A second language can be learned inside and outside the classroom. In this study we investigated the English and French vocabulary knowledge of 110 Dutch-speaking children (age 10–12), who received 100 hours of instruction in French, whereas their contact with English came from out-of-school exposure only. We examined the role of individual differences (out-of-school exposure and gender) and word-related variables (cognateness, frequency, and language). The children completed a receptive vocabulary test in English and French and filled in a questionnaire. The results showed that the children had a larger vocabulary knowledge in English than in French, illustrating the power of contextual language learning. Word learning was influenced by the amount of exposure, word frequency, and cognateness. Additionally, English words were easier to learn than French words for the participants we tested. Our results point to the need for out-of-school exposure to supplement language learning in the classroom.

The relationship between working memory (WM) and second-language (L2) reading has been extensively examined, with mixed results. Our meta-analysis models the potential impact of underresearched variables considered to moderate this relationship. Results from 74 studies (228 correlations) showed a significant, small relationship between WM and L2 reading (r = .300). Of the eight moderators examined, the WM–L2 reading relationship differed between studies using first-language (L1) and L2 WM tasks and between studies reporting and not reporting WM task reliability. Methodological features of reading comprehension measures or learners’ proficiency did not moderate the relationship. These results suggest that measurement practices of WM—rather than L2 reading measures or learner characteristics—matter in understanding the WM–L2 reading relationship. Implications and future directions are discussed.

This study investigated the relationship between the level of cognitive-linguistic difficulty of task input and the size of the cross-linguistic relationship for academic listening comprehension in emergent bilinguals. It was theoretically motivated by task-dependent cross-linguistic interaction frameworks. We hypothesized that task item sets that involve a higher level of cognitive-linguistic difficulty, drawing on a number of sources of item difficulty, would show a smaller strength of interaction than sets involving a lower level. Using a task-based assessment instrument, listening comprehension was measured in 75 Turkish–Dutch bilingual children at first-grade entry (Mage = 6;7). Partial L1-L2 correlations indicated that cognitively more demanding item sets tended to coincide with smaller L1-L2 correlations. This finding was, in part, consistent for cognitive difficulty, yet inconclusive for linguistic difficulty. An explanation is discussed that, in line with information-processing theory, highlights a trade-off between cognitive-linguistic task demands and cross-linguistic influence.

Academic lectures are potential sources of vocabulary learning for second language learners studying at universities where English is the medium of instruction, as well as those in English for Academic Purposes (EAP) programs. Topic-related vocabulary is likely to occur frequently in academic texts, and academic speech consists of a reasonable proportion of frequently occurring sequences of words. Yet no intervention studies have explored the potential for learning single words and collocations through viewing a video of an unmodified academic lecture. To address this gap, this study collected data from 55 EAP learners in China, following a pretest-posttest design. The experimental group (n = 28) watched a video of an academic lecture in which 50 target single words and 19 target collocations were presented while the control group (n = 27) received no treatment. Results show that viewing the lecture led to significant learning gains of single words at the meaning recall level and collocations at the form recognition level. Frequency of occurrence in the lecture appeared to significantly contribute to the learning of single words but not the learning of collocations. Prior knowledge of general vocabulary appeared to make no significant contribution to the learning of single words and collocations.

The present study uses event-related potentials (ERPs) to examine nonlocal agreement processing between native (L1) English speakers and Chinese–English second language (L2) learners, whose L1 lacks number agreement. We manipulated number marking with determiners (the vs. that/these) to see how determiner-specification influences both native and nonnative processing downstream for verbal number agreement. Behavioral and ERP results suggest both groups detected nonlocal agreement violations, indexed by a P600 effect. Moreover, the manipulation of determiner-number specification revealed a facilitation effect across the board in both grammaticality judgment and ERP responses for both groups: increased judgment accuracy and a larger P600 effect amplitude for sentences containing violations with demonstratives rather than bare determiners. Contrary to some claims regarding the potential for nonnative processing, the present data suggest that L1 and L2 speakers show similar ERP responses when processing agreement, even when the L1 lacks the relevant distinction.

This study is a comparative examination of reading behavior of first-language (L1) Canadian and second-language (L2) Finnish and German readers of English. We measured eye-movement patterns during reading the same set of English sentences and administered tests of English vocabulary, spelling, and exposure to print. The core of our study is a novel method of statistical prediction used to generate hypothetical Finnish and German participants with maximum observed L1 scores in all component skills. We found that with L1-like component skills, hypothetical German readers can show the same reading speed as the L1 group. We hypothesize this advantage comes from the small linguistic distance to English. Conversely, hypothetical Finnish readers remain disadvantaged even with maximum component skills, likely due to a larger linguistic distance. We discuss theoretical and applied implications of our method for L2 acquisition research.

Effects of phonetically variable input (PVI) for processing instruction (PI) training and the number of training items were tested with a picture-selection eye-tracking task. Intermediate second language (L2) learners of French (n = 174) were tested before and after they received either a short (24 items), medium (48), or long (96) training on the causative structure with either single- or multivoice input. PI improved picture-selection accuracy from about 10% to above 50% regardless of the training size. Eye-tracking data showed a reduction in looks to the incorrect picture only after the short and medium training: it surfaced regardless of voice variability after the short training, whereas multivoice training led to a greater reduction after the medium training. Long training did not yield a reliable reduction of incorrect looks regardless of voice variability. Taken together, PVI does not hinder L2 syntactic learning. Learners may benefit more from a relatively shorter training with PVI.

In comparative studies focusing on context of learning, the main contexts under investigation have been study abroad (SA), at-home formal instruction (AH), and domestic immersion (IM). With the global status of English and its burgeoning popularity as a medium of instruction in countries where English only holds the status of a lingua franca, a new SA context has emerged. This study compares the L2 learning of English in this new English as a lingua franca study abroad (ELFSA) context to Anglophone SA and AH in terms of oral and written complexity, accuracy, and fluency gains. Participants’ perceptions of contextual differences concerning the amount of language contact, use, development, and their views toward English are also explored qualitatively. Apart from indicating equal development on most CAF measures after a semester, the qualitative findings highlight ELFSA as providing a low-anxiety atmosphere that helps sojourners gain ownership of English. Thus, ELFSA emerges as an appealing study abroad context for future sojourners.

This study investigated the constructs underlying second language (L2) word association (WA) with regard to three dimensions of lexical competence—size, organization, and accessibility—and the lexical performance of speech. One-hundred and thirteen Japanese learners of English completed a computer-delivered oral WA task along with three vocabulary tasks: a form-recall gap-filling task (size), a primed lexical decision task (organization and accessibility), and an oral cartoon narrative (lexical richness). Regression analyses explored how well these lexical competence and performance scores predicted two WA outcome variables: response profiles and response times. Form-recall vocabulary knowledge, (collocational) priming, and lexical richness explained a large amount of variance in WA response type profiles (Nagelkerke’s pseudo R2 = .901). Form-recall vocabulary knowledge and lexical decision time explained 28.5% of the variance of WA response times. A three-stage model of L2 WA task performance is proposed to account for the constructs underlying WA performance.

Statistical learning (SL) approaches to reading maintain that proficient reading requires assimilation of rich statistical regularities in the writing system. Reading skills in developing first-language readers are predicted by individual differences in sensitivity to regularities in mappings from orthography to phonology (O-P) and semantics (O-S), where good readers rely more on O-P consistency, and less on O-S associations. However, how these regularities are leveraged by second-language (L2) learners remains an open question. We utilize an individual-differences approach, measuring L2 English learners’ sensitivity to O-P, O-S, and frequency during word-naming, across two years of immersion. We show that reliance on O-P is leveraged by better readers, while reliance on O-S is slower to develop, characterizing less proficient readers. All factors explain substantial individual variance in L2 reading skills. These findings show how SL plays a key role in L2 reading development through its role in assimilating sublexical regularities between print and speech.

A bilingual’s language system is highly interactive. When hearing a second language (L2), bilinguals access native-language (L1) words that share sounds across languages. In the present study, we examine whether input modality and L2 proficiency moderate the extent to which bilinguals activate L1 phonotactic constraints (i.e., rules for combining speech sounds) during L2 processing. Eye movements of English monolinguals and Spanish–English bilinguals were tracked as they searched for a target English word in a visual display. On critical trials, displays included a target that conflicted with the Spanish vowel-onset rule (e.g., spa), as well as a competitor containing the potentially activated “e” onset (e.g., egg). The rule violation was processed either in the visual modality (Experiment 1) or audio-visually (Experiment 2). In both experiments, bilinguals with lower L2 proficiency made more eye movements to competitors than fillers. Findings suggest that bilinguals who have lower L2 proficiency access L1 phonotactic constraints during L2 visual word processing with and without auditory input of the constraint-conflicting structure (e.g., spa). We conclude that the interactivity between a bilingual’s two languages is not limited to words that share form across languages, but also extends to sublexical, rule-based structures.

The acquisition of a second language (L2) may be challenging in adulthood, as the phonological system of the native language (L1) can sometimes limit the perception of phonological contrasts in L2. The present study aimed to (a) examine the influence of an L1 (Hebrew) that lacks a phonemic contrast for vowel length on the ability to discriminate between short and long vowels in L2 (Arabic); and (b) assess the effect of a short training on the participants’ discrimination performance. A total of 60 participants, 20 native Arabic speakers and 40 native Hebrew speakers, were tested using the ABX procedure in two sessions that were 10 days apart. A single training session was provided for half of the Hebrew speakers (n = 20) approximately 2–3 days after the first (pretraining) testing session. The results indicated that the trained Hebrew participants’ discrimination levels (measured by accuracy and reaction times) were above chance level but were nevertheless lower in comparison to the Arabic speakers. However, a short training session was sufficient to yield a nativelike performance that generalized to untrained nonwords. These findings support the theoretical models that predict a reserved ability to acquire new phonetic/phonological cues in L2 and have important practical implications for the process of learning a new phonological system in adulthood.

Both language input and output are important to child language learners’ heritage language development. Nevertheless, existing studies mainly focus on language input, leaving the significance of language output underexplored. The current study assessed 201 kindergarteners’ Mandarin skills (i.e., receptive vocabulary, receptive grammar, and verbal fluency) in Singapore, and investigated the influence of children’s Mandarin experience, and specifically output, on these Mandarin skills. The results based on multilevel models reveal that children’s Mandarin experience plays a crucial role in the three Mandarin skills, after controlling for children’s gender, language aptitude, and English proficiency. Specifically, children’s onset age of Mandarin speaking and the number of places where they used Mandarin alone significantly predict all the Mandarin skills.

This study takes a mixed-methods approach to explore the influence of emotion-laden (positive vs. negative vs. neutral) texts and words on vocabulary learning for Spanish heritage and foreign language learners. Participants (N = 121) were tasked with learning emotion-laden pseudowords embedded in three emotion-laden texts centered around themes of bilingualism, immigration, and identity. Form recognition, translation, and multiple-choice tests were designed to measure vocabulary recall and retention. Results from a mixed-effects modeling analysis showed that the neutral and negative emotion-laden texts predicted better vocabulary learning outcomes than the positive text for both HLLs and FLLs and that neutral words were learned best by all learners. Qualitative findings from open-ended questionnaires suggest emotional arousal as another influential affective factor in vocabulary learning for learners of diverse sociolinguistic backgrounds. Directions for future emotions research in SLA and pedagogical implications of socially relevant, emotion-laden material for vocabulary learning are discussed.

This study brings together two previously largely independent fields of multilingual language acquisition: heritage language and third language (L3) acquisition. We investigate the production of fortis and lenis stops in semi-naturalistic speech in the three languages of 20 heritage speakers (HSs) of Italian with German as a majority language and English as L3. The study aims to identify the extent to which the HSs produce distinct values across all three languages, or whether crosslinguistic influence (CLI) occurs. To this end, we compare the HSs’ voice onset time (VOT) values with those of L2 English speakers from Italy and Germany. The language triad exhibits overlapping and distinct VOT realizations, making VOT a potentially vulnerable category. Results indicate CLI from German into Italian, although a systemic difference is maintained. When speaking English, the HSs show an advantage over the Italian L2 control group, with less prevoicing and longer fortis stops, indicating a specific bilingual advantage.

There is currently much interest in the role of prediction in language processing, both in L1 and L2. For language acquisition researchers, this has prompted debate on the role that predictive processing may play in both L1 and L2 language learning, if any. In this conceptual review, we explore the role of prediction and prediction error as a potential learning aid. We examine different proposed prediction mechanisms and the empirical evidence for them, alongside the factors constraining prediction for both L1 and L2 speakers. We then review the evidence on the role of prediction in learning languages. We report computational modeling that underpins a number of proposals on the role of prediction in L1 and L2 learning, then lay out the empirical evidence supporting the predictions made by modeling, from research into priming and adaptation. Finally, we point out the limitations of these mechanisms in both L1 and L2 speakers.

This study examined an integrated process model of second language motivation based on the framework of self-determination theory (SDT). Specifically, this research investigated the extent to which satisfying basic psychological needs (BPN) are related to SDT orientations and, in turn, to the effort expended and how these factors relate collectively to vocabulary knowledge. Revised scales assessing students’ BPN (the Basic Psychological Needs of Second Language Scale) and SDT orientations (the Self-Determination Theory of Second Language Scale) were considered and tested using a higher-order confirmatory factor analysis solution. The results of the structural model showed that BPN were only directly related to vocabulary knowledge, which indicated their direct importance for the attainment of the vocabulary. No other indirect effects through SDT orientations or effort were identified. Nonetheless, SDT orientations were both directly and indirectly linked to vocabulary knowledge over and above the role of expended effort. The results elucidated motivational pathways that yielded pedagogical implications for language learning.

This study examines a 30-item Spanish elicited imitation task (EIT) as a measure of global language proficiency for heritage language (HL) learners of Spanish. Results from Rasch modeling suggest that, while EIT scores demonstrated excellent reliability, the ability of much of the HL sample far exceeded the difficulty of the items. Differential item functioning analysis revealed that several items functioned differently for the present study’s HL sample than for the second language learners from a prior study. Additionally, although EIT scores were strongly correlated with another proficiency measure for the present HL sample (e.g., the Diploma de español como lengua extranjera or DELE), common-person equating suggested that the EIT and the DELE may measure different latent variables. Overall, the results provide evidence of the EIT’s utility as a proficiency assessment tool for research on HL learners, however, with limitations and the need for additional analyses discussed.

Motivated by a series of interconnected studies on simultaneous attention to form and meaning, we revisit L2 learners’ real-time processing of text by using eye-tracking as an unobtrusive method to provide concurrent data on attention allocation. Seventy-five L2 Spanish learners were instructed to attend to an assigned form in a reading passage and to press a button when they noticed it. After reading the passage, the learners answered 10 multiple-choice comprehension questions. The participants’ responses to the comprehension questions and their reading behaviors reflected in eye-movement data suggest that attention to grammatical form may hinder L2 learners’ simultaneous attention to form and meaning. However, individual differences in global text processing contributed to the differences in the participants’ text-comprehension scores over and above the task instruction to attend to form: Slower L2 readers who read the passage more carefully showed better text comprehension.

One feature of Spanish that presents some difficulties to second language (L2) learners whose first language (L1) is English concerns lexical stress. This study explores one aspect of the obstacle these learners face, weak phonological processing routines concerning stress inherited from their native language. Participants were L1 English L2 learners of Spanish. The experiment was a sequence-recall task with auditory stimuli minimally contrasting in stress (target) or segmental composition (baseline). The results suggest that learners are more likely to accurately recall sequences with stimuli contrasting in segmental composition than stress, suggesting reduced phonological processing of stress relative to a processing baseline. Furthermore, an increase in proficiency—assessed by means of grammatical and lexical tests—was found to be modestly associated with an increase in the accuracy of processing stress. We conclude that the processing routines of native English speakers lead to an acquisitional obstacle when learning Spanish as a L2.