Simultaneous interpreting is generally assumed to be particularly demanding with respect to cognitive resources such as attention and working memory, which are thought to gradually increase with professional practice. Experimental data to corroborate this assumption is still rather sparse, however. Here we report an in-depth investigation of working memory capacity among 21 professional interpreters (experts), 18 second-year interpreting students (novices) and two control groups (20 multilinguals and 20 students). Tests involved either short-term retention alone; short-term retention and processing in a recall task with articulatory suppression, a listening span task, and a category and rhyme probe task; or attention alone in a unilingual and bilingual Stroop test. No between-group differences in simple span tasks and the Stroop test were found. Significant group effects were observed in free recall with articulatory suppression, in the category probe task and in the listening span task. The best performance was always produced by the novice interpreters rather than by the experts. These findings are discussed in relation to (a) the novice–expert distinction and the role of working memory in the development of interpreting skills, and (b) the nature of the task and possible strategies involved.

Abstract:Research on second language acquisition and bilingual development strongly suggests that when a previously monolingual speaker becomes multilingual, the different languages do not exist in isolation: they are closely linked, dependent on each other, and there is constant interaction between these different knowledge systems. Theoretical frameworks of bilingual development acknowledge this insofar as they usually draw heavily on evidence of how the native language influences subsequent languages, and how and to what degree this influence can eventually be overcome.The fact that such crosslinguistic transfer is not a one-way street, and that the native language is similarly influenced by later learned languages, on the other hand, is often disregarded. We review the evidence on how later learned languages can re-shape the L1 in the immediate and the longer term and demonstrate how such phenomena may be used to inform, challenge and validate theoretical approaches of bilingual development.Author Comments: This is the final version of the Epistemological paper which has previously been submitted by Barbara Kopke. As she is currently away the editors requested that I make a new submission.

There is a large body of research on discourse production in Alzheimer’s disease (AD). Some studies have focused on pause production, revealing that patients make extensive use of pauses during speech. This has been attributed to lexical retrieval difficulties, but pausing may also reflect other forms of cognitive impairment as it increases with cognitive load. The aim of the present study was to analyze autobiographical discourse impairment in AD from a broad perspective, looking at pausing behavior (frequency, duration, and location). Our first objective was to characterize discourse changes in mild cognitive impairment (MCI) due to AD. Our second objective was to determine the cognitive and neuroanatomical correlates of these changes. Fifteen patients with MCI due to AD and 15 matched cognitively normal controls underwent an ecological episodic memory task, a full neuropsychological assessment, and a 3D T1-weighted MRI scans. Autobiographical discourse collected from the ecological episodic memory task was recorded, transcribed, and analyzed, focusing on pausing. Intergroup comparisons showed that although patients did not produce more pauses than controls overall, they did make more between-utterance pauses. The number of these specific pauses was positively correlated with patients’ episodic memory performance. Furthermore, neuroimaging analysis showed that, in the patient group, their use was negatively correlated with frontopolar area (BA 10) grey matter density. This region may therefore play an important role in the planning of autobiographical discourse production. These findings demonstrate that pauses in early AD may reflect a compensatory mechanism for improving mental time travel and memory retrieval.

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