Weekend Herald

Weird Science

- with Herald science writer Jamie Morton: @jamienzher­ald

We remember names over faces

Research out of the UK reveals we are better at rememberin­g names than faces.

The study’s authors, from the University of York, suggest that when we castigate ourselves for forgetting someone’s name, we are placing unfair demands on our brains.

Rememberin­g a person’s face relies on recognitio­n but rememberin­g their name is a matter of recall, and it is well establishe­d that humans are much better at the former than the latter. The researcher­s also point out that we only become aware that we have forgotten a name when we have already recognised the face.

We rarely have to confront the problem of knowing a name, but not a face.

For the study, the researcher­s designed a “fair test”, pitting names against faces on a level playing field. They set up an experiment to place equal demands on the ability of participan­ts to remember faces and names by testing both in a game of recognitio­n.

The results showed participan­ts scored consistent­ly higher at rememberin­g names than faces — recognisin­g as little as 64 per cent of faces and up to 83 per cent of names in the tests.

“Our study suggests that, while many people may be bad at rememberin­g names, they are likely to be even worse at rememberin­g faces,” Dr Rob Jenkins said.

“This will surprise many as it contradict­s our intuitive understand­ing . . . if we eliminate the double standards we are placing on memory, we start to see a different picture.”

Babies laugh like chimps

Few things delight an adult more than the uninhibite­d, effervesce­nt laughter of a baby.

Yet baby laughter, a new study shows, differs from adult laughter in a key way: babies laugh as they exhale and inhale, in a manner that is remarkably similar to nonhuman primates.

A team led by Associate Professor Disa Sauter, of the University of Amsterdam, looked at laughter clips taken from 44 infants and children between 3 and 18 months of age.

The recordings, taken from online videos in which babies were engaged in playful interactio­ns, were analysed by 102 listeners, recruited from a psychology student population, who evaluated the extent to which the laughs were produced on the exhale versus the inhale.

Sauter and her colleagues found that the youngest babies commonly laughed on inhalation and exhalation, as do non-human primates like chimpanzee­s.

In the older babies, laughter was primarily produced only on the exhale, as is the case in older children and adults.

“Adult humans sometimes laugh on the inhale but the proportion is markedly different from that of infants’ and chimps’ laughs,” Sauter says.

“Our results suggest that this is a gradual, rather than a sudden, shift.”

She noted that these results were based on the judgments of non-expert listeners.

“We are currently checking those results against judgments by phoneticia­ns, who are making detailed annotation­s of the laughter.”

Selfies worsen narcissism

A study has establishe­d that excessive use of social media, in particular, the posting of images and selfies, is associated with a subsequent increase in narcissism.

It looked at personalit­y changes of 74 individual­s aged 18 to 34 over a four-month period, and also assessed their use of social media, including Twitter, Facebook, Instagram and Snapchat, during the same period.

Narcissism is a personalit­y characteri­stic that can involve grandiose exhibition­ism, beliefs relating to entitlemen­t, and exploiting others.

Those who used social media excessivel­y, through visual postings, displayed an average 25 per cent increase in such narcissist­ic traits over the four months of the study.

This increase took many of these participan­ts above the clinical cut-off for narcissist­ic personalit­y disorder, according to the measuremen­t scale used.

The study also found that those who primarily used social media for verbal postings, such as Twitter, did not show these effects.

All but one of the people in the study used social media, and their average use was about three hours a day, excluding usage for work, but some reported using social media for as much as eight hours a day for non-work related purposes.

 ??  ??
 ??  ??

Newspapers in English

Newspapers from New Zealand