Age Of Second Language Acquisition Research Articles

Associations of natural language switching with executive control in early bilinguals

AbstractThis study aimed at identifying linguistic factors that could contribute to understanding individual differences in executive control among bilinguals. Directionality and type of natural language switching, age of second language acquisition, and language proficiency were evaluated in a sample of 112 early bilingual adults. Participants performed several computerized tasks tapping into three dimensions of executive control: inhibition of interference, working memory updating, and shifting. Regression analyses showed that frequent switching to the second language was associated with more efficient executive processing, enhanced working memory updating processes, and better shifting ability. Moreover, higher frequency of unintended language switches was associated with lower interference control abilities. Frequency of language switching behavior was the principal predictor of executive control, beyond age of second language acquisition and language proficiency. Results suggest that frequent language switching is related to enhanced executive control, while the unintended switching of languages could be associated with low interference control.

Problematic Phonemes for Spanish-speakers’ Learners of English

When learning English, learners might face a challenging task in mastering pronunciation due to differences in both languages such as sound-to-letter correspondence, size of phoneme inventory, allophonic realization of sounds, place and manner of articulation, among others. Therefore, the purpose of this paper is to review both theoretical and research reports on the most problematic sounds for Spanish-speakers English language learners. Approaches to second language learners’ errors like Contrastive Analysis and Error Analysis although being criticized have contributed to identifying likely causes of errors and dealing with them whether anticipating them or providing appropriate feedback on them. Besides, first language interference and age of second language acquisition have been found as complicating factors in the English pronunciation learning process. Finally, some classroom activities have been reported as successful for facilitating English pronunciation in Spanish native speakers.

Retracted: The Effect of Bilingualism on Older Adults’ Inhibitory Control: A Meta-Analysis

The effect bilingualism has on older adults' inhibitory control has been extensively investigated, yet there is continued controversy regarding whether older adult bilinguals show superior inhibitory control compared with monolinguals. The objective of the current meta-analysis was to examine the reliability and magnitude of the bilingualism effect on older adults' inhibitory control as measured by the Simon and Stroop tasks. In addition, we examined whether individual characteristics moderate the bilingual advantage in inhibition, including age (young-old vs old-old), age of second language acquisition, immigrant status, language proficiency, and frequency of language use. A total of 22 samples for the Simon task and 14 samples for the Stroop task were derived from 28 published and unpublished articles (32 independent samples, with 4 of these samples using more than 1 task) and were analyzed in 2 separate meta-analyses. Analyses revealed a reliable effect of bilingualism on older adults' performance on the Simon (g = 0.60) and Stroop (g = 0.27) tasks. Interestingly, individual characteristics did not moderate the association between bilingualism and older adults' inhibitory control. The results suggest there is a bilingual advantage in inhibitory control for older bilinguals compared with older monolinguals, regardless of the individual characteristics previously thought to moderate this effect. Based on these findings, bilingualism may protect inhibitory control from normal cognitive decline with age.

Is there a bilingual advantage on interference-control tasks? A multiverse meta-analysis of global reaction time and interference cost.

A contentious issue in contemporary psycholinguistics is whether bilingualism enhances executive functions. Here, we report a meta-analysis of 80 studies (253 effect sizes) comparing performance of monolinguals and bilinguals on non-verbal interference-control tasks, while examining potential moderators of effects on two dependent variables (DVs): global reaction time (RT) and interference cost. We used a multiverse approach to determine how robust conclusions were to several dataset construction and analysis decisions. In our "preferred" analysis, using a broad definition of bilinguals and standard versions of interference-control tasks, there was a very small but significant bilingual advantage for global RT (g =.13), which became non-significant once corrected for publication bias. For interference cost, there was a very small but significant bilingual advantage (g =.11). Effects were not significantly moderated by task or participant age, but were moderated by an interaction between age of second language acquisition (AoA) and the DV. Unexpectedly, larger effect sizes for interference cost were observed for studies involving bilinguals with late as opposed to early AoA. The multiverse analysis produced results largely consistent with the preferred analysis, confirming our conclusion that evidence for a bilingual advantage on interference-control tasks is weak.

Language processing in a bilingual child

Objectives To review the language processing, 'central and linguistic processing,' in bilingual children. The age of second language acquisition, a factor which may impact language processing, was also reviewed. Data sources Medline databases (PubMed, Medscape, and Science Direct) using the terms 'bilingual' or 'bilingualism' with the word 'children' as the search criteria. The resulting materials available in the internet from 1980 to 2017 were further screened for the terms 'processing,' 'cognition,' or 'age of acquisition.' Study selection Our refined search included 124 articles and book's chapters out of which 83 met our selection criteria. Those data related to late bilingualism were excluded. Data extraction If the studies did not fulfill the inclusion criteria, they were excluded. Study quality assessment included whether ethical approval was gained, eligibility criteria specified, adequate information, and defined assessment measures were made. Data synthesis Significant data were collected. It was heterogeneous. Thus, a structured review was performed with the results tabulated. Conclusion An unresolved issue in bilingualism is how different languages are represented in the brain and which cognitive mechanisms are required to regulate their use. In learning a second language, the brain has to build on a neural network that enables the segregation of the new language from the native one. A bilingual child can create languages' activation and inhibitory links at the lexical and the morphological level and also can develop the ability to select a word and its syntactic characters correctly.

Bilingualism and speech recognition in silence and noise in adults.

To compare the ability to recognize sentences in silence and in noise in monolingual normal-hearing Brazilian Portuguese speakers, and bilingual speakers of Brazilian Portuguese and German, and bilingual speakers of Brazilian Portuguese and Italian, as well as to analyze the influence of age of second language acquisition on the performance of bilinguals. 87 normal-hearing individuals aged between 18 and 55 years participated of this research. They were categorized into: Control Group, composed by 30 monolingual Brazilian Portuguese speakers; German Research Group, 31 simultaneous bilingual native speakers of Portuguese and speakers of German as a second language and; Italian Research Group, consisting of 26 successive bilinguals, native speakers of Portuguese and speakers of Italian as a second language. The Sentence List Test in Brazilian Portuguese was used to measure their Sentence Recognition Thresholds in Silence and Noise. In silence, there were no statistically significant differences in performance when comparing the bilingual to the monolingual individuals, and when comparing the bilingual speakers among themselves. On the other hand, in noise, there was a significant difference between the bilingual groups and the monolingual one. However, there were no significant differences between the bilingual groups when their performance was compared. Bilingualism positively influenced the development of language and listening skills, which led the bilinguals to outperform in speech recognition in the presence of noise. Also, the period of a second language acquisition did not influence bilingual performance.

A domain-general monitoring account of language switching in recognition tasks: Evidence for adaptive control

Language switching experience is assumed to have an effect on domain-general control abilities in bilinguals, but previous studies on the relationship between these two variables have generated mixed results. The present study investigated the effects of bilingual experiences on the interaction between language switching and domain-general control. Thirty-two Dutch–French bilingual young adults executed a bilingual categorisation task to assess their language switching abilities and a Simon task to assess domain-general control. The results show that global response times on the Simon task were correlated to the forward switch cost (from L1 to L2); moreover, interestingly, the forward switch cost was found to be related to recent language exposure but not to the age of second language acquisition. We suggest a monitoring account of language switching to integrate the first finding with previous studies and we interpret the second finding as support for the adaptive control hypothesis.

Plasticity, Variability and Age in Second Language Acquisition and Bilingualism.

Much of what is known about the outcome of second language acquisition and bilingualism can be summarized in terms of inter-individual variability, plasticity and age. The present review looks at variability and plasticity with respect to their underlying sources, and at age as a modulating factor in variability and plasticity. In this context we consider critical period effects vs. bilingualism effects, early and late bilingualism, nativelike and non-nativelike L2 attainment, cognitive aging, individual differences in learning, and linguistic dominance in bilingualism. Non-uniformity is an inherent characteristic of both early and late bilingualism. This review shows how plasticity and age connect with biological and experiential sources of variability, and underscores the value of research that reveals and explains variability. In these ways the review suggests how plasticity, variability and age conspire to frame fundamental research issues in L2 acquisition and bilingualism, and provides points of reference for discussion of the present Frontiers in Psychology Research Topic.

Becoming a balanced, proficient bilingual: Predictions from age of acquisition & genetic background.

Genetic variants related to dopamine functioning (e.g., the ANKK1/TaqIa polymorphism within the DRD2 gene and the Val158Met polymorphism within the COMT gene) have previously been shown to predict cognitive flexibility and learning (e.g., Colzato et al., 2010; Stelzel et al., 2010). Additionally, researchers have found that these genetic variants may also predict second language learning (Mamiya et al., 2016), although this relationship may change across the lifespan (Sugiura et al., 2011). The current study examined the role of the ANKK1/TaqIa and Val158Met polymorphisms along with age of second language acquisition (AoA) in order to predict levels of bilingual proficiency in Spanish-English bilinguals. Results indicated a three-way interaction such that the relationship between the genetic variants and bilingual proficiency depended on AoA. At earlier AoAs, having the genetic variant associated with higher levels of subcortical dopamine (A1+) predicted the highest levels of bilingual proficiency. At later AoAs, individuals with the genetic variant associated with cortical dopamine levels that are balanced between stability and flexibility (Val/Met) predicted the highest levels of bilingual proficiency. These results fit with theories about the development of language as a subcortical process early in life and as a cortical process later in life (Hernandez & Li, 2007), as well as the importance of both stability and flexibility in bilingual language development (Green & Abutalebi, 2013). Finally, this study raises questions about the direction of causality between bilingualism and cognitive control, which is central to the debate over the "bilingual advantage."

Preferred argument structure in the narratives of Chinese-English bilinguals and their monolingual peers

Aims and Objectives: This paper aims to tease apart the roles of different factors that contribute to potential divergence between bilingual and monolingual speakers in the patterns of preferred argument structure (PAS) in spoken discourse. Methodology: Spoken narratives were elicited from two groups of Chinese-English bilinguals (early versus late) and their monolingual peers, using the wordless picture storybook, Frog, where are you? Data and Analysis: For each transcribed narrative, core arguments in the clauses are coded for grammatical role and information status. The data are then analyzed for conformity to four constraints that Du Bois introduced in his theory of PAS. Findings: The results revealed both similarities and differences in the PAS patterns in the narratives of the four participant groups. While the similarities provide support for the validity of the PAS theory, the differences were found to result from cross-linguistic influence, an age of second language acquisition effect, or a general effect of bilingualism. Originality: The innovative nature of this study lies in the following: (i) the examination of a new syntax–discourse interface phenomenon in bilingual development; and (ii) the intentional attempt to tease apart the effect of cross-linguistic influence and the effect of bilingualism itself on bilingual performance. Implications: Our findings suggest that it is necessary, and indeed empirically possible, to tease apart not only the effect of age of second language acquisition from the effect of cross-linguistic influence, but also these two effects from the general effect of bilingualism in bilingual development and use.

Effect of Age in Second Language Acquisition: A Critical Review from the Perspective of Critical Period Hypothesis and Ultimate Attainment

This article addresses the effect of age in Second Language Acquisition (SLA), posing the relative question that whether the Critical Period hypothesis (CPH) exists in Second Language (SL), and if existing, how it is associated duly with SLA. The justification of comparing the achievement of L1 and L2 learners on the basis of Ultimate Attainment (UA) in the establishment of Critical Period Hypothesis, is also discussed. In the methodology, secondary data analysis was used to answer of research questions. To achieve a reliable result from the wide range of secondary data primarily from journal articles, a systemic search has been adopted. In conclusion, compare and contrast was made with earlier studies to show the findings of the study and to scope future research.

Onset age of L2 acquisition influences language network in early and late Cantonese-Mandarin bilinguals

Early second language (L2) experience influences the neural organization of L2 in neuro-plastic terms. Previous studies tried to reveal these plastic effects of age of second language acquisition (AoA-L2) and proficiency-level in L2 (PL-L2) on the neural basis of language processing in bilinguals. Although different activation patterns have been observed during language processing in early and late bilinguals by task-fMRI, few studies reported the effect of AoA-L2 and high PL-L2 on language network at resting state. In this study, we acquired resting-state fMRI (R-fMRI) data from 10 Cantonese (L1)-Mandarin (L2) early bilinguals (acquired L2: 3years old) and 11 late bilinguals (acquired L2: 6years old), and analyzed their topological properties of language networks after controlling the language daily exposure and usage as well as PL in L1 and L2. We found that early bilinguals had significantly a higher clustering coefficient, global and local efficiency, but significantly lower characteristic path length compared to late bilinguals. Modular analysis indicated that compared to late bilinguals, early bilinguals showed significantly stronger intra-modular functional connectivity in the semantic and phonetic modules, stronger inter-modular functional connectivity between the semantic and phonetic modules as well as between the phonetic and syntactic modules. Differences in global and local parameters may reflect different patterns of neuro-plasticity respectively for early and late bilinguals. These results suggested that different L2 experience influences topological properties of language network, even if late bilinguals achieve high PL-L2. Our findings may provide a new perspective of neural mechanisms related to early and late bilinguals.

Camino, Base y Manera en bilingües de español y sueco: efectos de una segunda lengua en los patrones de expresión del movimiento de una primera lengua

This study addresses how Spanish-Swedish early and late bilinguals express motion events in their inherited language or first language: Spanish. We draw on the idea that the habitual conceptualization of events also underlies both L2 usage (Flecken et al., 2014: 51) and L1 usage in bilinguals (Bylund and Jarvis, 2011). Drawing both on studies about second language acquisition and bilingualism we aim to study how the typological patterns for motion encoding of the L2 (a satellite-framed language) may impact on motion encoding in the L1 (a verb-framed language), which the group under study has had but a reduced contact with while growing up in Sweden. Considering this fact and starting off from the assumption that an early age of break with the L1 environment has an impact on how motion events are described in an L1 (Bylund, 2009), we aim to outline the conceptualization of motion events of two groups of bilinguals, in all 31 subjects, and the different sorts of transfer phenomena that may affect their speech. Oral narratives produced by the bilinguals have been compared to two control groups of Spanish and Swedish monolinguals and then been examined in order to analyze their conflation patterns regarding Manner of motion, Path and Ground information. Our results have lead us finally to conclude that both the individuals’ age of second language acquisition and their length of residence in the L2 environment have affected their L1 conceptualization patterns

Language Mediated Concept Activation in Bilingual Memory Facilitates Cognitive Flexibility.

This is the first attempt of empirical investigation of language mediated concept activation (LMCA) in bilingual memory as a cognitive mechanism facilitating divergent thinking. Russian–English bilingual and Russian monolingual college students were tested on a battery of tests including among others Abbreviated Torrance Tests for Adults assessing divergent thinking traits and translingual priming (TLP) test assessing the LMCA. The latter was designed as a lexical decision priming test, in which a prime and a target were not related in Russian (language of testing), but were related through their translation equivalents in English (spoken only by bilinguals). Bilinguals outperformed their monolingual counterparts on divergent thinking trait of cognitive flexibility, and bilinguals’ performance on this trait could be explained by their TLP effect. Age of second language acquisition and proficiency in this language were found to relate to the TLP effect, and therefore were proposed to influence the directionality and strength of connections in bilingual memory.

Neka zapažanja o etnojezičkoj situaciji u dvojezičnim makedonsko-albanskim selima u regionu Prespa: fenomen Arvati

This paper provides an analysis of the language situation in the villages of the multi-ethnic Prespa region (Republic of Macedonia): Krani and Arvati. The language situation in these villages appears to be especially noteworthy in juxtaposition with the general language situations in Republic of Macedonia. Interestingly, the local bilingualism has no religion restrictions, so Orthodox Macedonians master Albanian language, which is unusual for other Macedonian regions. The most significant features of the Prespa language situation are the following: 1) a relatively high degree of linguistic competence of Macedonian informants in the Albanian language; 2) the young age of second language acquisition; 3) the use of the Albanian language as a primary means of communication within the village; 4) the absence of code-mixing in the narrative.

Language processing in bilingual aphasia: a new insight into the problem.

There is increasing evidence that a bilingual person should not be considered as two monolinguals in a single body, a view that has gradually been adopted in the diagnosis and treatment of bilingual aphasia. However, its investigation is complicated due to the large variety in possible language combinations, pre- and postmorbid language proficiencies, and age of second language acquisition. Furthermore, the tests and tasks used to assess linguistic capabilities differ in almost every study, hindering a direct comparison of their outcomes. Behavioral, electrophysiological, and neuroimaging data from healthy population show that the processing of second language domains (semantics, syntax, morphology) depends on factors such as age and method of acquisition, proficiency level and environment in which the second language was acquired. A number of single and multiple case reports that rely on behavioral testing of bilingual aphasics replicate these results. Additionally, they show that the patient's performance depends on the size and location of the lesion, as well as language typology and morphological characteristics. Furthermore, the impairment and recovery patterns and recovery generalization from treated to untreated language depend on the lexical and orthographic distances between the two languages. For healthy bilinguals, language processing is usually studied in comparison to monolinguals. We advocate that a good starting point for identifying patterns specific for bilingual aphasia is to compare patient studies of bilinguals and monolinguals.

Effects of Early and Late Bilingualism on Resting-State Functional Connectivity.

Of current interest is how early life experience leaves its footprint on brain structure and function. In this regard, bilingualism provides an optimal way to determine the effects of the timing of language learning because a second language can be learned from birth or later in life. We used resting-state fMRI to look at simultaneous and sequential bilinguals who differed only in age of acquisition, and found stronger connectivity between language and cognitive control regions in bilinguals who learned their two languages simultaneously, a pattern that was associated with more efficient brain activation during speech. Our findings highlight how functional connections in the brain differ depending upon when learning takes place.

Do Bilingual advantages in attentional control influence memory encoding during a divided attention task?

The current study examined if bilingual advantages in cognitive control influence memory encoding during a divided attention task. Monolinguals, simultaneous bilinguals, and sequential bilinguals switched between classifying objects and words, then were tested for their recognition memory of stimuli previously seen during the classification task. Compared to bilingual groups, monolinguals made the most errors on the classification task and simultaneous bilinguals committed the fewest errors. On the memory task, however, no differences were found between the three language groups, but significant correlations were found between the number of errors during switch trials on the classification task and recognition memory for both target and non-target stimuli. For bilinguals, their age of second language acquisition partially accounted for the association between attentional control (number of switch errors) and subsequent memory for non-target stimuli only. These results contribute to our understanding of how individual differences in language acquisition influence interactions between cognitive domains.

Age of second language acquisition in multilinguals has an impact on gray matter volume in language-associated brain areas.

Numerous structural studies have established that experience shapes and reshapes the brain throughout a lifetime. The impact of early development, however, is still a matter of debate. Further clues may come from studying multilinguals who acquired their second language at different ages. We investigated adult multilinguals who spoke three languages fluently, where the third language was learned in classroom settings, not before the age of 9 years. Multilinguals exposed to two languages simultaneously from birth (SiM) were contrasted with multinguals who acquired their first two languages successively (SuM). Whole brain voxel based morphometry revealed that, relative to SuM, SiM have significantly lower gray matter volume in several language-associated cortical areas in both hemispheres: bilaterally in medial and inferior frontal gyrus, in the right medial temporal gyrus and inferior posterior parietal gyrus, as well as in the left inferior temporal gyrus. Thus, as shown by others, successive language learning increases the volume of language-associated cortical areas. In brains exposed early on and simultaneously to more than one language, however, learning of additional languages seems to have less impact. We conclude that – at least with respect to language acquisition – early developmental influences are maintained and have an effect on experience-dependent plasticity well into adulthood.

Balanced bilingualism and early age of second language acquisition as the underlying mechanisms of a bilingual executive control advantage: why variations in bilingual experiences matter.

Recent studies revealed inconsistent evidences of a bilingual advantage in executive processing. One potential source of explanation is the multifaceted experience of the bilinguals in these studies. This study seeks to test whether bilinguals who engage in language selection more frequently would perform better in executive control tasks than those bilinguals who engage in language selection less frequently. We examined the influence of the degree of bilingualism (i.e., language proficiency, frequency of use of two languages, and age of second language acquisition) on executive functioning in bilingual young adults using a comprehensive battery of executive control tasks. Seventy-two 18- to 25-years-old English–Mandarin bilinguals performed four computerized executive function (EF) tasks (Stroop, Eriksen flanker, number–letter switching, and n-back task) that measure the EF components: inhibition, mental-set shifting, and information updating and monitoring. Results from multiple regression analyses, structural equation modeling, and bootstrapping supported the positive association between age of second language acquisition and the interference cost in the Stroop task. Most importantly, we found a significant effect of balanced bilingualism (balanced usage of and balanced proficiency in two languages) on the Stroop and number–letter task (mixing cost only), indicating that a more balanced use and a more balanced level of proficiency in two languages resulted in better executive control skills in the adult bilinguals. We did not find any significant effect of bilingualism on flanker or n-back task. These findings provided important insights to the underlying mechanisms of the bilingual cognitive advantage hypothesis, demonstrating that regular experience with extensive practice in controlling attention to their two language systems results in better performance in related EFs such as inhibiting prepotent responses and global set-shifting.