Showing posts with label gestures. Show all posts
Showing posts with label gestures. Show all posts

Tuesday, 30 July 2013

Children who use gestures tend to perform better on cognitive tasks

Main Category: Psychology / Psychiatry
Also Included In: Pediatrics / Children's Health
Article Date: 30 Jul 2013 - 0:00 PDT Current ratings for:
Children who use gestures tend to perform better on cognitive tasks
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In the first study of its kind, SF State researchers have shown that younger children who use gestures outperform their peers in a problem-solving task.

The task itself is relatively simple -- sorting cards printed with colored shapes first by color, and then by shape. But the switch from color to shape can be tricky for children younger than 5, says Professor of Psychology Patricia Miller.

In a new study due to be published in the August, 2013 issue of Developmental Psychology, Miller and SF State graduate student Gina O'Neill found that young children who gesture are more likely to make the mental switch and group the shapes accurately.

In fact, gesturing seemed to trump age when it came to the sorting performance of the children, who ranged from 2 and a half years old to 5 years old. In the color versus shape task, as well as one that asked children to sort pictures based on size and spatial orientation, younger children who gestured often were more accurate in their choices than older children who gestured less. The children's gestures included rotating their hands to show the orientation of a card or using their hands to illustrate the image on the card, for example gesturing the shape of rabbits' ears for a card depicting a rabbit.

"Gina and I were surprised by the strength of the effect. Still, the findings are consistent with a growing body of research showing that mind and body work closely together in early cognitive development," Miller said.

"The findings are a reminder of how strong individual differences are among children of a particular age," she added. "Certain 3-year-olds look like typical 4-year-olds. This likely reflects an interaction of natural talent and particular experiences -- both nature and nurture, as usual."

There is a growing body of research that suggests gesturing may play a significant role in the processes that people use to solve a problem or achieve a goal. These processes include holding information in memory, keeping the brain from choosing a course too quickly and being flexible in adding new or different information to handle a task.

Studies have shown that gesturing can help older children learn new math concepts, for example. "Really, though, there is evidence that gesturing helps with difficult cognitive tasks at any age," Miller said. "Even we adults sometimes gesture when we're trying to organize our tax receipts or our closets. When our minds are overflowing we let our hands take on some of the cognitive load."

O'Neill and Miller observed the children's spontaneous gestures as they performed the tasks, as well as gestures they were encouraged to make to explain their sorting choices. Both kinds of gestures were counted in comparing high and low gesturing children.

Children who did a lot of gesturing did better at the sorting task than those who didn't gesture as much -- even when they did not use gesturing during the task itself, the researchers found. This makes it difficult to determine whether it's the gesturing itself that helps the children perform the task, or whether children who use a lot of gestures are simply at a more advanced cognitive level than their peers. It is a question that Miller hopes to answer in further studies.

Miller said there is "quite a bit of evidence now that gestures can help children think," perhaps by helping the brain keep track of relevant information or by helping the brain reflect on the possibilities contained within a task. "In my opinion, children shouldn't be discouraged from gesturing when they want to gesture during learning," she said. "Adults sometimes -- appropriately -- say to children, 'use your words,' but some children may think this applies to all situations."

Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
Visit our psychology / psychiatry section for the latest news on this subject.

The study, "A Show of Hands: Relations between Young Children's Gesturing and Executive Function," will be published in the August, 2013 issue of the journal Developmental Psychology.

San Francisco State University

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Sunday, 28 July 2013

Fish brains gave us our hand gestures

Editor's Choice
Main Category: Biology / Biochemistry
Also Included In: Neurology / Neuroscience
Article Date: 24 Jul 2013 - 9:00 PDT Current ratings for:
Fish brains gave us our hand gestures
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We might have evolved a long way from the communication skills of fish, but it seems it is fish we should thank for the effectiveness of using hand gestures while talking.

Andrew Bass, professor of neurobiology and behavior at Cornell University in Ithaca, NY, has done research offering "evidence that the evolutionary origins of the link between speech and gesturing can be traced to a developmental compartment in the caudal hindbrain of fish."

The neurobiologist found that fish brains have a compartment containing both the neural system that allows them to "vocalize" and the system that enables them to "gesture" - move their pectoral fins. We humans also use the same part of our brains for both talking and hand gesturing, he says.

Prof. Andrew Bass is Cornell University's associate vice provost for research and lists "animal communication - especially production and encoding of vocal signals - and evolution and sexual differentiation of brain and behavior" as his particular research interests. He recently presented his work at the Society for Experimental Biology's July meeting in Valencia, Spain.

Larval midshipman fish
Freshly hatched larval midshipman fish. ?Prof. Bass studied their early brain development. Photo credit: Margaret Marchaterre/Cornell University

Prof. Bass told Medical News Today: "Using methods to understand how the brain is connected to different muscle groups, we mapped the early development of two systems in the brain that control muscles that allow fish to vocalize and to move their pectoral fins."

He knew that the early development of the brain of vertebrates (fish, amphibians, reptiles, birds and mammals) was made up of compartments or segments. "A major question before us," he said, was to find out their "functional significance." He added: "Might these compartments in the adult brain represent behavioral modules, for example, vocalization and movement of pectoral appendages - pectoral fins in fish, forelimbs in other animals, including ourselves?"

Prof. Bass told MNT:

"Using methods to understand how the brain is connected to different muscle groups, we mapped the early development of two systems in the brain that control muscles that allow fish to vocalize and to move their pectoral fins. We found that these systems arise from the same compartment."

The researchers say there is plenty of evidence to show a behavioral link in humans between speech and gesturing, but that Prof. Bass's work "provides rare proof of a neural connection between the two types of communication." He added in a Cornell statement:

"Humans who are blind move their hands when they are speaking.

This reflects the essence of the deep-rooted coupling of these two communication systems."

We owe fish a high-five of thanks.

Written by Markus MacGill


Copyright: Medical News Today
Not to be reproduced without permission of Medical News Today Visit our biology / biochemistry section for the latest news on this subject. "Shared developmental and evolutionary origins for neural basis of vocal–acoustic and pectoral–gestural signaling," Andrew Bass and Boris Chagnaud, PNAS, vol. 109, suppl 1 Abstract/summary. Please use one of the following formats to cite this article in your essay, paper or report:

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MacGill, Markus. "Fish brains gave us our hand gestures." Medical News Today. MediLexicon, Intl., 24 Jul. 2013. Web.
24 Jul. 2013. APA

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'Fish brains gave us our hand gestures'

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View the original article here