Semantic knowledge in Williams syndrome

Insights from comparing behavioural and brain processes in false memory tasks

Ching Fen Hsu*, Annette Karmiloff-Smith, Ovid Tzeng, Rung Tai Chin, Hua-Chen Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

12 Citations (Scopus)

Abstract

This study attempts to understand the relationship between use of context and semantic knowledge in the genetic disorder, Williams syndrome (WS). Earlier work had arrived at discrepant results, suggesting either near normal semantic priming [10], or unusual lexical organization [5] and atypical sentence integration [8] in this clinical group. To address these discrepant findings, we used two methodologies with an auditory false memory paradigm, and measured behavioural and neurophysiological (ERP) responses from three groups: children and adults with WS, Mental-Age matched normal children, and normal adults. While the behavioural data suggested that individuals with WS revealed a similar pattern of recognition as both groups of controls for words with semantic relatedness, their neurophysiological correlates suggested a different pattern. Our findings indicate that WS proficient compensatory behaviour camouflages a deviant neural pathway in the use of contextual cues. Our results also point to neurological changes during typical development, since typically developing children showed a distinctive pattern from our adult participants. Overall, our findings suggest that semantic organization develops slowly over typical development, and atypically in the Williams syndrome.

Original languageEnglish
Title of host publication2007 IEEE 6th International Conference on Development and Learning, ICDL
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages48-52
Number of pages5
ISBN (Print)1424411165, 9781424411160
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 IEEE 6th International Conference on Development and Learning, ICDL - London, United Kingdom
Duration: 11 Jul 200713 Jul 2007

Publication series

NameIEEE International Conference on Development and Learning
PublisherIEEE

Other

Other2007 IEEE 6th International Conference on Development and Learning, ICDL
CountryUnited Kingdom
CityLondon
Period11/07/0713/07/07

Keywords

  • Context use
  • Event-related potentials
  • False memory
  • Semantic knowledge
  • Williams syndrome

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