This Special Issue (SI) is dedicated to early bilinguals, who acquire two languages during early childhood, before age 6, simultaneously (2L1 bilinguals) or sequentially (cL2 bilinguals). Recently, the notion of heritage speakers (HSs) − bilinguals who grow up speaking a minority language at home − has become prominent in this context. HS research has typically targeted bilinguals at a mature (adult) state, but early developing bilinguals may of course be HSs too, though not uniformly labelled as such. HSs of a moribund language or variety are another type of early bilingual, representing the final or penultimate, often 4th or 5th, generation of speakers. Unfortunately, ‘deficiency’ or ‘incompleteness’ is a common thread linking much HS research − despite a wealth of evidence demonstrating HSs’ maintenance of complexity in many grammatical domains along with differences to monolinguals (see, e.g., Kupisch & Rothman, 2016; Putnam & Sánchez, 2013). This SI brings together studies on how and why the morphosyntax and phonology of early bilinguals might differ from that of monolinguals.

This study investigates the acquisition of grammatical gender in French by German L1 children (age of onset of acquisition (AO) 2;8-4,0). The analysis of spontaneous production data of 24 children gathered longitudinally and a gender assignment test administered to 8 of these children at ages 6;7-8;3 and to 9 children (AO 2,11-3;8) at ages 3;2-5;1 revealed that some of them resembled L1 learners whereas others behaved like adult L2 learners. The turning point is at around AO 3;6. AO is thus a crucial factor determining successive language acquisition.

This study investigates the effects of Age of Onset of Acquisition (AOA) and the quality and quantity of input on the longitudinal development of gender in the acquisition of French by simultaneous (2L1) and successive bilinguals (cL2). Three aspects of French gender are studied: the abstract GENDER feature, gender assignment and gender concord. The findings show that amount and quality of input correlate significantly with the rate of development of gender assignment. Group-level analyses on gender concord show that there is no significant difference between the L1 and the 2L1 groups and that error patterns are different in the 2L1 and cL2 groups. We conclude that while it is clear from the data that the development of gender assignment is primarily dependent on input conditions the question is more open with respect to gender concord. For concord a combination of AOA, the L1 acquisitional timetable, and input are important factors.

This study investigates the acquisition of grammatical gender in both languages of 21 simultaneous Greek–Dutch bilingual children living in the Netherlands. Greek and Dutch stand on the two opposite sides in terms of frequency and transparency of gender cues. Consequently, monolingual acquisition of gender in Greek is precocious with few overgeneralizations of the default value, neuter, in early stages. In contrast, monolingual acquisition of gender in Dutch is very late with errors in neuter nouns persisting up to the age of 7. Simultaneous Greek–Dutch bilingual children present an interesting test case of crosslinguistic influence in the form of acceleration (Greek affecting Dutch) or delay (Dutch affecting Greek). Children were tested on gender marking on determiners and adjectives in production and grammaticality judgment tasks. Input measures of Greek and Dutch and lexical skills were also considered. Results point to crosslinguistic influence in the form of acceleration of gender discovery in Dutch.

This study examines the acquisition of /r/ in German and Spanish monolingual and bilingual children. German and Spanish are characterized by different /r/s. German has a uvular approximant whereas Spanish has an alveolar tap and trill. Words containing /r/ were extracted from longitudinal recordings of the children, aged 1;9 to 3;6. Results indicate that monolingual German children acquired uvular /r/ earlier than monolingual Spanish children acquired the tap and trill. The bilingual children acquired uvular /r/ similarly to the monolingual children or, in the case of /r/ clusters, they were mildly delayed. They were advanced in the acquisition of alveolar tap and they produced more /r/-like errors for the trill. Transfer patterns were observed in one child but they could not be explained by markedness or language dominance. Findings are consistent with cross-linguistic interaction in the acquisition of /r/, in which the phonological systems of the bilinguals approximate each other.

The present study analyzes percentages of target-like production of Spanish spirantization and assimilation of coda nasals place of articulation, in three groups of bilingual children simultaneously acquiring German and Spanish: two very young groups, one living in Germany and another one in Spain, and a group of 7-year-old bilinguals from Germany. There were monolingual Spanish and monolingual German control groups. The comparison between groups shows that the Spanish of bilinguals is different from that of monolinguals; and the Spanish of bilinguals in Germany is different from that of bilinguals in Spain. Results lead to the conclusion that the Spanish competence of the bilinguals from Germany is still incomplete, and influenced by transfer of the majority language (German). Only bilingual children living in Germany show influence of the majority language onto the heritage language, whereas transfer does not operate on the Spanish competence of the bilingual children from Spain.

This study investigates possessives and modified definite DPs in a corpus of heritage Norwegian spoken in the US. Both constructions involve variation in Norwegian – two word orders for possessives (pre- and postnominal) and two exponents of definiteness (a prenominal determiner and a suffix) – while English only has one of these options. The findings show that a large majority of the heritage speakers overuse the structures that are maximally different from English structures, i.e., postnominal possessors and single suffixal definiteness marking. We argue that their production pattern is the result of cross-linguistic overcorrection (CLO). In addition, a small group of the heritage speakers show signs of cross-linguistic influence (CLI) and overuse the English-like structures in both constructions. These speakers also have a slightly lower proficiency in the heritage language. Our findings are discussed in terms of previous research on monolingual and Norwegian–English bilingual children.

We investigated cognitive and metalinguistic correlates of Chinese word reading in children with L2 Chinese learning experience and compared these to those in L1 Chinese speaking children. In total, 102 third and fourth grade children were recruited for the study. We examined a range of Chinese and English word reading related cognitive and metalinguistic skills. Compared to the native Chinese speaking group (NCSS), the non-native Chinese speaking group (NNCS) only performed better in English vocabulary knowledge and English working memory. On Chinese word reading related skills the NNCS group performed significantly worse than the NCS group. Hierarchical regression analyses revealed that the unique correlates of Chinese word reading for both groups were Chinese vocabulary, working memory, lexical tone awareness, and orthographic skills. For the NNCS group only, visual skills were also unique correlates of word reading skills. The results suggest cognitive similarities and differences in reading among native and non-native Chinese speakers.

The current study examined automatic activation and semantic influences from the non-target language of different-script bilinguals during visual word processing. Thirty-four Arabic–Hebrew bilinguals and 34 native Hebrew controls performed a semantic relatedness task on visually presented Hebrew word pairs. In one type of critical trials, cognate primes between Arabic and Hebrew preceded related Hebrew target words. In a second type, false-cognate primes preceded Hebrew targets related to the Arabic meaning (but not the Hebrew meaning) of the false-cognate. Although Hebrew orthography is a fully reliable cue of language membership, facilitation on cognate trials and interference on false-cognate trials were observed for Arabic–Hebrew bilinguals. The activation of the non-target language was sufficient to influence participants’ semantic decisions in the target language, demonstrating simultaneous activation of both languages even for different-script bilinguals in a single language context. To discuss the findings we refine existing models of bilingual processing to accommodate different-script bilinguals.

This study investigates how second language (L2) listeners match an unexpected accented form to their stored form of a word. The phonetic-to-lexical mapping for L2 as compared to L1 regional varieties was examined with early and late Italian-L2 speakers who were all L1-Australian English speakers. AXB discrimination and lexical decision tasks were conducted in both languages, using unfamiliar regional accents that minimize (near-merge) consonant contrasts maintained in their own L1-L2 accents. Results reveal that in the L2, early bilinguals’ recognition of accented variants depended on their discrimination capacity. Late bilinguals, for whom the accented variants were not represented in their L2 lexicon, instead mapped standard and accented exemplars to the same lexical representations (i.e., dual mapping: Samuel & Larraza, 2015). By comparison, both groups showed the same broad accommodation to L1 accented variants. Results suggest qualitatively different yet similarly effective phonetic-to-lexical mapping strategies both for L2 versus L1 regional accents.

Despite an increase in bilingualism and the use of English as a medium of instruction, little research has been done on bilingual memory for learnt information. In a previous study, we found an L2 recall cost but equal recognition performance in L2 versus L1 when students studied short expository texts (Vander Beken & Brysbaert, 2017). In this paper, we investigate whether there is a recognition cost after a longer delay, which would indicate that the memory trace is weaker in L2. Results showed equal performance in L1 and L2, suggesting that the recall cost is either located at the production level, or that the levels-of-processing effect is mediated by language, with unaffected surface encoding leading to effective marginal knowledge on the one hand, and hampered deep encoding leading to ineffective (uncued) recall. This paper also contains the Dutch vocabulary test we used for native speakers.

We assessed language switch and mixing costs in a language-general semantic categorization task and examined how these costs relate to general inhibition and set shifting capacities. The participants were 51 native Finnish subjects with English as L2. The results showed significant symmetric language switch costs and, unexpectedly, a mixing advantage in L2: reaction times were faster in the mixed language block than in the single language block. The interactions with the general executive functions showed no consistent overall pattern. We argue that the L2 mixing advantage stems from statistical facilitation in line with a horse race model, or from opportunistic planning as suggested by the Adaptive Control hypothesis. We argue that the results overall indicate that lexical access in language reception is non-selective.

The present study investigated the impact of translation equivalents (TE) on lexical processing in a sample of 36 French–English bilingual toddlers at 22-months of age. Children were administered the Computerized Comprehension Task (CCT; Friend & Keplinger, 2003) in each language and parents completed the MacArthur Bates Communicative Development Inventory (CDI) in both English and French across two visits (one language per visit). Correct trials on the CCT were identified and classified into one of two categories: words with a known TE as reported on the CDI and words without a known TE on the CDI. Reaction times for correct trials were averaged and compared for each of the bilinguals’ languages. Interestingly, children were faster to retrieve words with a known TE on the CDI than words with no known TE. The present findings suggest that the translation facilitation effects reported in adult bilinguals are also present in very young bilinguals.

Recent theories propose that language-switching in bilinguals influences executive control. We investigated whether switching behaviour, shaped by the bilingual's interactional context as well as personal preferences impacted attentional control. We compared four groups – (i) Edinburgh monolinguals, (ii) Edinburgh non-switching late bilinguals, (iii) Edinburgh non-switching early bilinguals, and (iv) Singapore switching early bilinguals – on two tasks of attentional control. Effects of interactional context were observed, with Singapore bilinguals performing better on conflict resolution in the Attention Network Task and Edinburgh late bilinguals on attentional switching in the Elevator reversal (Test of Everyday Attention) subtest. Our results suggest that the interactional context of bilinguals could impact attentional control differently.

In this article a reference was published incorrectly. The correct reference is as follows:-

Deanda, S., Hendrickson, K., Zesiger, P., Poulin-Dubois, D., & Friend, M. (2017). Lexical access in the second year: a study of monolingual and bilingual vocabulary development. Bilingualism: Language and Cognition, 21(2), 314–327.