Bilingualism and Phonological Awareness: Re-examining Theories of Cross-Language Transfer and Structural Sensitivity

Non-adjacent dependency learning from variable input: investigating the effects of bilingualism, phonological memory, and cognitive control

Introduction

One proposed advantage of bilingualism concerns the ability to extract regularities based on frequency information (statistical learning). Specifically, it has been proposed that bilinguals have an advantage in statistical learning that particularly holds in situations of variable input. Empirical evidence on this matter is scarce. An additional question is whether a potential bilingual advantage in statistical learning can be attributed to enhancements in phonological memory and cognitive control. Previous findings on effects of bilingualism on phonological memory and cognitive control are not consistent.

Method

In the present study, we compared statistical learning from consistent and variable input in monolingual and bilingual children (Study 1) and adults (Study 2). We also explored whether phonological memory and cognitive control might account for any potential group differences found.

Results

The findings suggest that there might be some advantage of bilinguals in statistical learning, but that this advantage is not robust: It largely surfaced only in t-tests against chance for the groups separately, did not surface in the same way for children and adults, and was modulated by experiment order. Furthermore, our results provide no evidence that any enhancement in bilinguals' statistical learning was related to improved phonological memory and cognitive control: bilinguals did not outperform monolinguals on these cognitive measures and performance on these measures did not consistently relate to statistical learning outcomes.

Discussion

Taken together, these findings suggest that any potential effects of bilingualism on statistical learning probably do not involve enhanced cognitive abilities associated with bilingualism.

Executive function skills account for a bilingual advantage in English novel word learning among low-income preschoolers

The current study compared economically disadvantaged bilingual and monolingual preschoolers' performance on an English novel word learning task and examined whether children's executive function (EF) skills account for differences in novel word learning performance across groups. In total, 39 English monolinguals and 35 Spanish-English bilingual preschoolers from low-income homes completed a battery of EF measures and the Quick Interactive Language Screener to gauge English novel word learning ability. Within a poverty context, bilingual preschoolers performed significantly better on measures of English novel word learning as compared with their monolingual peers. This bilingual advantage in novel word learning ability was mediated by short-term memory, but not inhibition or attention shifting, which indicates that gains in short-term memory may facilitate word learning in English for bilingual preschoolers from economically disadvantaged backgrounds. These findings have important practical implications for interventions designed to promote English vocabulary growth for low-income bilingual children.

Language-specific phonological skills and the relationship with reading accuracy in Sylheti-English sequential bilinguals

This study investigated the influence of first language (L1) phonology on second language (L2) early reading skills in Sylheti-English bilinguals (N = 58; 48% girls; British Bangladeshi) and their monolingual-English peers (N = 43; 45% girls; 96% White British, 4% multiethnic British) in a diaspora context. Language-specific phonological awareness and nonword repetition were tested at two time points (6;2-7;8 years-old). At Time 1, the bilinguals had lower productive accuracy for phonological sequences that violated their L1 phonology (d = .56; .84), and these skills accounted for a significant amount of variance in their reading accuracy. At Time 2, the language-specific effects were no longer present. These findings highlight the importance of considering language structure in multilingual early literacy development.

Complexity and cross-linguistic transfer in intervention for Spanish–English bilingual children with speech sound disorder

With bilingual children, intervention for speech sound disorders must consider both of the child’s phonological systems, which are known to interact with each other in development. Further, cross-linguistic generalization following intervention for bilingual children with speech sound disorders (i.e. the impact of treatment in one language on the other) has been documented to varying degrees in some prior studies. However, none to date have documented the cross-linguistic impact of treatment with complex targets (e.g. consonant clusters) for bilingual children. Because complex phonological targets have been shown to induce system-wide generalization within a single language, the potential for bilingual children to generalize learning across languages could impact the efficiency of intervention in this population. This pilot intervention study examines the system-wide, cross-linguistic effects of treatment targeting consonant clusters in Spanish for two Spanish–English bilingual children with phonological disorder. Treatment was provided with 40-minute sessions in Spanish via teletherapy, three times per week for six weeks. Comprehensive phonological probes were administered in English and Spanish prior to intervention and across multiple baselines. Pre-intervention data were compared to data from probes administered during and after intervention to generate qualitative and quantitative measures of treatment outcomes and cross-linguistic generalization. Results indicate a medium effect size for system-wide generalization in Spanish (the language of treatment) and English (not targeted in treatment), for both participants (mean effect size in Spanish: 3.6; English 4.3). These findings have implications for across-language transfer and system-wide generalization in treatment for bilingual children. 

Effects of orthographic transparency on rhyme judgement

This study investigated the influence of multiliteracy in opaque orthographies on phonological awareness. Using a visual rhyme judgement task in English, we assessed phonological processing in three multilingual and multiliterate populations who were distinguished by the transparency of the orthographies they can read in (N = 135; ages 18-40). The first group consisted of 45 multilinguals literate in English and a transparent Latin orthography like Malay; the second group consisted of 45 multilinguals literate in English and transparent orthographies like Malay and Arabic; and the third group consisted of 45 multilinguals literate in English, transparent orthographies, and Mandarin Chinese, an opaque orthography. Results showed that all groups had poorer performance in the two opaque conditions: rhyming pairs with different orthographic endings and non-rhyming pairs with similar orthographic endings, with the latter posing the greatest difficulty. Subjects whose languages consisted of half or more opaque orthographies performed significantly better than subjects who knew more transparent orthographies than opaque orthographies. The findings are consistent with past studies that used the visual rhyme judgement paradigm and suggest that literacy experience acquired over time relating to orthographic transparency may influence performance on phonological awareness tasks.

Cross-linguistic influence of phonological awareness and phonological recoding skills in Chinese reading acquisition among early adolescent students

This study investigated crosslinguistic phonological awareness and phonological recoding skills in Chinese reading acquisition among early Chinese adolescent students. 76 Chinese children participated in this study and finished a series of reading measurements over 1 year (from Grade 5 to Grade 6). In Grade 5, they were assessed by Chinese phonological awareness (syllable, onset, rhyme, phoneme, and tone awareness), English phonological awareness (syllable, onset, and rime, phoneme awareness) as well as English and Chinese phonological recoding skills. In Grade 6, the students completed the measurement of Chinese lexical inferencing ability. Subsequent hierarchical regression analyses showed that Time 1 (Grade 5) Chinese phonological awareness and recoding skills made a joint intra-lingual contribution to later Chinese lexical inferencing ability. Moreover, English phonological recoding skills had a unique inter-lingual contribution to later Chinese lexical inferencing ability after age, nonverbal intelligence, and English phonological awareness were controlled for. Results expanded the self-teaching hypothesis to account for variations within and across languages over time and underscored the uniqueness of inter-lingual phonological recoding in later orthographic and semantic learning.

Language profiles of Welsh-English bilingual children with Down syndrome

PURPOSE

Given that children with Down syndrome (DS) have language learning difficulties, concerns have been raised about the capacity of these children to acquire two (or more) languages. This research examines the language profiles of bilingual children with DS and typically developing (TD) children in comparison to monolinguals, with a view towards identifying the factors associated with language abilities within these populations.

METHOD

Four groups of children were recruited: Welsh-English bilinguals with DS (n=10), English monolinguals with DS (n=10), TD Welsh-English bilinguals (n=10) and TD English monolinguals (n=10). Children were individually matched on nonverbal cognitive ability (NVCA) to each child in the bilingual DS group and the four groups were matched on socioeconomic status and gender. Bilinguals were matched on current and lifetime exposure to Welsh and age of first exposure to their L2. Within DS and TD groups, chronological age was statistically controlled for. Language abilities were assessed via standardised assessments and specially designed tasks. Bilinguals were assessed in both of their languages.

RESULTS

Results show no effect of language status on measures of expressive and receptive language abilities or phonological awareness. Language impairments were evident for both DS groups, particularly for expressive morphosyntax. Welsh receptive vocabulary scores of the bilinguals with DS were comparable to the TD bilinguals. Working memory, phonological awareness and chronological age were the strongest predictors of receptive language outcomes in both DS groups, explaining 90% of the variability.

CONCLUSIONS

In conclusion, we report no adverse outcomes on language development for bilinguals with DS. To our knowledge, this is the first group study of bilingualism in children with DS within the UK. Findings align with and add to the growing body of literature that reports that bilingualism does not negatively impact the language development of children with developmental disabilities. Clinical and educational implications are discussed.

Within and Across Language Predictors of Word Learning Processes in Dual Language Learners

This study investigated the relation between Dual Language Learners' (N = 90) vocabulary and grammar comprehension and word learning processes in preschool (aged 3-through-5 years). Of interest was whether: (a) performance in Spanish correlated with performance in English within each domain; and (b) comprehension predicted novel word learning within and across languages. Dual-language experience was evaluated as a potential moderator. Hierarchical linear modeling revealed stronger predictive associations within each language than across languages. Across languages, results varied by experience and domain. Structural sensitivity theory suggests exposure to two languages heightens awareness of parameters along which languages vary and provides a framework for interpreting complex associations within and across languages. Knowledge from one language may influence learning in both.

The Importance of Morphological Awareness in Bilingual Language and Literacy Skills: Clinical Implications for Speech-Language Pathologists

Purpose This clinical focus article will highlight the importance and role of morphological awareness (MA) across orthographies, in particular, the role it plays in reading development, specifically with bilingual populations. MA supports reading acquisition and development beyond other predictors of reading, such as phonological awareness, orthographic knowledge, and rapid automatic naming to name a few. While MA aids in the development of decoding fluency, vocabulary development, and reading comprehension, explicit morphological instruction does not occur regularly in reading intervention. For English learners (ELs), instruction should focus on improving MA, semantic awareness, and orthographic processing, which in turn would exert a positive influence on reading accuracy, fluency, and comprehension. This clinical focus article aims to provide speech-language pathologists with applicable tasks to measure MA and strategies to guide explicit morphological instruction. Method The role of MA in reading development will be described with regard to its importance beyond other predictors and the role it plays in theoretical models of reading development. Then, MA will be described across orthographies, with a focus on cross-linguistic influences. Finally, measurement tasks will be described, and clinical implications will be discussed in terms of using different strategies and tools to explicitly address MA. Conclusion Clinical implications of morphological instruction should be further explored and incorporated in current practices. With regard to ELs, it is important that we provide effective and specific instruction to better bridge the academic achievement gaps and increase overall language and literacy skills. Morphological instruction should be explicit and provided in conjunction with other domains of language. Equally important is leveraging families of ELs to promote their children's oral language and literacy in their first language.

Language dominance predicts cognate effects and metalinguistic awareness in preschool bilinguals

The current work investigates whether language dominance predicts transfer of skills across cognitive-linguistic levels from the native language (Spanish) to the second language (English) in bilingual preschoolers. Sensitivity to cognates (elephant/elefante in English/Spanish) and metalinguistic awareness (MLA) have both been shown to transfer from the dominant to the nondominant language. Examining these types of transfer together using a continuous measure of language dominance may allow us to better understand the effect of the home language in children learning a majority language in preschool. Forty-six preschool-aged, Spanish-English bilinguals completed English receptive vocabulary and metalinguistic tasks indexing cognate effects and MLA. Language dominance was found to predict crosslinguistic (cognate) facilitation from Spanish to English. In addition, MLA skills also transferred from Spanish to English for children with lower English proficiency, and no transfer of MLA was evident for children with higher English proficiency. Altogether, findings suggest that transfer from a dominant first language to a nondominant second language happens at linguistic and cognitive-linguistic levels in preschoolers, although possibly influenced by second language proficiency. The current study has implications for supporting the home language for holistic cognitive-linguistic development.

Phonological Awareness Trajectories: Young Spanish-English and Cantonese-English Bilinguals

This study focused on the phonological awareness skills of 72 Spanish-English and 86 Cantonese-English bilinguals, all enrolled in bilingual and mainstream classrooms in the same schools. Bilinguals were assessed on phonological awareness, decoding, vocabulary, and knowledge of book reading each year from kindergarten until second grade. Individual growth modeling analysis revealed no difference in growth trajectories of English phonological awareness between (a) Spanish-English and Cantonese-English bilinguals and (b) children enrolled in bilingual and mainstream programs. Within-language decoding, vocabulary, and knowledge of book reading were associated with the estimated average initial levels of phonological awareness skills, while only knowledge of book reading had significant effects on the estimated growth trajectory of phonological awareness skills. These findings suggest that young bilinguals with different home languages may have similar growth trajectories in English phonological awareness skills during early elementary school years. The findings have implications for early educational practices.

The moderating effect of Korean preschoolers' receptive and expressive language skills on the link between Korean PA and English PA

The purpose of the current study was to examine whether oral language skills moderate the effect of Korean phonological awareness (PA) on English PA for Korean preschoolers in the initial stage of learning English as a second language. The study participants comprised 81 five- to six-year-old Korean preschoolers attending Korean-medium preschools in South Korea. The findings demonstrated that Korean PA was significantly associated with English PA. In addition, Korean receptive and expressive language skills had moderating effects on the relationship between Korean PA and English PA, respectively. This study is discussed not only in terms of cross-language PA transfer in processing two phonologically and orthographically different languages but also in light of the importance of native language skills interacting with native PA in the second-language PA development of preschool children in the initial stage of learning a second language.

Simultaneous acquisition of English and Chinese impacts children's reliance on vocabulary, morphological and phonological awareness for reading in English

The developmental process of reading acquisition is frequently conceptualized as a self-organizing mental network consisting of lexico-semantic, phonological and orthographical components. The developmental nature of this network varies across languages and is known to impact second language learners of typologically different languages. Yet, it remains largely unknown whether such cross-linguistic differences interact within young bilingual learners of two typologically different languages. In the present study, we compared Chinese-English bilinguals and English monolinguals (ages 6-12, N=134) born and raised in the US on their English language and reading skills including vocabulary, phonological and morphological awareness, and word reading. We conducted whole group and subgroup analyses on younger participants to examine the extent of the effect. In monolinguals, phonological abilities directly predicted English word reading. In contrast, in bilinguals, both phonological and morphological abilities made an indirect contribution to English literacy via vocabulary knowledge, even though bilinguals had monolingual-like language and reading abilities in English. These findings offer new insights into the flexibility of the phonological and lexical pathways for learning to read.