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Deaf sign language users pick up faster on body language

Date:
January 16, 2012
Source:
University of California - Davis
Summary:
Deaf people who use sign language are quicker at recognizing and interpreting body language than hearing non-signers, according to new research.

Deaf people who use sign language are quicker at recognizing and interpreting body language than hearing non-signers, according to new research from investigators at UC Davis and UC Irvine.

The work suggests that deaf people may be especially adept at picking up on subtle visual traits in the actions of others, an ability that could be useful for some sensitive jobs, such as airport screening.

"There are a lot of anecdotes about deaf people being better able to pick up on body language, but this is the first evidence of that," said David Corina, professor in the UC Davis Department of Linguistics and Center for Mind and Brain.

Corina and graduate student Michael Grosvald, now a postdoctoral researcher at UC Irvine, measured the response times of both deaf and hearing people to a series of video clips showing people making American Sign Language signs or "non-language" gestures, such as stroking the chin. Their work was published online Dec. 6 in the journal Cognition.

"We expected that deaf people would recognize sign language faster than hearing people, as the deaf people know and use sign language daily, but the real surprise was that deaf people also were about 100 milliseconds faster at recognizing non-language gestures than were hearing people," Corina said.

This work is important because it suggests that the human ability for communication is modifiable and is not limited to speech, Corina said. Deaf people show us that language can be expressed by the hands and be perceived through the visual system. When this happens, deaf signers get the added benefit of being able to recognize non-language actions better than hearing people who do not know a sign language, Corina said.

The study supports the idea that sign language is based on a modification of the system that all humans use to recognize gestures and body language, rather than working through a completely different system, Corina said.

The research was supported by grants from the National Institutes of Health and National Science Foundation.


Story Source:

The above story is based on materials provided by University of California - Davis. Note: Materials may be edited for content and length.


Journal Reference:

  1. David P. Corina, Michael Grosvald. Exploring perceptual processing of ASL and human actions: Effects of inversion and repetition priming. Cognition, 2011; DOI: 10.1016/j.cognition.2011.10.011

Cite This Page:

University of California - Davis. "Deaf sign language users pick up faster on body language." ScienceDaily. ScienceDaily, 16 January 2012. <www.sciencedaily.com/releases/2012/01/120112142243.htm>.
University of California - Davis. (2012, January 16). Deaf sign language users pick up faster on body language. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2012/01/120112142243.htm
University of California - Davis. "Deaf sign language users pick up faster on body language." ScienceDaily. www.sciencedaily.com/releases/2012/01/120112142243.htm (accessed July 29, 2014).

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