Until recently, there has been little evidence regarding how and when infants begin to integrate words into an inter-connected lexical-semantic system. Recent electrophysiological studies show that lexical-semantic system (activation of related words such as cat-horse) develops together with vocabulary during the second year of life in monolingual infants (Rämä et al., 2013; Rämä et al., 2018). Some evidence shows that lexical-semantic organization develops later in bilingual than in monolingual infants. Also, there is mixed evidence as to whether lexical-semantic activation occurs similarly in dominant and non-dominant languages in bilingual language learners (e.g., Sirri & Rämä, 2019). In my talk, I will present results regarding neurophysiological mechanisms underlying lexical-semantic development in monolingual and bilingual infants. I will also describe our recent findings on the effect of speaker familiarity on processing of word meanings.
References
Rämä, P., Sirri, L., & Serres, J. (2013). Development of lexical–semantic language system: N400 priming effect for spoken words in 18-and 24-month old children. Brain and language, 125(1), 1-10.
Rämä, P., Sirri, L., & Goyet, L. (2018). Event-related potentials associated with cognitive mechanisms underlying lexical-semantic processing in monolingual and bilingual 18-month-old children. Journal of Neurolinguistics, 47, 123-130.
Sirri, L., & Rämä, P. (2019). Similar and distinct neural mechanisms underlying semantic priming in the languages of the French–Spanish bilingual children. Bilingualism: Language and Cognition, 22(1), 93-102.
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