Communicative deficits in agenesis of the corpus callosum: Nonliteral language and affective prosody
Abstract
While some individuals with agenesis of the corpus callosum can perform normally on standardized intelligence tests, clinical observations suggest that they nevertheless have deficits in the domains of fluid and social intelligence. Particularly important for social competence is adequate understanding and use of paralinguistic information. This study examined the impact of callosal absence on the processing of pragmatic and paralinguistic information. Young adult males with agenesis of the corpus callosum (ACC) were evaluated in the areas of nonliteral language comprehension, proverb recognition and interpretation, and perception of affective prosody. Ten ACC individuals with normal Wechsler IQ were compared to 14 sex, age, and IQ matched normal controls. The Formulaic and Novel Language Comprehension Test (FANL-C), Gorham Proverbs Test, and LA Prosody Test were administered. ACC subjects exhibited significant impairment on the nonliteral items of the FANL-C, but no significant difference from controls in comprehension of literal items. ACC subjects also exhibited significant deficits in both self-generated interpretation and recognition of proverb meaning, and in recognition of affective prosody. These results demonstrate that normally intelligent individuals with ACC are impaired in the understanding of nonliteral language and emotional-prosodic cues that are important in social communication. In all three tests, the performance of individuals with ACC was similar to patients with right hemisphere brain damage. Thus, persons with ACC appear to lack interhemispheric integration of critical aspects of language processed by the right hemisphere.
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Patients with agenesis of corpus callosum show difficulties in language and social communication, and decreased volume of the corpus callosum has been found in ASD.
“Patients with agenesis of corpus callosum show difficulties in language and social communication [45, 276, 357], and decreased volume of the corpus callosum has been found in ASD (see meta-analysis in [114]).”
From Autism spectrum disorder: neuropathology and animal models (2017) · cites this paper as [276]
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- Authors
- Paul, L. K., Van Lancker-Sidtis, D., Schieffer, B., Dietrich, R., & Brown, W. S.
- Affiliations
- University of California, Irvine (US)
- University of California, Los Angeles (US)
- Corresponding author
- Brown, Warren S
- Venue
- Brain and Language
- Publisher
- Elsevier BV
- Published
- 2003-05
- Volume
- 85
- Issue
- 2
- Pages
- 313-324
- ISSN
- 0093-934X (ISSN-L)
- OpenAlex
- W2063220583
- Cited by
- 171
- References
- 86
- Citations by year
- 2026: 5 · 2025: 3 · 2024: 10 · 2023: 8 · 2022: 8 · 2021: 12 · 2020: 5 · 2019: 11 · 2018: 6 · 2017: 10 · 2016: 9 · 2015: 1 · 2014: 10 · 2013: 8 · 2012: 12
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain and Language (publishedVersion)
- PubMed (publishedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- Funders
- American Psychological Association
- National Institutes of Health (1r15hd033118-01a1)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD33118)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hemispheric Asymmetry in Neuroscience
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
- Social Sciences › Psychology › Developmental and Educational Psychology › Language Development and Disorders
- Keywords
- agenesis of the corpus callosum, emotional prosody, paralinguistic cues, proverbs, hemispheric integration, right hemisphere language, social communication, prosody perception
- MeSH terms
- Adolescent, Adult, Affect, Communication Disorders, Humans, Language, Functional Laterality, Male, Speech, Wechsler Scales, Metaphor, Agenesis of Corpus Callosum
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