Age of acquisition modulates the amplitude of the P300 component in spoken word recognition

Marie Josèphe Tainturier*, Jakke Tamminen, Guillaume Thierry

*Corresponding author for this work

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Words acquired earlier in life are easier to process in adulthood than words acquired later; this is known as the age of acquisition (AoA) effect. The goal of this study was to establish whether the P300 component of event-related potentials (ERPs) is sensitive to AoA. Early-acquired words (12.5%), late-acquired words (12.5%) and pseudo-words (75%) were presented in an auditory lexical decision task. The two sets of words were matched for length, word type, concreteness, imageability and, crucially, word frequency. Early-acquired words were recognised faster and more accurately than late-acquired words. In addition, AoA modulated ERP activity in centroparietal electrode sites, with early-acquired words eliciting a larger positivity (P300) than late-acquired words. This is the first study to demonstrate an ERP correlate of AoA effects. An important implication of our findings is that AoA may need to be controlled in ERP studies of lexical processing, especially in designs in which it is likely to be a confound (e.g., studies of lexical category effects).

Original languageEnglish
Pages (from-to)17-22
Number of pages6
JournalNeuroscience Letters
Volume379
Issue number1
DOIs
Publication statusPublished - 29 Apr 2005
Externally publishedYes

Keywords

  • Age of acquisition
  • Auditory
  • Electrophysiology
  • ERP
  • Evoked response potentials
  • Lexical decision
  • Oddball paradigm
  • P300
  • Speech
  • Word frequency
  • Word recognition

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