Nav: Home

For adults, the terrible twos are a confusing earful

November 06, 2018

WASHINGTON, D.C., NOVEMBER 6, 2018 -- Here's another reason you might be exhausted after that preschool birthday party: Your brain had to work to figure out who actually asked for more ice cream.

"What we found with two-and-a-half-year-olds is that it's amazingly hard for adults to identify who's talking," said Angela Cooper, a postdoctoral researcher at the University of Toronto.

Cooper's co-authored research will be presented in the poster session at the Acoustical Society of America's 176th Meeting, held in conjunction with the Canadian Acoustical Association's 2018 Acoustics Week in Canada, Nov. 5-9 at the Victoria Conference Centre in Victoria, Canada.

The study, with University of Toronto professor Elizabeth K. Johnson and postdoctoral researcher Natalie Fecher, used a space alien interactive game created by Cooper to elicit recordings from over 50 native English-speaking Toronto-area two-and-a-half-year-old children individually saying 32 common words like tree, dog, ball and elephant. The same words were recorded by the children's mothers.

In the experiment, University of Toronto undergraduate students aged 18-25 each listened to 80 pairs of words spoken by 20 of the children and indicated whether the words were spoken by the same or a different individual. They did the same for 20 of the adult voices.

"Listeners were significantly worse at telling apart child voices relative to adult voices," Cooper said. Participants correctly identified different adult voices 65 percent of the time, but only about 40 percent of the time with the squeaky preschooler voices.

"I find it particularly interesting that the participants' ability to identify adult voices was not related to their ability to identify children's voices," Cooper said. "You're maybe using different information or you're processing things slightly differently when you're listening to an adult voice versus when you're listening to a child's voice."

In a second stage of the study, the researchers found that after a training session that included listening to just four different child and four different adult voices, participants had improved voice identification skills, though the improvement was less for children's voices than adult voices.

"Part of this training process is retuning what speech cues we need to pay attention to," she said. "Often children have particular mispronunciations. Some kids will say 'poon' instead of spoon, or elephant becomes 'ephant'. We might be actually cuing in to which child makes different kinds of errors."

In one of a series of follow-up studies, the researchers are using pupillometry, a measure of pupil dilation, to quantify adult cognitive effort involved in trying to differentiate between the voices of two-and-a-half-year-old children.

As for the next kids' birthday party?

"What I'd like to say to parents is that with exposure it does get easier over time," Cooper said.
-end-
Presentation #2pSC34, "Distinguishing Dick from Jane: Children's voices are more difficult to identify than adults' voices," by Natalie Fecher, Angela Cooper and Elizabeth K. Johnson will take place Tuesday, Nov. 6, 2:00 p.m. in the Upper Pavilion (VCC) of the Victoria Conference Center in Victoria, British Columbia, Canada.

MORE MEETING INFORMATION

USEFUL LINKS

Main meeting website: https://acousticalsociety.org/asa-meetings/

Meeting technical program: https://ep70.eventpilotadmin.com/web/planner.php?id=ASAFALL18

Hotel information: https://acousticalsociety.org/asa-meetings/#hr

WORLD WIDE PRESS ROOM

In the coming weeks, ASA's World Wide Press Room will be updated with additional tips on dozens of newsworthy stories and with lay language papers, which are 300-800 word summaries of presentations written by scientists for a general audience and accompanied by photos, audio, and video. You can visit the site, beginning in late October, at http://acoustics.org/world-wide-press-room/.

PRESS REGISTRATION

We will grant free registration to credentialed journalists and professional freelance journalists. If you are a reporter and would like to attend, contact Rhys Leahy or the AIP Media Line (media@aip.org, 301-209-3090). We can also help with setting up interviews and obtaining images, sound clips or background information.

LIVE MEDIA WEBCAST

A press briefing featuring a selection of newsworthy research will be webcast live from the conference Tuesday, Nov. 6, 2018. Times and topics to be announced. Members of the media should register in advance at http://aipwebcasting.com.

ABOUT ASA

The Acoustical Society of America (ASA) is the premier international scientific society in acoustics devoted to the science and technology of sound. Its 7,000 members worldwide represent a broad spectrum of the study of acoustics. ASA publications include The Journal of the Acoustical Society of America (the world's leading journal on acoustics), Acoustics Today magazine, books, and standards on acoustics. The society also holds two major scientific meetings each year. For more information about ASA, visit https://acousticalsociety.org.

ABOUT CAA

The Canadian Acoustical Association (CAA) is a professional, interdisciplinary organization that fosters communication among people working in all areas of acoustics in Canada; promotes the growth and practical application of knowledge in acoustics; encourages education, research, protection of the environment, and employment in acoustics; and is an umbrella organization through which general issues in education, employment and research can be addressed at a national and multidisciplinary level. For more information about CAA, visit http://caa-aca.ca.

Acoustical Society of America

Related Children Articles:

Do children inherently want to help others?
A new special section of the journal Child Development includes a collection of ten empirical articles and one theoretical article focusing on the predictors, outcomes, and mechanisms related to children's motivations for prosocial actions, such as helping and sharing.
Children need conventional CPR; black and Hispanic children more likely to get Hands-Only
While compressions-only or Hands-Only CPR is as good as conventional CPR for adults, children benefit more from the conventional approach that includes rescue breaths.
Cohen Children's Medical Center study: Children on autism spectrum more likely to wander, disappear
A new study by researchers at Cohen Children's Medical Center of New York suggests that more than one-quarter million school-age children with autism spectrum disorder or other developmental disorders wander away from adult supervision each year.
The importance of children at play
Research highlights positive strengths in developmental learning for Latino children in low-income households based on their interactive play skills.
Racial disparities in pain children of children with appendicitis in EDs
Black children were less likely to receive any pain medication for moderate pain and less likely to receive opioids for severe pain than white children in a study of racial disparities in the pain management of children with appendicitis in emergency departments, according to an article published online by JAMA Pediatrics.
More Children News and Children Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Anthropomorphic
Do animals grieve? Do they have language or consciousness? For a long time, scientists resisted the urge to look for human qualities in animals. This hour, TED speakers explore how that is changing. Guests include biological anthropologist Barbara King, dolphin researcher Denise Herzing, primatologist Frans de Waal, and ecologist Carl Safina.
Now Playing: Science for the People

#534 Bacteria are Coming for Your OJ
What makes breakfast, breakfast? Well, according to every movie and TV show we've ever seen, a big glass of orange juice is basically required. But our morning grapefruit might be in danger. Why? Citrus greening, a bacteria carried by a bug, has infected 90% of the citrus groves in Florida. It's coming for your OJ. We'll talk with University of Maryland plant virologist Anne Simon about ways to stop the citrus killer, and with science writer and journalist Maryn McKenna about why throwing antibiotics at the problem is probably not the solution. Related links: A Review of the Citrus Greening...