Chinese-English Bilinguals Research Articles

Two languages, two emotional minds in one brain: processing emotion-label and emotion-laden words by Chinese-English bilinguals

ABSTRACT The present study examined the neural correlates of emotion effects evoked by emotion-label and emotion-laden nouns in Chinese-English bilinguals’ two languages through the emotion categorization tasks. At the perceptual processing stage, only L2 emotion-label and emotion-laden nouns induced amplified N100 than neutral nouns. At the semantic processing stage, relative to neutral nouns, L2 negative emotion-laden nouns triggered heightened EEPN, and L1 emotion-laden nouns evoked marginally smaller EEPN; only L2 emotion-laden and positive emotion-label nouns exhibited augmented LEPN; L2 positive emotion-label and L1 emotion-label and emotion-laden nouns displayed reduced N400. At the integration processing stage, L2 positive nouns showed larger LPC and L1 positive nouns displayed smaller LPC than neutral nouns. These results verified emotion word type hypothesis across languages, and also implied that emotional attributes were encoded within both perceptual and semantic representations in L2, and predominantly within semantic representation in L1.

Improved Speech Authenticity Detection in Chinese–English Bilingual Contexts

The rapid evolution of voice technology has heightened the need for robust detection systems to distinguish between authentic and tampered speech. Recent competitions have significantly advanced the development of countermeasures against spoofing attacks. However, while advancements in detection technologies have been notable, existing methods often focus on a single type of tampering and language. Our contribution lies in developing an improved model that integrates an enhanced ResNet architecture with an LSTM to improve the detection of tampered audio, particularly in challenging multilingual scenarios. In the experiments, we built a hybrid dataset from self-recording Chinese speech and public VCTK2 English samples, enhanced the ResNet model generalization capabilities, and evaluated our approach using the bilingual dataset. Experiment results demonstrate that the proposed approach achieves a superior performance with an equal error rate of 11.62%, even in the face of bilingual conditions, and, more importantly, outperforms the leading models from ASVSpoof 2021 and ADD 2022 competitions. We also employed advanced tampering techniques, including CycleGAN voice conversion and auto splicing, to simulate real-world tampering scenarios and verify the effectiveness of the proposed approach.

Transcranial magnetic stimulation of the right inferior frontal gyrus impairs bilinguals' performance in language-switching tasks

It is widely accepted that bilinguals activate both languages simultaneously, even when intending to speak only one. A prevailing theory proposes that bilinguals inhibit the nontarget language to produce the target language, thought to be supported by evidence that the right inferior frontal gyrus (rIFG), a region typically associated with inhibition, is activated during language-switching tasks. However, it remains unclear whether the rIFG plays a causal or epiphenomenal role in this process. To explore the role of the rIFG, the present study employed transcranial magnetic stimulation (TMS) to modulate its neural activity and evaluate subsequent behavior in bilinguals. Specifically, twenty-nine Chinese-English bilinguals participated in the study and performed picture-naming tasks in single- and dual-language contexts after receiving sham stimulation (Sham), continuous theta burst stimulation (cTBS), or intermittent theta burst stimulation (iTBS) over the rIFG in three separate visits. Sham served as a control, with cTBS and iTBS intended to decrease and increase cortical excitability, respectively. We found that, compared to Sham, cTBS led to larger asymmetric switching costs and smaller asymmetric mixing costs, whereas iTBS resulted only in smaller asymmetric mixing costs. These findings suggest that cTBS targeting the rIFG likely impairs both local and global control. However, iTBS applied to the rIFG alone may not necessarily enhance language control mechanisms and could even hinder global control. Moreover, exploratory analyses found pronounced TMS-induced impairments in less balanced bilinguals, implying their potentially greater reliance on bilingual language control. Overall, this study is the first to suggest a causal role of the rIFG in language switching.

The cross-script cognate effect in spoken and written second language production: A study based on Chinese-English bilinguals.

Previous studies using cognates with the same writing system have found cognate facilitation effect in the lexical processes of spoken and typewritten productions and cognate interference effect in the sub-lexical process of typewritten production. This study focused on cross-script cognates, Chinese-English, which have different writing systems, and explored cognate effects based on the input and output modalities by using a Chinese-English translation task. Experiment 1 was under visual input modality and investigated the cross-script cognate effect in all three output modalities: spoken, typewritten and handwritten. Results revealed a cognate facilitation effect in the lexical processes across all three output modalities. However, it showed a cognate facilitation effect rather than a cognate interference effect in the sub-lexical process of typewritten production. Experiment 2 was under auditory input modality and focused on exploring cross-script cognate effect on typewritten and handwritten modalities, finding a consistent result on cognate effects with Experiment 1. Both experiments showed higher accuracy for cognates, and there was no significant difference in cgnate effect between visual and auditory inputs. In summary, these findings indicated that the use of cross-script cognates could effectively mitigate cognate interference. While spoken, handwritten and typewritten production share lexical processes, differences emerge in sub-lexical processes, with spoken production being less influenced by orthography. Furthermore, combining the results of Experiments 1 and 2, typewritten production may lean towards the phonological route while handwritten production may favour the direct lexical-orthographic route in the sub-lexical processes.

Sub-Lexical Processing of Chinese-English Bilinguals: An ERP Analysis.

Previous research has established that bilinguals automatically activate lexical items in both of their languages in a nonselectivemanner, even when processing linguistic information in the second language (L2) alone. However, whether this co-activation extends to the sub-lexical level remains debated. In this study, we investigate whether bilinguals access sub-lexical information while processing in their L2. Thirty-two Chinese-English bilinguals and thirty-one English monolinguals completed an EEG-based semantic relatedness task, during which they judged whether pairs of English words were related in meaning or not (±S). Unbeknownst to the participants, the form (±F) of the Chinese translations in half of the pairs shared a sub-lexical semantic radical. This leads to four conditions: +S+F, +S-F, -S+F, and -S-F. This design, along with the comparison to English monolinguals, allows us to examine if bilinguals' native language is activated at the sub-lexical level when they are exposed only to L2. The results revealed that both groups showed sensitivity to semantic relatedness, as evidenced by a greater N400 for semantic unrelated pairs than related pairs, with monolinguals eliciting a more pronounced difference. Bilinguals, on the other hand, exhibited a greater P200 difference compared to monolinguals, indicating greater sensitivity to the hidden Chinese radical/form manipulation. These results suggest that highly proficient bilinguals automatically engage in lexical co-activation of their native language during L2 processing. Crucially, this co-activation extends to the sub-lexical semantic radical level.

Word frequency modulates the selection of semantic access pathways of spoken words in the second language

ABSTRACT: Most second language (L2) learners comprehend words more difficult in its spoken form than the written form (Bekleyen 2009). Based on the findings of previous studies, we assumed that word frequency and language proficiency may be two critical factors in spoken word identification. To investigate how these two factors modulate L2 spoken word identification, we recruited Chinese-English bilinguals with different English proficiency levels, and manipulated words' orthographic consistency, and word frequency. Our results supported the phonological restructuring account, it suggested that only high frequency L2 spoken words can achieve phonological restructuring and rely on orthographic information to access meaning. The less frequently used word has a weak spelling-sound connection, leaving the primitive sound-meaning route the only choice. This effect may be unrelated to language proficiency, the order that orthographic and phonological information is acquired, or the language system. Altogether, these results revealed that Chinese-English bilinguals rely on both the direct route and the orthography-mediation route to process L2 spoken words. The choice of which route is modulated by word frequency. 摘要: 大多数第二语言学习者理解单词的口语形式比书面形式更困难。基于 以往的研究结果，我们认为词频和语言熟练度可能是口语词汇识别的 两个关键因素。为了研究这两个因素是如何调节第二语言口语单词识 别的，我们招募了具有不同英语熟练度的汉-英双语者为被试，并操纵 了单词的正字法一致性和词频这两个因素。我们的研究结果支持语音 重构理论，表明只有高频的二语口语词汇才能实现语音重构，并依赖 正字法信息获取意义。而低频单词的拼写与其发音之间的联系较弱， 这使得原始的音-义直接通路成为唯一的选择。这种出现的词频效应可 能与语言熟练度、正字法信息和语音信息获得的顺序或语言系统无关。 以上结果表明，汉-英双语者在加工二语口语时，既依赖于直接通路， 也依赖于正字法中介通路。且通路的选择是由词频调节的。

Immorality backward, morality forward? Metaphorical morality in Chinese-English bilinguals.

This study explored whether instructing participants to make forward or backward joystick movements in response to morality words is consistent with the conceptual metaphor MORAL IS MOVING FORWARD/IMMORAL IS MOVING BACKWARD in Chinese-English bilinguals' first and second languages. Chinese-English bilinguals were instructed to categorize words as moral or immoral while moving a joystick in a compatible block (moral-forward, immoral-backward) and an incompatible block (moral-backward, immoral-forward). The results revealed three main conclusions: First, participants showed faster categorization of immoral words when their responses involved backward joystick movements compared to forward joystick movements. Second, participants also demonstrated a slightly faster categorization of moral words when their responses involved backward joystick movements compared to forward joystick movements. Third, Chinese morality words were categorized faster overall than English morality words. However, despite a slightly larger effect size observed in L1, the action compatibility effects for morality words exhibited a similar pattern across both languages. In sum, bilinguals showed shared access to the IMMORAL IS MOVING BACKWARD conceptual metaphor across both L1 and L2, but they did not access the MORAL IS MOVING FORWARD conceptual metaphor in either L1 or L2. This study provides new evidence supporting the conceptual metaphor theory.

Bilinguals outperform trilinguals in implicit language aptitude: the mediating role of selective attention

ABSTRACT A mounting number of individuals engage in the simultaneous learning of multiple foreign languages. Prior research has underscored the advantages of bilingualism on foreign language aptitude (FLA). However, the impact of multilingual experience on the constituents of FLA, namely explicit language aptitude (ELA) and implicit language aptitude (ILA), along with the cognitive mechanisms underlying these effects, remain less explored. This study seeks to fill this gap by examining the potential multilingual influence on FLA constituents and the possible mediating role of cognitive abilities such as selective attention and working memory. Our research involved 82 Chinese college students, aged between 17 and 24, equally distributed into two cohorts: Chinese-English bilinguals and Chinese-English-Japanese trilinguals (41 per group). The results showed that bilinguals outperformed trilingual learners in terms of ILA performance, with selective attention fully mediating the relationship between multilingualism and ILA. This work is pioneering in identifying the crucial role of selective attention in linking multilingualism and ILA, thereby advancing our understanding of the cognitive underpinnings of the relative bilingual efficiency in language aptitude. The insights are invaluable for educational practice, suggesting that language learning programmes should be designed to optimise cognitive resources in multilingual learners.

The Effect of Bilingualism on Children's Creative Thinking of Cognitive Functioning: Evidence from Chinese Native Speaker

This essay investigates the impact of bilingualism, specifically learning English as a second language, on the creative thinking of Chinese-speaking children. Bilingualism's influence on cognitive functioning, particularly creative thinking, has been widely debated, with studies showing varying results. The study includes Chinese monolinguals and Chinese-English bilinguals from different age groups, with the aim of exploring potential differences in creative thinking between the two groups. To assess creative thinking, a battery of standardized creativity tests adapted to the Chinese language and culture is used, including linguistic, figural, and ideational tasks. The results are analyzed using a mixed-method approach, considering the effects of bilingualism, age-related changes, and task-specific differences. Expected outcomes may include identifying a bilingual advantage in certain aspects of creative thinking, age-related variations in creative thinking skills, and task-specific disparities. This research provides insights into the complex relationship between bilingualism, cognitive functioning, and creative thinking, particularly within the context of Chinese-speaking children. The findings have implications for educational practices, curriculum development, and language learning strategies, highlighting the importance of considering language and culture when studying the impact of bilingualism on cognitive functioning and creative thinking. This study emphasizes the significance of investigating the effects of specific language pairs on cognition and creative thinking, shedding light on the potential advantages and challenges associated with bilingualism.

Neural correlates of emotion-label vs. emotion-laden word processing in late bilinguals: evidence from an ERP study

ABSTRACT The brain processes underlying the distinction between emotion-label words (e.g. happy, sad) and emotion-laden words (e.g. successful, failed) remain inconclusive in bilingualism research. The present study aims to directly compare the processing of these two types of emotion words in both the first language (L1) and second language (L2) by recording event-related potentials (ERP) from late Chinese-English bilinguals during a lexical decision task. The results revealed that in the early word processing stages, the N170 emotion effect emerged only for L1 negative emotion-laden words and L2 negative emotion-label words. In addition, larger early posterior negativity (EPN) was elicited by emotion-laden words than emotion-label words in both L1 and L2. In the later processing stages, the N400 emotion effect was evident for L1 emotion words, excluding positive emotion-laden words, while it was absent in L2. Notably, L1 emotion words elicited enhanced N400 and attenuated late positive complex (LPC) compared to those in L2. Taken together, these findings confirmed the engagement of emotion, and highlighted the modulation of emotion word type and valence on word processing in both early and late processing stages. Different neural mechanisms between L1 and L2 in processing written emotion words were elucidated.

The different effects of a sensorimotor grounding on AoA between bilingual concepts.

Psycholinguistic studies have argued for the age of acquisition (AoA) of words as a marker of concept learning, showing that the semantic features of concepts themselves influence the age at which their labels are learned. However, empirical evidence suggests that semantic features such as imageability and linguistic phenomena such as frequency do not adequately predict AoA. The present study takes the developmental approach of embodied cognition and investigates the effects of sensorimotor experiences on the ease of acquisition of the concept acquired in bilinguals. Specifically, we investigated (1) whether the sensorimotor experience can explain AoA beyond frequency; (2) and whether these patterns are consistent across L1 Chinese and L2 English. We conducted sensorimotor rating measures in both Chinese and English on 207 items in which Chinese-English bilingual adults were requested to evaluate the extent to which they experienced concepts by employing six perceptual senses and five effectors for actions located in various regions of the body. Meanwhile, data on AoA and frequency were collected. The present study showed the sensorimotor experience was closely linked with AoAs in both languages. However, the correlation analysis revealed a trend of higher correlations between AoAs for the same concepts and L1 Chinese, relative to L2 English for the present Chinese-English bilinguals. Importantly, the hierarchical regression analysis demonstrated that after controlling for frequency, sensorimotor experience explained additional variance in L1 AoA. However, L2 sensorimotor experience did not explain the variance in L2 AoA. Sensorimotor experience explained more share of variance in L1 AoA but frequency accounted for more variance in L2 AoA. The findings suggest that concept acquisition should consider the grounding in appropriate sensorimotor experience beyond linguistic phenomena like frequency.

The word frequency effect in first- and second-language reading by Chinese and Dutch bilinguals

Abstract High-frequency words are processed faster than low-frequency words, known as the word frequency effect (FE). Although the FE has been studied in various writing systems as well as in first- (L1) and second-language (L2) reading, existing theoretical hypotheses are mainly based on findings in alphabetic languages. To date, no study has investigated theoretical explanations of the FE such as the learning hypothesis, the lexical entrenchment hypothesis and the rank hypothesis apply to Chinese–English bilinguals. The present study, therefore, compared the FEs in Chinese– and Dutch–English bilinguals during natural paragraph reading in their L1 and L2, using eye-tracking measures. Chinese bilinguals exhibited a larger FE in L2 than in L1. They displayed smaller L1 FEs and much steeper L2 FE curves than Dutch bilinguals. These findings are not entirely consistent with the existing FE hypotheses, and the present study discusses theoretical accounts in light of the observed results.

The impact of emotional states on bilingual language control in cued and voluntary switching contexts

This study investigated bilingual language control in emotional contexts. We assessed the language switching and mixing performance of two groups of Chinese-English bilinguals in picture naming under neutral, negative, and positive emotional states. One group switched languages voluntarily while another matched group switched languages according to external cues. We found that negative state impaired proactive control, whereas positive state seemed to improve proactive control. Importantly, the detrimental effects of negative state could be proportional to the cognitive demands imposed by the naming context. However, negative states disrupted proactive control in voluntary but not cued naming, where the proactive control demands were comparable. This finding suggests that the control system selectively compensates for the emotional disruption of control in a cued-naming context requiring strict control but not in a voluntary-naming context preferring less strict control. Accordingly, we tentatively proposed a theoretical account of the adaptive control mechanism in emotional contexts. These findings would extend the Adaptive Control Hypothesis to more naturalistic settings.

Neuroimaging evidence dissociates forced and free language selection during bilingual speech production

Abstract Bilinguals may choose to speak a language either at their own will or in response to an external demand, but the underlying neural mechanisms in the two contexts is poorly understood. In the present study, Chinese–English bilinguals named pairs of pictures in three conditions: during forced-switch, the naming language altered between pictures 1 and 2. During non-switch, the naming language used was the same. During free-naming, either the same or different languages were used at participants' own will. While behavioural switching costs were observed during free-naming and forced-switching, neuroimaging results showed that forced language selection (i.e., forced-switch and non-switch) is associated with left-lateralized frontal activations, which have been implicated in inhibitory control. Free language selection (i.e., free-naming), however, was associated with fronto-parietal activations, which have been implicated in self-initiated behaviours. These findings offer new insights into the neural differentiation of language control in forced and free language selection contexts.

The impact of language proficiency on neuro-cognitive mechanisms supporting second-language spoken word recognition: an ERP study on Chinese-English bilinguals

ABSTRACT The aim of the present study is to investigate the impact of proficiency in the second language (L2) on the neurocognitive processes that support the recognition of spoken words. Chinese native learners of English (N = 34) took part in the picture-word matching task and the AX Continuous Performance Test (AX-CPT). In the picture-word matching task, the component amplitudes for P50, N120, and P200 were found to be lower in the low proficiency group compared to the high proficiency group. Regarding the AX-CPT, the high-proficiency group exhibited a more balanced utilisation of proactive and reactive control, whereas the low-proficiency group displayed a greater reliance on proactive control. Additionally, a correlation was observed between various ERP components from the picture-word matching task and behavioural indicators obtained from the AX-CPT, suggesting different strategies of cognitive control may reflect the influence of language proficiency on neurocognitive mechanisms in spoken word recognition.

Language Distance Moderates the Effect of a Mixed-Language Environment on New-Word Learning for 4-Year-Old Children.

As bilingual families increase, the phenomenon of language mixing among children in mixed-language environments has gradually attracted academic attention. This study aims to explore the impact of language mixing on vocabulary acquisition in bilingual children and whether language distance moderates this impact. We recruited two groups of bilingual children, Chinese-English bilinguals and Chinese-Japanese bilinguals, to learn two first-language new words in a monolingual environment and a mixed-language environment, respectively. The results showed that the participants could successfully recognize the novel words in the code-switching sentences. However, when we compared the performance of the two groups of bilingual children, we found that the gaze time proportion of the Chinese-English bilingual children under the code-switching condition was significantly higher than that of the Chinese-Japanese bilingual children, while there was no significant difference under the monolingual condition. This suggests that language mixing has an inhibitory effect on vocabulary acquisition in bilingual children and that this inhibitory effect is influenced by language distance, that is, the greater the language distance, the stronger the inhibitory effect. This study reveals the negative impact of language mixing on vocabulary acquisition in bilingual children and also implies that there may be some other influencing factors, so more research is needed on different types of bilingual children.

Embodiment for Spatial Metaphors of Abstract Concepts Differs Across Languages in Chinese–English Bilinguals

AbstractEmbodied cognition posits that processing concepts requires sensorimotor activation. Previous research has shown that perceived power is spatially embodied along the vertical axis. However, it is unclear whether such mapping applies equally in the two languages of bilinguals. Using event‐related potentials, we compared spatial embodiment correlates in participants reporting the source of auditory words as being presented from above or below their sitting position. English bilinguals responded faster for congruent presentations of high‐power words (presented above) but not for congruent presentations of low‐power words (presented below) in both languages. Low‐power words together also failed to modulate N400 amplitude or interact with language. However, follow‐up analyses on high‐power words showed congruency effects on N400 amplitude in Chinese but not in English. Finally, English controls showed no effect. This suggests that spatial embodiment differs across languages in bilinguals, but the roles of culture and proficiency require further research.

Neural substrates of L2-L1 transfer effects on phonological awareness in young Chinese-English bilingual children

The growing trend of bilingual education between Chinese and English has contributed to a rise in the number of early bilingual children, who were exposed to L2 prior to formal language instruction of L1. The L2-L1 transfer effect in an L1-dominant environment has been well established. However, the threshold of L2 proficiency at which such transfer manifests remains unclear. This study investigated the behavioral and neural processes involved when manipulating phonemes in an auditory phonological task to uncover the transfer effect in young bilingual children. Sixty-two first graders from elementary schools in Taiwan were recruited in this study (29 Chinese monolinguals, 33 Chinese-English bilinguals). The brain activity was measured using fNIRS (functional near-infrared spectroscopy). Bilingual children showed right lateralization to process Chinese and left lateralization to process English, which supports more on the accommodation effect within the framework of the assimilation-accommodation hypothesis. Also, compared to monolinguals, bilingual children showed more bilateral frontal activation in Chinese, potentially reflecting a mixed influence from L2-L1 transfer effects and increased cognitive load of bilingual exposure. These results elucidate the developmental adjustments in the neural substrates associated with early bilingual exposure in phonological processing, offering valuable insights into the bilingual learning process.

Sensitivity to morphological spelling regularities in Chinese-English bilinguals and English monolinguals

AbstractEvidence of sensitivity to graphotactic and morphological patterns in English spelling has been extensively examined in monolinguals. Comparatively few studies have examined bilinguals’ sensitivity to spelling regularities. The present study compared late Chinese-English bilinguals and English monolinguals on their sensitivity to systematic inflectional and derivational spelling regularities. One hundred and twenty-nine undergraduate students completed a forced-choice spelling task, in which nonword pairs were presented in a sentence context requiring a choice of the relevant grammatical form. English ability measures were administered to examine possible inter-individual differences in morphological sensitivity. The results showed that both monolingual and bilingual participants demonstrated knowledge of spelling patterns, but the groups differed in their sensitivity to inflectional and derivational spelling regularities. Specifically, bilinguals showed more consistent use of morphological spelling regularities in guiding their decision on spelling choice compared to monolinguals. The results are argued to be consistent with the predictions of statistical learning accounts of spelling acquisition.

The interaction of central and peripheral processing in L2 handwritten production: Evidence from cross-linguistic variations

Abstract The current study explores the interplay between central and peripheral processes in second language (L2) handwriting among bilinguals with diverse orthographic backgrounds. Our investigation delves into the cross-linguistic transfer effect in Spanish–English and Chinese–English bilinguals, emphasizing lexical frequency and phoneme-grapheme (P-O) consistency in spelling-to-dictation and immediate copying tasks. Results reveal that the interaction between central and peripheral processes in L2 handwritten production is shaped by the bilinguals' native language (L1) orthographic characteristics. Spanish–English bilinguals exhibited sensitivity to P-O consistency and the spread of this effect from central to peripheral processes throughout both tasks. Conversely, Chinese–English bilinguals showed heightened sensitivity to lexical frequency during orthographic planning and motor execution, particularly in the immediate copying task. In a broader context, these findings suggest that the parallel and cascading coordination of the L2 writing system is modulated by cross-linguistic variations. The implications of our findings hold relevance for handwriting production and bilingualism research.