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During my twenties, I observed my grandmother through the glass of a coffee shop. I felt stunned – she had passed away the prior year. I stared for a moment, then reminded myself it was impossible to be her.

I'd had similar situations throughout my life. Periodically, I "identified" someone I had never met. Sometimes I could quickly identify who the unknown individual reminded me of – like my grandmother. Other times, a face simply had a vague familiarity I couldn't identify.

Investigating the Range of Face Identification Abilities

In recent times, I became curious if different individuals have these peculiar encounters. When I asked my friends, one mentioned she regularly sees individuals in random places who look familiar. Others at times misidentify a stranger or public figure for someone they know in real life. But some described no such experiences – they could effortlessly identify people they'd met and people they hadn't.

I felt curious by this diversity of responses. Was it just yearning that made me see my grandma that day – or some kind of cognitive error? Studies has found we spend about 14 minutes 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 interpret the same thing.

Comprehending the Continuum of Person Recognition Capacities

Investigators have developed many tests to quantify the skill to recall faces. There exists a broad spectrum: at one side are super-recognizers, who remember faces they have seen only briefly or a considerable time past; at the other are people with prosopagnosia, who often struggle to recognize family, close friends and even themselves.

Some evaluations also measure how proficient someone is at telling if they have not seen a face before. This is where I believe I am deficient. But researchers "haven't extensively researched this" as much as they've examined the ability to remember a face, according to cognitive neuroscientists. It does seem that the two abilities use separate brain functions; for instance, there is indication that super-recognizers and those with facial agnosia do about as well as each other at recognizing new faces, despite their wildly different abilities to remember old faces.

Taking Face Identification Evaluations

I felt interested whether these tests would offer understanding on why strangers look recognizable. Was I someone who constantly recalls a face? I often remember people more than they remember me, and feel disappointed – a feeling that experts say is common for exceptional facial identifiers. But maybe I over-recognize 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 memory for faces evaluation, I had to look at black-and-white photos of a face from different viewpoints, then find it in arrays. During another test that told me to pick out famous people from a mix of photos, many of the faces felt at least familiar, but I couldn't precisely recognize them – comparable to my actual experience.

I felt uncertain about my results. But after analysis of my scores, I had properly distinguished 96% of the famous person faces. The conclusion was that I qualified as a "almost superior face rememberer".

Comprehending False Alarm Percentages

I also excelled in the previously seen/unfamiliar faces task, which was described as especially effective for evaluating someone's recognition for faces. The participant looks at a series of 60 monochrome photos, each of a distinct face. Then they review a series of 120 comparable photos – the first group plus 60 unknown visages – and identify which were in the first set. The superior face rememberer cutoff is roughly 80%; I recalled 78% of the faces I'd seen. On the other end of the continuum, people with facial agnosia properly recognize an average of 57%.

I felt satisfied with my performance, but also astonished. I recognized many of the familiar visages, but seldom confused a new face for one that I'd seen before. My performance on this indicator, called the mistaken recognition percentage, was 18%. Typical rememberers, exceptional facial identifiers and those with facial agnosia all have a incorrect identification frequency of about 30% on average. So why was I misidentifying a unfamiliar individual's face for my elderly relative's?

Exploring Possible Reasons

It was theorized that I possibly possessed some superior face rememberer abilities. Everyone has a inventory of the faces we know in our recall, but superior face rememberers – and possibly almost superior rememberers like me – have a relatively large and high-resolution catalogue. We're also probably to differentiate visages – that is, ascribe traits to each face, such as friendliness or rudeness. Research suggests that the later element helps people to develop and retain faces to long-term memory. While differentiating may help me recognize people, it may also mislead me into seeing my elderly relative in a woman who has a analogous presence.

In moreover, it was thought I might be "a attentive countenance examiner", meaning I pay a lot of attention to faces. Others may have more mistaken recognition moments, thinking they identify someone they don't know. But because I tend to look attentively at faces, I am inclined to notice the unfamiliar individual who looks like my grandma. Indeed, one acquaintance who said she doesn't make face identification mistakes confessed she doesn't really look at the people around her.

Investigating Over-familiarity for Faces

These tests helped me understand where I sat on the range. But I wanted to understand more about what is happening in the brain when we "know" unfamiliar individuals. Examining further, I read about a syndrome called excessive facial recognition (HFF), in which unknown faces appear known. On the surface, this sounded like it could relate to me. But the handful of recorded occurrences all occurred after a health incident such as a convulsion or stroke, unlike the idiosyncrasy that I've been noticing my whole grown-up existence.

Through scientific platforms, experts have heard from about 24,000 prosopagnosics, as well as people with all kinds of person recognition challenges, including visual distortions, like when faces appear to be liquefying. Researchers study many of these people, using instruments 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 many years of research.

"The prevalence is quite low," one expert said of HFF. However, they hypothesized that there may be a range, with some people who think every face is familiar, and others, like me, who only undergo it a few times a month.

{Understanding