Issues and Principles in Service Delivery to Communicatively Impaired Minority Bilingual Adults in Neurorehabilitation

Demographic and epidemiological trends coupled with health-care needs in minority populations highlight the imperative need to develop effective, culturally appropriate clinical approaches for minority adults with communication impairments. The steady increase in linguistic and cultural diversity in the country includes a large number of bilingual adults, which is estimated to continue. Because strokes are quite prevalent in racial/ethnic minorities, the number of bilingual adults with acquired communication disorders will similarly increase. However, members of minority groups presently confront disparities in health-care services compared with the general population that translates into reduced health outcomes. This article discusses the current clinical needs and complexities in service delivery to communicatively impaired minority adults, with a special focus on bilingual adults with aphasia.

from Seminars in Speech and Language

Do French–English Bilingual Children Gesture More Than Monolingual Children?

Abstract Previous studies have shown that bilingual adults use more gestures than English monolinguals. Because no study has compared the gestures of bilinguals and monolinguals in both languages, the high gesture rate could be due to transfer from a high gesture language or could result from the use of gesture to aid in linguistic access. In this study we tried to distinguish between those causes by comparing the gesture rate of 10 French–English bilingual preschoolers with both 10 French and 10 English monolinguals. All were between 4 and 6 years of age. The children were asked to watch a cartoon and tell the story back. The results showed the bilingual children gestured more than either group of monolinguals and at the same rate in both French and English. These results suggest that that the bilinguals were not gesturing because they were transferring the high gesture rate from one language to another. We argue that bilinguals might gesture more than monolinguals to help formulate their spoken message.

from the Journal of Psycholinguistic Research

Bilingual aphasia and language control: A follow-up fMRI and intrinsic connectivity study

In a world that is becoming more multilingual, bilingual aphasia is a clinical problem with a major clinical impact. However, at present we lack causal explanations of the many features of recovery patterns and there is no consensus about the language in which the patient should receive speech therapy. Further advance requires an understanding of the dynamics of recovery. In a novel longitudinal, single-case study, we combine fMRI and dynamic causal modeling to examine the effects of specific language treatment for picture naming on the representation and control of language areas during the course of recovery. Improved performance in the treated language was associated with increased activation in language areas. Consistent with theoretical expectations, causal modeling indicated increased connectedness of the control and language networks for the treated language. This functional approach holds great promise for investigating recovery patterns and the effects of specific language treatment in bilingual aphasic patients.

from Brain and Language

Bilingualism reduces native-language interference during novel-word learning.

The goal of the present work was to examine the effects of bilingualism on adults’ ability to resolve cross-linguistic inconsistencies in orthography-to-phonology mappings during novel-word learning. English monolinguals and English–Spanish bilinguals learned artificially constructed novel words that overlapped with English orthographically but diverged from English phonologically. Native-language orthographic information presented during learning interfered with encoding of novel words in monolinguals but not in bilinguals. In general, bilinguals outperformed monolinguals on the word-learning task. These findings indicate that knowledge of 2 languages facilitates word learning and shields English–Spanish bilinguals from interference associated with cross-linguistic inconsistencies in letter-to-phoneme mappings. (PsycINFO Database Record (c) 2009 APA, all rights reserved)

from Journal of Experimental Psychology: Learning, Memory, and Cognition

Should I stay or should I switch? A cost–benefit analysis of voluntary language switching in young and aging bilinguals.

Bilinguals spontaneously switch languages in conversation even though laboratory studies reveal robust cued language switching costs. The authors investigated how voluntary-switching costs might differ when switches are voluntary. Younger (Experiments 1–2) and older (Experiment 3) Spanish–English bilinguals named pictures in 3 conditions: (a) dominant-language only, (b) nondominant-language only, and (c) using “whatever language comes to mind” (in Experiment 2, “using each language about half the time”). Most bilinguals, particularly balanced bilinguals, voluntarily mixed languages even though switching was costly. Unlike with cued switching, voluntary switching sometimes facilitated responses, switch costs were not greater for the dominant language, and age effects on language mixing and switching were limited. This suggests that the freedom to mix languages voluntarily allows unbalanced and older bilinguals to function more like balanced and younger bilinguals. Voluntary switch costs reveal an expanded role for inhibitory control in bilingual language production and imply a mandatory separation by language in bilingual lexical selection. (PsycINFO Database Record (c) 2009 APA, all rights reserved)

from Journal of Experimental Psychology: Learning, Memory, and Cognition

Who’s using who? The fieldworker as documenter and tool of language revalorization

The social positioning of fieldworkers affects the linguistic practices of the people with whom they interact, along with the grammatical structure of speech produced in their presence or for their recording equipment. Before arriving at my fieldwork site, I had carefully designed strategies for locating myself within certain social networks such that speakers would produce the code-switched styles central to my planned investigation. Unfortunately, these strategies failed. An examination of five newspaper and magazine articles profiling my research gives insight into local perceptions of my social role and ideological affiliations, and their effect on the linguistic styles available for structural analysis.

from Language & Communication

Bilingual lexical access in context: Evidence from eye movements during reading.

Current models of bilingualism (e.g., BIA+) posit that lexical access during reading is not language selective. However, much of this research is based on the comprehension of words in isolation. The authors investigated whether nonselective access occurs for words embedded in biased sentence contexts (e.g., A. I. Schwartz & J. F. Kroll, 2006). Eye movements were recorded as French–English bilinguals read English sentences containing cognates (e.g., piano), interlingual homographs (e.g., coin, meaning corner in French), or matched control words. Sentences provided a low or high semantic constraint for target-language meanings. Both early-stage comprehension measures (e.g., first fixation duration, gaze duration, and skipping) and late-stage comprehension measures (e.g., go-past time and total reading time) showed significant cognate facilitation and interlingual homograph interference for low-constraint sentences. For high-constraint sentences, however, only early-stage comprehension measures were consistent with nonselective access. There was no evidence of cognate facilitation or interlingual homograph interference for late-stage comprehension measures. Thus, nonselective bilingual lexical access at early stages of comprehension is rapidly resolved in semantically biased contexts at later stages of comprehension. (PsycINFO Database Record (c) 2009 APA, all rights reserved)

from the Journal of Experimental Psychology: Learning, Memory, and Cognition

Listening with an Accent: Speech Perception in a Second Language by Late Bilinguals

Abstract The goal of the present study was to examine functioning of late bilinguals in their second language. Specifically, we asked how native and non-native Hebrew speaking listeners perceive accented and native-accented Hebrew speech. To achieve this goal we used the gating paradigm to explore the ability of healthy late fluent bilinguals (Russian and Arabic native speakers) to recognize words in L2 (Hebrew) when they were spoken in an accent like their own, a native accent (Hebrew speakers), or another foreign accent (American accent).

from the Journal of Psycholinguistic Research

Language switching in the bilingual brain: What’s next?

Recent work using functional neuroimaging with early bilinguals has found little evidence for separate neural systems for each language during picture naming (Hernandez, A. E., Dapretto, M., Mazziotta, J., & Bookheimer, S. (2001). Language switching and language representation in Spanish–English bilinguals: An fMRI study. Neuroimage, 14, 510–520). However, switching between languages in early bilinguals during picture naming shows increased activity in the Dorsolateral Prefrontal Cortex (DLPFC) suggesting the importance of maintaining goal related information in order to bias subsequent response selection (Braver, T. S., Barch, D. M., Kelley, W. M., Buckner, R. L., Cohen, N. J., Miezin, F. M., et al. (2001). Direct comparison of prefrontal cortex regions engaged by working and long-term memory tasks. Neuroimage, 14, 48–59; Cohen, J. D., Braver, T. S., & O’Reilly, R. C. (1996). A computational approach to prefrontal cortex, cognitive control and schizophrenia: Recent developments and current challenges. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences, 351, 1515–1527; O’Reilly, R. C., Braver, T. S., & Cohen, J. D. (1999). A biologically based computational model of working memory. In E. Akira Miyake, E. Priti Shah & et al. (Eds.), Models of working memory: Mechanisms of active maintenance and executive control. (pp. 375–411): New York, NY, USA). The current study set out to test early bilinguals using a picture naming paradigm. Results revealed increased activity in the DLPFC and the superior parietal lobule during language switching compared to naming of pictures in a single language. Increased activity was also observed between early learned first and second languages. The results from single language conditions revealed differences in areas devoted to language processing such as the Superior Temporal Gyrus. However, increased activity in brain areas devoted to memory, somatosensory processing and emotion were also observed. Taken together these results replicate previous studies on language switching. They also extend studies on the neural bases of bilingualism by suggesting that early bilinguals’ representation of the two languages may be mediated by neural systems not typically associated with language. The article ends by considering future directions in understanding the brain bases of language switching and single language processing in bilinguals.

from Brain and Language

Effects of ‘Context-Optimization’ on the acquisition of grammatical case in children with specific language impairment: an experimental evaluation in the classroom

Conclusions: A critical analysis of the data reveals two important implications for future interventions: (1) the reduction of language material to ensure proper use of gender during therapy sequences; and (2) the adaptation of therapeutic steps to the learning tempo of the pupils.

from the International Journal of Language and Communication Disorders

Language profiles of monolingual and bilingual Finnish preschool children at risk for language impairment

Conclusions: Although a slight general cost of bilingualism was found in the language profile of the six-year olds in this study, a bilingual background was not associated with more severe language problems in the LI Risk Group. Thus, there would seem to be no need to shield language-impaired children from opportunities for dual language learning.

from the International Journal of Language and Communication Disorders

Dual language use in sign-speech bimodal bilinguals: fNIRS brain-imaging evidence

The brain basis of bilinguals’ ability to use two languages at the same time has been a hotly debated topic. On the one hand, behavioral research has suggested that bilingual dual language use involves complex and highly principled linguistic processes. On the other hand, brain-imaging research has revealed that bilingual language switching involves neural activations in brain areas dedicated to general executive functions not specific to language processing, such as general task maintenance. Here we address the involvement of language-specific versus cognitive-general brain mechanisms for bilingual language processing. We study a unique population, bimodal bilinguals proficient in signed and spoken languages, and we use an innovative brain-imaging technology, functional Near-Infrared Spectroscopy (fNIRS; Hitachi ETG-4000). Like fMRI, the fNIRS technology measures hemodynamic change, but it is also advanced in permitting movement for unconstrained speech and sign production. Participant groups included (i) hearing ASL–English bilinguals, (ii) ASL monolinguals, and (iii) English monolinguals. Imaging tasks included picture naming in “Monolingual mode” (using one language at a time) and in “Bilingual mode” (using both languages either simultaneously or in rapid alternation). Behavioral results revealed that accuracy was similar among groups and conditions. By contrast, neuroimaging results revealed that bilinguals in Bilingual mode showed greater signal intensity within posterior temporal regions (“Wernicke’s area”) than in Monolingual mode. Significance: Bilinguals’ ability to use two languages effortlessly and without confusion involves the use of language-specific posterior temporal brain regions. This research with both fNIRS and bimodal bilinguals sheds new light on the extent and variability of brain tissue that underlies language processing, and addresses the tantalizing questions of how language modality, sign and speech, impact language representation in the 7brain.

from Brain and Language

Effects of ‘Context-Optimization’ on the acquisition of grammatical case in children with specific language impairment: an experimental evaluation in the classroom

from the International Journal of Language and Communication Disorders

Conclusions: A critical analysis of the data reveals two important implications for future interventions: (1) the reduction of language material to ensure proper use of gender during therapy sequences; and (2) the adaptation of therapeutic steps to the learning tempo of the pupils.

Evaluative expression in deaf children’s written narratives

from the International Journal of Language and Communication Disorders

Background: Deaf children vary in the use of and proficiency in signed language. The majority of studies on writing skills of children who are deaf did not assess deaf children’s proficiency in signed language and/or grouped together deaf children with varying sign language skills.

Aims: Adopting a bimodal bilingual perspective, we examined evaluative expression, an important narrative tool in both oral/written languages and signed languages, in narratives written in Dutch by deaf children who are proficient in Sign Language of the Netherlands (SLN) and deaf children who are low-proficient in SLN, and hearing monolingual and bilingual children. We hypothesized that deaf children who are proficient in signed language use their knowledge of evaluative expression in signed language to enrich their narratives in written Dutch, and more so than deaf children who are low-proficient in signed language and hearing monolingual and bilingual children.

Methods & Procedures: We examined the use of eight different evaluative devices in narratives written by deaf proficiently and low-proficiently signing children, and hearing monolingual and bilingual children. Narratives were also examined for morpho-syntactic errors and use of complex sentences.

Outcomes & Results: The results show that proficiently signing deaf children’s narratives contain more evaluative devices that enrich the referential structure of the narrative than narratives of low-proficiently signing deaf children, and hearing bilingual and monolingual children.

Conclusions & Implications: We propose that proficiently signing deaf children use their knowledge of SLN to convey evaluation in their written narratives, and thus have an advantage in enriching their narratives. This study also shows that in order to gain insight into deaf people’s writing, it is important to take variations in sign language proficiency into account.

Language profiles of monolingual and bilingual Finnish preschool children at risk for language impairment

from the International Journal of Language and Communication Disorders

Background: A large proportion of children are exposed to more than one language, yet research on simultaneous bilingualism has been relatively sparse. Traditionally, there has been concern that bilingualism may aggravate language difficulties of children with language impairment. However, recent studies have not found specific language impairment (SLI) or language-related problems to be increased by bilingualism.

Aims: The topic of bilingualism and its effects has high actuality in Finland, where increasing numbers of children in the country’s 6% Swedish-speaking minority grow up in bilingual families, where one parent’s primary language is Swedish and the other’s Finnish. The present study aimed at exploring the influence of such bilingualism on the language profiles of children from this population at risk for language impairment (LI).

Methods & Procedures: Participants were recruited from a language screening of 339 children from kindergartens with instruction only in Swedish, from the Swedish-speaking parts of Finland. Of these children, 33 (9.7%) were defined as a Risk Group for LI, whereas 48 non-risk children were randomly selected to form a control group. When subdividing the children according to home language, 35 were found to be monolingual, Swedish-speaking, and 46 were Swedish-Finnish bilingual. The children underwent neuropsychological assessment during their preschool year. Assessment methods included subtests from the Wechsler Primary and Preschool Scale of Intelligence – Revised and the NEPSY Developmental Neuropsychological Assessment.

Outcomes & Results: A repeated-measures multiple analysis of covariance (MANCOVA) showed a significant effect of risk of LI on the NEPSY language scores. The effect of home language was not significant and there was no interaction between home language and risk for LI. Non-verbal IQ was controlled for. Across groups, bilingual children scored lower than monolingual children only on measures of vocabulary and sentence repetition.

Conclusions: Although a slight general cost of bilingualism was found in the language profile of the six-year olds in this study, a bilingual background was not associated with more severe language problems in the LI Risk Group. Thus, there would seem to be no need to shield language-impaired children from opportunities for dual language learning.