Science shows why we can't tell Clark Kent is Superman

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How many times have you watched a Superman film or TV show and found yourself almost screaming, "Clark Kent is Superman you dolt!"  Or have you actually screamed this, shocking everyone around you in the theater?

I guess it's because we're in on the joke, whereas, at least according to this research, donning a pair of glasses can be an effective disguise.  Add a hat and a dorky expression, and Superman becomes Clark Kent and no body is the wiser.

Here's the report.

Now go try it.  Put a costume of some sort on over your Superman duds and see for yourself.

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Scientists show that 'Superman' disguise could actually work

Researchers at the University of York have shown that small alterations to a person's appearance, such as wearing glasses, can significantly hinder positive facial identification.  The research has the potential to contribute to future policies concerning photo identification, such as drivers' licences or passports, where an individual has to be matched correctly to their image in order to inform important security decisions.

Psychologists showed participants a number of faces in various 'natural' poses, similar to images seen on Facebook or other social media sites, and asked them to decide whether each pair of images showed the same person or not. Images were shown in three categories -- pairs of faces that wore glasses, images where neither wore glasses, or only one image wore glasses.

In cases where both of the faces wore glasses or where neither wore glasses, accuracy was around 80 per cent. However, when only one of the two faces wore glasses, performance was approximately 6 per cent lower, a statistically significant decrease.

Dr Robin Kramer, from the University of York's Department of Psychology, said: "The question of whether the inhabitants of Metropolis could be realistically deceived by Superman's simple disguise has been rumbling since the comic books first arrived on the stands, but the question becomes a serious one when applied to real-world security issues.

"When a security guard checks a passport photo against the person standing in front of them, they do not have the luxury of familiarity with that face, as Lois does with Superman/Clark Kent. This is something we wanted to investigate further, because we know from previous studies that people are relatively poor at matching faces in various guises when the person is unfamiliar to them.

"We also know from prior work that it is easier to match passport-style photos together when the facial expressions and poses are the same. Here, we investigated unfamiliar face matching, showing participants two unconstrained faces of strangers, with and without glasses, and asked whether the images are the same person or two different people."

The results suggest that people generally find it difficult to correctly match unfamiliar and uncontrolled face images, but they are significantly worse when glasses are worn by only one of the faces.

Co-author, Dr Kay Ritchie, from the University of York's Department of Psychology, added: "In real terms, glasses would not prevent Lois recognising that Clark is in fact Superman as she is familiar with him. For those who do not know him, however, this task is much more difficult, and our results show that glasses do disrupt our ability to recognise the same unfamiliar person from photo-to-photo.

"We hope that this research can be used by legal authorities to help inform future policies on identification for security purposes, particularly in the UK where individuals who normally wear glasses are required to remove them for their identification cards."

The research, Disguising Superman: How glasses affect unfamiliar face matching, is published in Applied Cognitive Psychology.

Story Source:

The above post is reprinted from materials provided by University of York. Note: Content may be edited for style and length.

Journal Reference:

Robin S. S. Kramer, Kay L. Ritchie. Disguising Superman: How Glasses Affect Unfamiliar Face Matching. Applied Cognitive Psychology, 2016

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