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Electrophysiological evidence for cross-language interference in foreign-language attrition

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Mickan,  Anne
Donders Institute for Brain, Cognition and Behaviour, External Organizations;
Neurobiology of Language Department, MPI for Psycholinguistics, Max Planck Society;
International Max Planck Research School for Language Sciences, MPI for Psycholinguistics, Max Planck Society;

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McQueen,  James M.
Donders Institute for Brain, Cognition and Behaviour, External Organizations;
Research Associates, MPI for Psycholinguistics, Max Planck Society;

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Citation

Mickan, A., McQueen, J. M., Valentini, B., Piai, V., & Lemhöfer, K. (2021). Electrophysiological evidence for cross-language interference in foreign-language attrition. Neuropsychologia, 155: 107795. doi:10.1016/j.neuropsychologia.2021.107795.


Cite as: http://hdl.handle.net/21.11116/0000-0008-04AF-F
Abstract
Foreign language attrition (FLA) appears to be driven by interference from other, more recently-used languages (Mickan et al., 2020). Here we tracked these interference dynamics electrophysiologically to further our understanding of the underlying processes. Twenty-seven Dutch native speakers learned 70 new Italian words over two days. On a third day, EEG was recorded as they performed naming tasks on half of these words in English and, finally, as their memory for all the Italian words was tested in a picture-naming task. Replicating Mickan et al., recall was slower and tended to be less complete for Italian words that were interfered with (i.e., named in English) than for words that were not. These behavioral interference effects were accompanied by an enhanced frontal N2 and a decreased late positivity (LPC) for interfered compared to not-interfered items. Moreover, interfered items elicited more theta power. We also found an increased N2 during the interference phase for items that participants were later slower to retrieve in Italian. We interpret the N2 and theta effects as markers of interference, in line with the idea that Italian retrieval at final test is hampered by competition from recently practiced English translations. The LPC, in turn, reflects the consequences of interference: the reduced accessibility of interfered Italian labels. Finally, that retrieval ease at final test was related to the degree of interference during previous English retrieval shows that FLA is already set in motion during the interference phase, and hence can be the direct consequence of using other languages.