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1
The role of language proficiency and linguistic distance in cross-linguistic treatment effects in aphasia
Abstract: Current findings from intervention in bilingual aphasia are inconclusive regarding the extent to which levels of language proficiency and degree of linguistic distance between treated and non-treated languages influence cross-language generalisation and changes in levels of language activation and inhibition following treatment. In this study we enrolled a 65-year-old multilingual speaker with aphasia and administered treatment in his L1, Dutch. We assessed pre- and post-treatment performance for 7 of his languages, 5 of high proficiency and 2 of lower proficiency. We asked whether treatment in L1 would generalise to his other languages or increase interference among them. Forty hours of treatment were completed over the course of five weeks. Each language was tested three times at pre-treatment and at post-treatment. Testing included measures of narrative production, answering questions, picture description and question generation. Dependent measures examined language efficiency, defined as Correct Information Units/min. as well as language mixing, defined as proportion of code-mixed whole words. We found that our participant’s improved efficiency in Dutch was mirrored by parallel improvement in the four languages of high proficiency, English, German, Italian, and French. In contrast, in his languages of lower proficiency, Norwegian and Spanish, improved efficiency was limited. An increase in code-mixing was noted in Spanish, but not in Norwegian. We interpret the increased code-mixing in Spanish as indication of heightened inhibition following improvement in a language of close linguistic proximity, Italian. We conclude that an interaction of language proficiency and linguistic similarity affects cross-language generalisation following intervention in multilingual aphasia.
Keyword: Article
URL: http://www.ncbi.nlm.nih.gov/pubmed/29969313
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6169517/
https://doi.org/10.1080/02699206.2018.1435723
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2
Asymmetric inhibitory treatment effects in multilingual aphasia
In: Cognitive neuropsychology. - Abingdon : Routledge, Taylor & Francis Group 30 (2014) 7, 564-577
OLC Linguistik
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3
Idiom properties influencing idiom production in younger and older adults
In: The mental lexicon. - Amsterdam [u.a.] : John Benjamins Publishing Company 9 (2014) 2, 294-315
OLC Linguistik
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4
Language disorders in multilingual and multicultural populations
In: Annual review of applied linguistics. - Cambridge, Mass. [u.a.] : Univ. Press 33 (2013), 128-161
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5
Asymmetric inhibitory treatment effects in multilingual aphasia
In: Cognitive neuropsychology. - Abingdon : Routledge, Taylor & Francis Group 30 (2013) 7, 564-577
OLC Linguistik
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6
Language Disorders in Multilingual and Multicultural Populations
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7
Effects of language proficiency and language of the environment on aphasia therapy in a multilingual
In: Journal of neurolinguistics. - Orlando, Fla. : Elsevier 25 (2012) 6, 538-551
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8
Age-related differences in idiom production in adulthood
In: Clinical linguistics & phonetics. - London : Informa Healthcare 25 (2011) 10, 899-912
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9
Effects of language proficiency and language of the environment on aphasia therapy in a multilingual
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10
Language therapy effects on the treated and untreated languages of a multilingual person with aphasia
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11
The development of locative comprehension in Spanish
In: Journal of child language. - Cambridge [u.a.] : Cambridge Univ. Press 12 (1985) 1, 109-123
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