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Communication Sciences and Disorders Commons™
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Full-Text Articles in Communication Sciences and Disorders
Cognitive And Neurobiological Degeneration Of The Mental Lexicon In Primary Progressive Aphasia, Jet M. J. Vonk
Cognitive And Neurobiological Degeneration Of The Mental Lexicon In Primary Progressive Aphasia, Jet M. J. Vonk
Dissertations, Theses, and Capstone Projects
The ease with which we use the thousands of words in our vocabulary stands in stark contrast to our difficulty establishing how they are organized in our mind and brain. The breakdown of language due to cortical atrophy in primary progressive aphasia (PPA) creates conditions to study this organization at a cognitive and neurobiological level in that the three variants of this disease, namely non-fluent, logopenic, and semantic PPA, each bear their own signature of language-specific decline and cortical atrophy. As the impaired regions in each variant are linked to different lexical and semantic attributes of words, lexical decision performance …
Executive Control Mechanisms In Bilingualism: Beyond Speed Of Processing, Klara Marton, Mira Goral, Luca Campanelli, Jungmee Yoon, Loraine K. Obler
Executive Control Mechanisms In Bilingualism: Beyond Speed Of Processing, Klara Marton, Mira Goral, Luca Campanelli, Jungmee Yoon, Loraine K. Obler
Publications and Research
The question of interest in this study was whether bilingual individuals show superior executive control compared to monolingual participants. Findings are mixed, with studies showing advantage, disadvantage, or no difference between bilingual and monolingual speakers. In this study, we used different experimental conditions to examine implicit learning, resistance to interference, monitoring, and switching, independently. In addition, we matched our monolingual and bilingual participants on baseline response time. Bilingual participants demonstrated faster implicit learning, greater resistance to interference, more efficient switching compared to monolingual participants. The groups did not differ in monitoring. In conclusion, depending on task complexity and on the …
Phonetic Complexity Affects Children’S Mandarin Tone Production Accuracy In Disyllabic Words: A Perceptual Study, Puisan Wong, Winifred Strange
Phonetic Complexity Affects Children’S Mandarin Tone Production Accuracy In Disyllabic Words: A Perceptual Study, Puisan Wong, Winifred Strange
Publications and Research
This is the first study to examine the effect of phonetic contexts on children’s lexical tone production. Mandarin tones in disyllabic words produced by forty-four 2- to 6-year-old children and twelve mothers were low-pass filtered to eliminate lexical information. Native Mandarin speaking adults categorized the tones based on the pitch information in the filtered stimuli. All mothers’ tones were categorized with ceiling accuracy. Counter to the findings in most previous studies on children’s tone acquisition and the prevailing assumption in models of speech development that children acquire suprasegmental features much earlier than segmental features, this study found that children as …