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Paralinguistic processing in children with callosal agenesis: emergence of neurolinguistic deficits

Brown, Warren S. and Symington, Melissa and VanLancker-Sidtis, Diana and Dietrich, Rosalind and Paul, Lynn K. (2005) Paralinguistic processing in children with callosal agenesis: emergence of neurolinguistic deficits. Brain and Language, 93 (2). pp. 135-139. ISSN 0093-934X. doi:10.1016/j.bandl.2004.09.003.

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Recent research revealed impaired processing of both nonliteral meaning and affective prosody in adults with agenesis of the corpus callosum (ACC) and normal intelligence. Since normal children have incomplete myelination of the corpus callosum, it was hypothesized that paralanguage deficits in children with ACC would be less apparent relative to their peers. The Familiar and Novel Language Comprehension Test (FANL-C) and Prosody Test were given to 18 children with ACC and normal intelligence and 17 controls matched for age (7-13 years), education, and IQ (83-122). When controlling for age, children with ACC were significantly poorer in comprehension of the precise meaning of both literal and nonliteral items on the FANL-C. Adults with ACC had previously been shown to have difficulty only on nonliteral items. The effect size for nonliteral comprehension in children with ACC was smaller than that seen in adults. There was only a trend for the child ACC group to perform worse on the recognition of affective prosody. Thus, while deficits in paralinguistic processing were apparent, children with ACC were not as clearly different from age peers as adults, and were equally deficient at comprehending literal and nonliteral expressions. The differences in results between adults and children with ACC are thought to reflect incomplete callosal development in normal children, and the importance of the corpus callosum in the early stages of the development of the ability to process literal language.

Item Type:Article
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URLURL TypeDescription
Brown, Warren S.0000-0001-6142-5588
Paul, Lynn K.0000-0002-3128-8313
Alternate Title:Paralinguistics in Children with ACC
Additional Information:© 2004 Elsevier. Accepted 16 September 2004, Available online 5 November 2004.
Subject Keywords:Corpus callosum; Agenesis of the corpus callosum; Nonliteral language; Idioms; Prosody; Child development
Issue or Number:2
Record Number:CaltechAUTHORS:20190425-124228672
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Official Citation:Warren S. Brown, Melissa Symingtion, Diana VanLancker-Sidtis, Rosalind Dietrich, Lynn K. Paul, Paralinguistic processing in children with callosal agenesis: Emergence of neurolinguistic deficits, Brain and Language, Volume 93, Issue 2, 2005, Pages 135-139, ISSN 0093-934X, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94973
Deposited By: Lynn Paul
Deposited On:20 May 2019 18:08
Last Modified:16 Nov 2021 17:09

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