Category: Perception

Cat People, Beware — Posing With Your Pet Could Make You Appear Less Dateable

By Emily Reynolds

If you’re looking to find love on a dating app, there’s plenty you need to think about: what to include in your bio, the interests you list, and what you say you’re looking for. And in an age of rapid swiping, you’re probably going to need a knock-out profile picture too.

But don’t be too quick to assume that a picture with your pet might boost your chances — at least if you’re a male cat owner, that is. According to Lori Kogan and Shelly Volsche, writing in Animals, men holding cats in photographs are seen as less masculine, more neurotic and ultimately less dateable.

Continue reading “Cat People, Beware — Posing With Your Pet Could Make You Appear Less Dateable”

We’re Not Very Good At Identifying Illness From Sounds of Coughs and Sneezes

By Emily Reynolds

At the moment, most of us are on red alert when it comes to sounds of illness, with sniffling in the supermarket or coughing behind us in a queue the cause of significant alarm.

And while we might like to think we’re able to tell the difference between someone clearing their throat and somebody who is genuinely unwell, new research published in Proceedings of the Royal Society B suggests we’re less good at identifying threats than we think.

Continue reading “We’re Not Very Good At Identifying Illness From Sounds of Coughs and Sneezes”

Gradual Hearing Loss “Reorganises” Brain’s Sensory Areas And Impairs Memory (In Mice)

By Emma Young

In 2011, a US-based study published in the Journal of the American Medical Association found that people with hearing loss were more likely to develop dementia. This alarming result prompted a number of follow-up studies, which have substantiated the link and further explored the risk. But the mechanism of how hearing loss raises this risk has not been clear.

Now a new study, by a team at Ruhr University Bochum in Germany, offers an explanation. The researchers found that gradual hearing loss (the sort commonly experienced into older age) “profoundly” alters normal processes in the brain’s cortex and hippocampus, and that this impairs memory. This work was conducted on mice, not humans. But it provides useful new insights into what might happen in people.

Continue reading “Gradual Hearing Loss “Reorganises” Brain’s Sensory Areas And Impairs Memory (In Mice)”

Dreams Aren’t Just Visual: We Often Hear Voices And Other Sounds Too

By Emma Young

“At least since the philosophers of ancient Greece, scholars have pointed out the analogy between madness (psychosis) and dreaming…” So begins a new paper, published in PLoS One, that seems to shore up that analogy.

Dreams and psychotic hallucinations do have things in common. They both feature perceptual sensations that seem real, but which are conjured up by our brains.

However, there are also differences. While dreams are known to be highly visual, psychotic hallucinations are primarily auditory. They generally involve hearing things that aren’t real rather than seeing things that don’t exist. And this difference is an important reason why “the idea of dreaming as a model for psychosis has remained speculative and controversial,” write Roar Fosse of the Vestre Viken Hospital Trust, Norway, and Frank Larøi of the Norwegian Centre of Excellence for Mental Disorders Research at the University of Oslo.

However, to date, there’s been very little investigation into perceptions of sounds in dreams, the pair reports. And now they have data suggesting that, in fact, auditory perceptions are common. If this is the case, the links between psychotic experiences and dreams may be stronger than has been recently supposed.

Continue reading “Dreams Aren’t Just Visual: We Often Hear Voices And Other Sounds Too”

This Weird, Sound-Induced Illusion Makes You Feel That Your Finger Has Grown Longer

By Emma Young

Adults are vulnerable to all kinds of body illusions. We can be made to feel that a fake hand, or even a fake body, is our own; that we’ve left our body; even that we’re the size of a doll. These illusions work because our brains use information from various senses to create mental representations of our bodies. Mess with some of these sensory signals, and you can alter those representations, sometimes drastically.

Work to date suggests that young children don’t show the same susceptibilities to body illusions, presumably because the systems that underpin them are still developing. Now a new study, published in Scientific Reports, has found that a bizarre auditory-induced illusion that affects adults doesn’t work in quite the same way in young kids, either.

Continue reading “This Weird, Sound-Induced Illusion Makes You Feel That Your Finger Has Grown Longer”

Here’s How We Perceive The Political Leanings Of Different Fonts

Photo: The serif font Jubilat was used on signs for Bernie Sanders’ 2016 presidential bid — though a new study suggests that sans serifs are generally seen as more liberal. Credit: Brett Carlsen/Getty Images.

By Emily Reynolds

Fonts can be very distinctive indeed. Even if robbed of their original context, it can be easy to identify the fonts used on the front of a Harry Potter book, adorning a Star Wars poster, or on the side of a Coca-Cola can, to name a few examples.

But particular fonts can also leave us with other impressions: the font used to brand a beloved book, for example, has different emotional connotations to the one you use to type emails. And according to new research in Communication Studies from Katherine Haenschen and Daniel Tamul at Virginia Tech, particular fonts may also carry some political connotations, too.

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Cold Days Can Make Us Long For Social Contact — But Warming Up Our Bodies Eliminates This Desire

Woman drinking hot tea, heating feet at home.

By Emma Young

From our earliest moments, our awareness of being physically close to someone else is tied up with perceptions of actual warmth. It’s been suggested that this relationship becomes deeply ingrained, with temperature in turn affecting our social perceptions on into adulthood. However, some of the most-publicised results in this field have failed to replicate, leading critics to query whether the relationship really exists.

Now a new paper, published in Social Psychology, provides an apparently compelling explanation for at least some inconsistencies in the results, and supports the idea that our temperature does indeed affect our social judgements.

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Here’s The First Evidence That Even Lizards Succumb To Optical Illusions

Central bearded dragon on the rock

By Emma Young

It’s been known for centuries that we experience all kinds of optical illusions, and in the past few decades, researchers have shown that some animals, including monkeys, pigeons, and dogs, do too. Now the first ever study of this kind in reptiles has found that even the bearded dragon falls for an optical illusion that we humans succumb to.

Perceptual illusions — subjective interpretations of physical information — are interesting to psychologists because they reveal important insights into how we construct our representations of the world. This new work, published in the Journal of Comparative Psychology, provides evidence that at least one reptile can be counted among the animals don’t simply passively process retinal signals, but actively interpret visual data, too.

Continue reading “Here’s The First Evidence That Even Lizards Succumb To Optical Illusions”

When Does The Present Become The Future? It Depends Who You Ask

GettyImages-530941167.jpgBy Emma Young

In 2017, in my first ever post for the Digest, I wrote about a paper that challenged the popular idea that “now” — also known as the “subjective present” — is three seconds long. It’s just not possible to define the present so strictly, this review concluded.

Instead of trying to explore what constitutes “right now”, another way to get at our conceptions of time is to ask: when does the present end and the future begin? And precisely this question has now been explored in a series of studies by Hal Hershfield at UCLA and Sam Maglio at the University of Toronto. In their paper, published in the Journal of Experimental Psychology, the pair report that these perceptions can vary substantially between people — and can affect the kinds of choices that we make, with potentially significant implications for our future lives. Continue reading “When Does The Present Become The Future? It Depends Who You Ask”