 96% of the celebrity faces. The finding was that I qualified as a "almost superior face rememberer".

Understanding Mistaken Recognition Percentages

I also excelled in the old/new faces task, which was described as notably useful for assessing someone's recall for faces. The participant looks at a series of 60 monochrome photos, each of a different face. Then they look through a string of 120 similar photos – the initial collection plus 60 new faces – and indicate which were in the original collection. The superior face rememberer threshold is roughly 80%; I remembered 78% of the faces I'd seen. On the other extreme of the range, people with prosopagnosia accurately identify an average of 57%.

I felt content with my performance, but also surprised. I recalled many of the old faces, but rarely mistook a new face for one that I'd seen before. My performance on this metric, called the mistaken recognition percentage, was 18%. Normal recognizers, superior face rememberers and prosopagnosics all have a false alarm rate of about 30% on average. So why was I misidentifying a unknown person's face for my grandma's?

Investigating Possible Causes

It was proposed that I likely possessed some exceptional facial identifier capacities. Everyone has a inventory of the faces we know in our memory, but super-recognizers – and probably borderline straddlers like me – have a fairly substantial and detailed catalogue. We're also probably to differentiate visages – that is, ascribe qualities to each face, such as friendliness or impoliteness. Research suggests that the latter helps people to acquire and store faces to permanent recall. While individuating may help me remember people, it may also deceive me into seeing my grandma in a woman who has a comparable demeanor.

In furthermore, 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 attentively at faces, I am prone to notice the unknown person who resembles my grandma. Indeed, one friend who said she doesn't make facial recognition mistakes admitted she doesn't really look at the people around her.

Investigating Hyperfamiliarity for Faces

These evaluations helped me understand where I sat on the spectrum. But I wanted to understand more about what is happening in the brain when we "identify" unknown people. Researching further, I read about a disorder called over-familiarity with countenances (HFF), in which unknown faces appear recognizable. Initially, this sounded like it could relate to me. But the handful of recorded occurrences all occurred after a medical episode such as a convulsion or stroke, unlike the idiosyncrasy that I've been experiencing my whole mature years.

Through investigative websites, experts have heard from about 24,000 prosopagnosics, as well as people with all kinds of person recognition problems, including visual distortions, like when faces appear to be dissolving. Researchers study many of these people, using instruments like the known/unknown countenances task and the memory for faces evaluation.

Experts have heard from only a small number of people with suspected HFF in many years of study.

"The occurrence rate is quite low," one expert said of HFF. However, they theorized that there may be a range, with some people who think every face is recognizable, and others, like me, who only encounter it a several occasions a month.

{Understanding