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.

This study is a conceptual replication of Rogers and Cheung’s (2018) investigation into distribution of practice effects on the learning of L2 vocabulary in child EFL classrooms in Hong Kong. Following a pretest, treatment, delayed posttest design, 66 primary school students (Cantonese L1) studied 20 vocabulary items over three training episodes under spaced-short (1-day interval) or spaced-long (8-day interval) learning conditions. The spacing of the vocabulary items was manipulated within-participants, and learning was assessed using crossword puzzles following a 4-week delay. While Rogers and Cheung (2018) resulted in minimal overall learning with a slight advantage for the spaced-short group, this study found large learning gains across the experimental conditions with no significant differences between the two learning schedules. Taken together, these results provide evidence that the results from previous research examining input spacing with adult populations in laboratory contexts might not generalize to authentic child learning contexts.

Meta-analytic reviews collect available empirical studies on a specified domain and calculate the average effect of a factor. Educators as well as researchers exploring a new domain of inquiry may rely on the conclusions from meta-analytic reviews rather than reading multiple primary studies. This article calls for caution in this regard because the outcome of a meta-analysis is determined by how effect sizes are calculated, how factors are defined, and how studies are selected for inclusion. Three recently published meta-analyses are reexamined to illustrate these issues. The first illustrates the risk of conflating effect sizes from studies with different design features; the second illustrates problems with delineating the variable of interest, with implications for cause-effect relations; and the third illustrates the challenge of determining the eligibility of candidate studies. Replication attempts yield outcomes that differ from the three original meta-analyses, suggesting also that conclusions drawn from meta-analyses need to be interpreted cautiously.

With Russian as the target language, a proof of concept study was undertaken to determine whether it is possible to identify linguistic features, control over which is implicated in progress on the Interagency Linguistic Roundtable (ILR) proficiency scale, thereby better to inform the instructional process. Following its development in an instrumentation study, a revised version of a computer-delivered battery of 33 perception and production tasks was administered to 68 participants—57 learners between levels 2 and 3 (21 at ILR 2, 18 at 2+, and 18 at 3) on the ILR scale, and 11 native speaker controls—whose proficiency was tested via an ILR oral proficiency telephone interview. The tasks sampled subjects’ control of Russian phonology, morphology, syntax, lexis, and collocations. Relationships between control of the linguistic features and the ILR levels of interest were assessed statistically. All 33 tasks, 18 of which assessed learners’ abilities in perception and 15 of which assessed their abilities in production, were found to differentiate ILR proficiency levels 2 and 3, and a subset was found to also distinguish levels 2 and 2+, and 2+ and 3. On the basis of the results, a checklist of linguistic features pegged to proficiency levels was produced that can be useful for syllabus designers, teachers, and learners themselves as well as providing the basis for future diagnostic tests.

Nick Ellis's article is impressive for its breadth of scholarship and the cogent case made for frequency as an important factor in second language acquisition (SLA). This response begins with a brief historical sketch, which aims to contextualize the frequency factor in terms of the evolution of SLA research. Although researchers have known about a frequency effect for some time, until recently, we have lacked neurologically plausible models and technologically convenient means of measuring and testing frequency effects in input. Still, as relevant and important as a frequency factor is, it requires greater definition and qualification. For instance, L2 learners are agents of their own learning process. They do not merely record frequency; they categorize frequently occurring patterns, abstract, and generalize from them. Higher level generalizations emerge from interactions, impose top-down expectancies on future data, and, in turn, are altered by the data in a perpetually dynamic interplay. In a similar fashion, it is incumbent on SLA researchers not to be satisfied with a frequency explanation, but to interpret it—in short, to make sense of frequency.

One of the basic goals of second language (L2) speech research is to understand the perception-production link, or the relationship between L2 speech perception and L2 speech production. Although many studies have examined the link, they have done so with strikingly different conceptual foci and methods. Even studies that appear to use similar perception and production tasks often present nontrivial differences in task characteristics and implementation. This conceptual and methodological variation makes meaningful synthesis of perception-production findings difficult, and it also complicates the process of developing new perception-production models that specifically address how the link changes throughout L2 learning. In this study, we scrutinize theoretical and methodological issues in perception-production research and offer recommendations for advancing theory and practice in this domain. We focus on L2 sound learning because most work in the area has focused on segmental contrasts.

Grammatical agreement phenomena such as verbal number have long been of fundamental interest in the study of second language (L2) acquisition. Previous research from the perspective of sentence processing has documented nativelike behavior among nonnative participants but has also relied almost exclusively on grammar violation paradigms. The present investigation examined the online comprehension of subject-verb number agreement by native and nonnative speakers of Mexican Spanish using the more subtle agreement attraction paradigm, with stimuli grammatical in both conditions, in addition to a nonlocal grammaticality paradigm. The results of a self-paced reading experiment confirmed that nonnatives can acquire nativelike online sensitivity to verbal number agreement, even without grammar errors, and that such sensitivity develops only at very high levels of L2 proficiency.

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.

Recently researchers have suggested that syntactic priming may facilitate the production of wh-questions with obligatory auxiliary verbs, particularly when learners are prompted to produce those questions with a wide variety of lexical items (McDonough & Kim, 2009; McDonough & Mackey, 2008). However, learners’ ability to benefit from syntactic priming materials with prompt-type frequency may be mediated by their ability to recognize patterns in aural input. The purpose of this replication study is to confirm the positive impact of prompt-type frequency on learners’ production of wh-questions reported by McDonough and Kim (2009), and to investigate whether its impact is mediated by learners’ auditory pattern-discrimination abilities. Thai learners (n = 43) of English as a foreign language (EFL) carried out three oral tests, two sets of syntactic priming activities, and an auditory pattern-discrimination test over a 4-week period. Half of the learners carried out the syntactic priming activities with low-type-frequency prompts, whereas the other learners received high-type-frequency prompts. The results revealed a significant interaction between Type Frequency × Auditory Pattern Discrimination on the immediate and delayed posttests. The findings are discussed in terms of the potential role of individual cognitive factors in mediating the relationship between syntactic priming and second language (L2) development.

This article reports the findings of a study in which transfer of verb properties was investigated via syntactic data elicited from second language (L2) learners. It was hypothesized that a learner's first language (L1) would influence the acquisition of verbs in those L2 semantic classes where so-called L1-L2 translation equivalents could be found. To investigate lexical transfer, the performance of Hindi-Urdu speakers on tests of English causatives was compared with that of Vietnamese speakers, because there are significant differences between causativization patterns in Hindi-Urdu and Vietnamese. To account for proficiency-based variation in performance, learners were placed in one of three levels of lexical proficiency in English, and Mann-Whitney comparisons were made between Hindi-Urdu and Vietnamese speakers at corresponding proficiency levels. It was found that the performance of the Hindi-Urdu and Vietnamese groups differed significantly in several semantic contexts. Generally, the results suggest that there is some transfer of semantic information from the L1 verb lexicon to the emerging L2 verb lexicon. More specifically, the findings suggest that verb properties are transferred selectively and that transfer plays a role in the difficulty or ease involved in the shedding of overgeneralized lexical rules.

A number of longitudinal studies of L2 production have reported frequency effects wherein learners' produce more frequent words as a function of time. The current study investigated the spoken output of English L2 learners over a four-month period of time using both native and non-native English speaker frequency norms for both word types and word tokens. The study also controlled for individual differences such as first language distance, English proficiency, gender, and age. Results demonstrated that lower level L2 learners produced more infrequent tokens at the beginning of the study and that high intermediate learners, when compared to advanced learners, produced more infrequent tokens at the beginning of the study and more frequent tokens toward the end of the study. Main effects were also reported for proficiency level, age, and language distance. These results provide further evidence that L2 production may not follow expected frequency trends (i.e., that more infrequent tokens are produced as a function of time).

In traditional classifications of languages by inflectional subsystems, both creole languages and the results of untutored SLA (interlanguages) are classified as isolating. We focus on remnants of verbal inflectional morphology in French-related creoles and ask: (a) Can the properties of verbal morphology be attributed to SLA, and (b) what does this imply for creole genesis? We show how acquisition of inflectional morphology occurs in learner varieties of French from a basic variety perspective. We discuss reflexes of French inflectional morphology that survived the creolization process, resulting in a long–short opposition of verb forms: Across creoles, different grammatical properties are marked by this opposition. Finally, we consider the implications for creole genesis theories and propose a three-generational scenario of creolization with multiple agents.

Flege, Bohn, and Jang (1997) and Escudero and Boersma (2004) analyzed first language-Spanish second language-English listeners' perception of English /i/–/i/ continua that varied in spectral and duration properties. They compared individuals and groups on the basis of spectral reliance and duration reliance measures. These reliance measures indicate the change in identification rates from one extreme of the stimulus space to the other; they make use of only a portion of the data collected and suffer from a ceiling effect. The current paper presents a reanalysis of Escudero and Boersma's data using first-order logistic regression modeling. All of the available data contribute to the calculation of logistic regression coefficients, and they do not suffer from the same ceiling effect as the reliance measures. It is argued that—as a metric of cue weighting—logistic regression coefficients offer methodological and substantive advantages over the reliance measures.My thanks to Paola Escudero and Paul Boersma for making their data available, and thanks to Terrance M. Nearey for comments on an earlier draft of this paper (any defects are my own responsibility). This work was supported by the Social Sciences and Humanities Research Council of Canada.

Recent literature has sought to understand the presence of epenthetic vowels after the productions of postvocalic word-final consonants by second language (L2) learners whose first languages (L1s) restrict the presence of obstruents in coda position. Previous models include those in which epenthesis is seen as a strategy to mitigate the effects of coda licensing restrictions in the L1; others see epenthesis as a result of misperception of consonant releases in the L2 as indicating the presence of an additional syllable nucleus. The current study examines segmental identification and syllable counting in inexperienced Korean learners of English as a foreign language. Across stimuli, two effects were found. Increased perceptual epenthesis correlated with increased identification of a segment as voiceless, indicating a joint perception of voicelessness and an epenthetic vowel. Also, rate of epenthesis increased with accuracy of detecting sibilants and coronal segments, sounds characterized by salient consonant noise. Taken together, these results indicate a perceptual mechanism that evaluates segmental content and prosodic structure from an integrated percept. Analyses across individual listeners do not support a model in which perceptual epenthesis is a strategy to increase segmental accuracy; rather, they support models in which both syllable counting and segmental identification are skills that are reflections of increased proficiency in the L2. These results are discussed with respect to models of L2 phonology that rely on the robust encoding of lexical items.

Based on writing produced by second language learners at different proficiency levels (CEFR A1 to C1), we adopted a usage-based approach (Ellis, Römer, & O’Donnell, 2016; Tyler & Ortega, 2018) to investigate how German and Spanish learner knowledge of 19 English verb-argument constructions (VACs; e.g., “V with n,” illustrated by he always agrees with her) develops. We extracted VACs from subsets of the Education First-Cambridge Open Language Database, altogether comprising more than 68,000 texts and 6 million words. For each VAC, L1 learner group, and proficiency level, we determined type and token frequencies, as well as the most dominant verb-VAC associations. To study effects of proficiency and L1 on VAC production, we carried out correlation analyses to compare verb-VAC associations of learners at different levels and different L1 backgrounds. We also correlated each learner dataset with comparable data from a large reference corpus of native English usage. Results indicate that with increasing proficiency, learners expand their VAC repertoire and productivity, and verb-VAC associations move closer to native usage.

A growing field of research has made use of a semiartificial language paradigm to investigate the role of awareness in L2 acquisition. A central and empirically still unresolved issue in this field concerns the possibility of learning implicitly, that is, without intention to learn and without awareness of what has been learned. Up until now, studies on implicit learning have mainly been conducted in laboratory settings under highly controlled conditions with university students as participants. The present study investigated whether and to what extent the results obtained in such settings can be extrapolated to the general population. Building on Williams (2005), we designed two crowdsourcing experiments that examined the learning of novel form-meaning mappings under incidental conditions in 163 participants. Our design allowed us to disentangle the effects of awareness at the level of noticing and understanding. The results of the two experiments demonstrated the implicit learning effect outside the lab in a more varied sample of participants and indicated that awareness at both levels appears to have a facilitative effect on learning outcomes.

This study addresses the question of whether observed differences in the use of the strategy of monitoring (as defined by Krashen) is related to four rather stable cognitive styles. Subjects were 40 Spanish-speaking adults in a university ESL program. Each subject's use of monitoring was assessed by comparing the degree of correctness s/he demonstrated with respect to one morpheme, third-person-singular s, in elicited speech, taken to represent his/her acquired knowledge of the morpheme, and on three writing tasks—fill-in-the-blank, proofreading, and composition—taken to represent acquired knowledge modified by conscious application of the third-person-singular rule. It was hypothesized that the most monitoring would occur on the fill-in-the-blank test, and the least on the composition. The cognitive styles hypothesized to be related to monitor use were field independence, reflection, flexible control, and preference for processing information by written word.

No significant differences in the amount of monitoring on the three written tasks were noted. Field independence was positively related to the amount of monitoring on all written tasks, and reflection weakly but positively related to the amount of monitoring on the proofreading task. Implications for further research are discussed.

This article seeks to illuminate the degree of position-based variation observed in the acquisition of new segments in a second language and to explain such variability as the consequence of phonetic constraints; this approach contrasts with much previous research that has used typological markedness to the same end. Specifically, it is proposed that learners will have the least difficulty acquiring sounds that involve novel combinations of voicing and manner in positions that favor the phonetic implementation of these sounds. Moreover, on the assumption that not all parameters can be mastered simultaneously, it is predicted that learners will first acquire aspects of a segment's articulation that are perceptually salient and articulatorily easier. The data come from a study of the acquisition of French by 20 intermediate- and advanced-proficiency English-speaking learners of French. Acoustic analysis of the data reveals asymmetries that favor accuracy with manner in onsets versus more targetlike realization of voicing in codas, in which devoicing exists in the input. Beyond demonstrating the role of phonetic principles in determining position-based variation, the findings contribute to our understanding of the acquisition of new consonantal contrasts by providing empirical evidence from a non-Germanic language to bear on this line of inquiry.

A foundation of second language motivational theory has been that motivation contributes to explaining variance in language learning proficiency; however, empirical findings have been mixed. This article presents an innovative approach to exploring L2 proficiency and motivations of teenage English language learners in Madrid, Spain (N = 1773). Participants completed a multiskill English language test, plus an eight-scale questionnaire operationalizing constructs from Dörnyei’s L2 Motivational Self System (Dörnyei, 2005). Data were analysed using Latent Variable Mixture Modeling, a person-centered profiling approach. Results indicated five distinct classes of students, characterized by differing motivation-proficiency profiles. The importance of this study is that the analysis does not assume a homogenous relationship between motivational traits and proficiency levels across the learner sample; whilst there is undoubtedly a connection between the two areas, it is not a straightforward correlation, explaining to some extent discrepancies in previous findings and laying groundwork for further, more nuanced, investigation.

Input variability is key in many aspects of linguistic learning, yet variability increases input complexity, which may cause difficulty in some learning contexts. The current work investigates this trade-off by comparing speaker variability effects on L2 vocabulary learning in different age groups. Existing literature suggests that speaker variability benefits L2 vocabulary learning in adults, but this may not be the case for younger learners. In this study native English-speaking adults, 7- to 8-year-olds, and 10- to 11-year-olds learned six novel Lithuanian words from a single speaker, and six from eight speakers. In line with previous research, adults showed better production of the multispeaker items at test. No such benefit was found for either group of children, either in production or comprehension. Children also had greater difficulties in processing multiple-speaker cues during training. We conclude that age-related capacity limitations may constrain the ability to utilize speaker variability when learning words in a new language.