Abstract This article focuses upon the measurement of accuracy in second-language task-based spoken performance, with measures related to unit of analysis, error gravity, and accuracy linked to clause length. Building on established indices, three new measures of accuracy, all linked to clause length, are described. In addition, variations in an error gravity formula are also used. The measures, both established and new, are trialed with an existing dataset from a study exploring planning effects on second language narrative performance. A range of established measures is shown to generate appreciable effect sizes with this dataset. The newly developed measures also work well, as do alternative error gravity formulae. The new length-accuracy measures also seem sufficiently distinct from measures of language complexity. We discuss the implications of these findings for measuring accuracy in task-based spoken language performance, as well as the relevance of the new measures for theoretical accounts of second language performance.
Abstract Potential difficulty in second language (L2) compared to first language (L1) sentence processing has been ascribed to various factors, including difficulty in building syntactic structure, difficulty in retrieving information from memory during comprehension, and difficulty in making predictions about upcoming elements. In this paper, we examine pronoun resolution in so-called crossover constructions ( The girl who she helped earlier today went home ), where comprehension requires the interaction of structure building, structural prediction, and memory retrieval in real-time, as a test case of these claims. In three preregistered experiments (N = 96 in Experiments 1a/b, and N = 160 in Experiment 2), we found that L1 and L2 real-time processing and final comprehension are constrained by crossover constraints. There was also no evidence for L1/L2 differences in the processing of crossover. These results suggest similar processes of structure building, structural prediction, and memory retrieval in L1 and L2 readers during sentence comprehension.
Abstract Bilinguals tend to have slower response times in picture naming than monolinguals in both their first and second languages. Naming speed interacts with item frequency, suggesting that the bilingual disadvantage may be due to less frequent exposure to each language. We measure response speed in a Picture Naming and a Picture-Word-Interference paradigm among 98 bilinguals and 83 monolinguals, looking for interactions between word frequency and frequency of use of both L1 and L2. We confirm previous findings that monolinguals outperform bilinguals, and that the bilingual disadvantage is stronger for low- than for high-frequency items. While immersed bilinguals seem to have an advantage in L2 naming over non-immersed speakers, self-reported use of either language does not affect naming in either language, and the L1 is not affected by the immersed vs. non-immersed distinction. We conclude that frequency remains an elusive factor in bilingual development, and particularly in L1 attrition.
This study investigates whether adult learners can simultaneously acquire the sounds, words, and grammar of a novel language through cross-situational statistical learning (CSL). English-speaking participants were exposed to an artificial language with unfamiliar phonology and varying morphological salience. Results showed measurable acquisition of nouns and verbs, but limited learning of adjectives and case markers. Importantly, only participants in the high-salience condition showed sensitivity to morphosyntactic violations, suggesting that perceptual salience enhances awareness of grammatical structure. A word-picture matching task revealed that learners encoded phonolexical forms imprecisely: while clearly deviant items were rejected, minimally different lures were often accepted. Finally, individual differences in phonolexical precision were only weakly associated with phonetic discrimination ability. These findings demonstrate the power and limits of CSL in second-language learning and highlight the importance of perceptual cues for acquiring complex L2 structure.
In the field of second language (L2) research, interest in applying meta-analytic techniques has gained momentum in recent years. Considering the potentially far-reaching impact of meta-analyses, they must adhere to rigorous methodological practices and a high level of transparency regarding decisions made throughout the meta-analytic process. This study empirically assessed the methodological and reporting practices of 224 L2 meta-analyses published across 99 journals. To conduct systematic coding, a comprehensive instrument was developed, comprising 39 items that each address a key aspect of meta-analytic methodology or reporting practice. The overall findings provided an overview of current practices, identifying both strengths and areas for improvement. Based on the findings, recommendations were offered for improving methodological rigor and transparency in L2 meta-analyses. Additionally, the comprehensive coding instrument developed in this study offers a valuable resource for the systematic evaluation of methodological and reporting practices in future L2 meta-analytic research.
Abstract Ableist ideologies in schools and among clinicians have impeded equity for students with disabilities. By excluding individuals with diagnoses of learning disability (SLD) and attention deficit hyperactivity disorder (ADHD) from foreign language (FL) courses, professionals and schools discriminate against students who could benefit from participation. This essay reviews evidence falsifying the notion of an FL learning disability and contradicting the practice of FL substitutions for students with SLDs and ADHD. Evidence demonstrates that most students with SLDs and ADHD can pass FL classes. We maintain that clinicians who make these diagnoses and educators who recommend FL substitutions have no expertise in determining students’ suitability for FL learning. Their automatic assumptions regarding exclusion from rather than inclusion in FL courses are a form of systemic ableism that ignores the intent of disability law and denies agency to these students. We explore how the myth of an FL “learning disability” emerged and why the myth persists despite evidence to the contrary.
In this commentary contextualizing the complexities at the nexus of disability and applied linguistics (AL), the authors highlight the paucity of conscientious attention to disabled populations in AL research, explore the intricacies of choosing appropriate terminology to describe disability and disabled people, challenge scholars in the field to reflect on and make explicit their emic or etic positionality vis-à-vis disability in their research, and call researchers to consider researching with , rather than merely about , disabled second language learners. The authors (a) illustrate how a collection of emergent research studies illuminates critical considerations at this underresearched interdisciplinary intersection in the field, and (b) demonstrate, via example studies in other areas of AL, how scholars may choose to center the disabled second-language learning experience rather than relegate it to the far corners of the field.
The present study compares several lexical diversity (LD) measures to determine which measure, or measures, best predict receptive lexico-grammatical ability in written L2 Spanish, and whether a composite LD score is better than any single measure. We analyzed 1,225 written responses with eight different LD measures: six popular measures, a composite score based on Principal Component Analysis (PCA) of those six measures, and the traditional TTR to be used as a baseline against which to compare the other measures. Other predictor variables included the age and gender of the writers, the age of first exposure to Spanish, the number of years studying Spanish, and study abroad participation. The results of a series of mixed-effect logistic regression models suggest that the composite LD measure is best, and that among the LD measures studied, two predicted lexico-grammatical ability nearly equally well. We conclude with the recommendation that L2 language researchers use multiple LD measures, including a composite measure based on PCA, rather than any single LD measure.
Natural phonetic variability such as talker differences facilitates second language (L2) word learning. Whether accent variability enhances the talker variability benefit, particularly in the learning of words that differ only in lexical tones, has not yet been examined despite its potential applied value for L2 tone language learning. Two groups of monolingual English speakers completed six training sessions on four minimal-tone quadrads of Mandarin monosyllabic pseudowords, produced either by 12 talkers from Beijing (single accent) or by four talkers each from Beijing, Yantai, and Guangzhou (multiple accents). Bayesian mixed-effects modeling revealed strong learning improvement across sessions in both conditions, but the multiple-accent group improved faster than the single-accent group. In addition, the multiple-accent group demonstrated superior generalization to new talkers with a familiar and an unfamiliar accent, suggesting that natural L2-Mandarin accent variability facilitates English learners' access to abstract tone-word lexical representations, beyond the benefits of talker variability alone.
Lexical acquisition often occurs through reading, yet little research has compared how cognates, false cognates, and noncognates are learned contextually through reading. To this end, we conducted a week-long pretest-training-posttest study with 54 adult Polish learners of English. During three sessions on consecutive days, participants read 45 short stories (170-317 words) containing 90 target keywords (30 cognates, 30 noncognates, 30 false cognates). We examined how word type, context informativeness, and number of keywords occurrences affected keyword learning. Additionally, participants were randomly assigned to a control or awareness-raising group, the latter trained to notice cross-linguistic similarities. Mixed-effects models showed learning of all word types at immediate posttest, with cognates being learned the most and false cognates the least. Higher context informativeness and more keyword occurrences improved learning for all keywords, but false cognates benefited the most from contextual clues. However, raising awareness of cross-linguistic similarity did not enhance contextual learning.
Bilinguals tend to have slower response times in picture naming than monolinguals in both their first and second languages. Naming speed interacts with item frequency, suggesting that the bilingual disadvantage may be due to less frequent exposure to each language. We measure response speed in a Picture Naming and a Picture-Word-Interference paradigm among 98 bilinguals and 83 monolinguals, looking for interactions between word frequency and frequency of use of both L1 and L2. We confirm previous findings that monolinguals outperform bilinguals, and that the bilingual disadvantage is stronger for low- than for high-frequency items. While immersed bilinguals seem to have an advantage in L2 naming over non-immersed speakers, self-reported use of either language does not affect naming in either language, and the L1 is not affected by the immersed vs. non-immersed distinction. We conclude that frequency remains an elusive factor in bilingual development, and particularly in L1 attrition.
While the movement toward open science (OS) has gained substantial traction among quantitative inquiries, qualitative research, particularly in second language (L2) contexts, remains underrepresented. L2 qualitative research is characterized by complex, multimodal, multilayered, and contextually situated linguistic and non-linguistic data; yet existing openness debates underplay the ethical and relational dimensions essential to this inquiry. In response, this paper introduces guidelines on conducting L2 ethical and accountable research in qualitative contexts (CLEAR-Qual), the first practitioner-informed, phase-by-phase framework designed to operationalize openness for L2 qualitative work as an ethical, reflexive, and collaborative stance rather than an all-or-nothing technical fix.Developed using the Delphi method, CLEAR-Qual distinguishes openness on research (i.e., outward reporting) from openness with research (i.e., processual, participant-centered practices) and aligns OS principles with the contextual, emergent nature of qualitative second language research. The framework articulates core and advisory practices across five phases (pre-study, data collection, analysis, reporting, and post-study). Key recommendations include preregistration, tiered consent acquisition, rigorous anonymization, reflexive documentation, knowledge co-creation, secure data management, and ethical data-use agreements for secondary access. By situating accountability at the center of the research process, CLEAR-Qual provides actionable guidelines for researchers, reviewers, and editors committed to transparent, ethically robust qualitative research in L2 contexts.
This study investigated the effects of contextual diversity (CD) on second language incidental vocabulary learning. A total of 124 Japanese learners of English were allocated to a control group or 2 experimental groups, either a high contextual diversity (HCD) or a low contextual diversity (LCD) group. Participants in the HCD group encountered target words across three different texts that varied in genre and topic, while those in the LCD group read three different texts that shared the same genre and topic. Meaning recall and recognition tests were conducted at pretest, immediate posttest, and delayed posttest. Results showed that HCD outperformed LCD on meaning recognition at the delayed posttest. Moreover, learners with greater prior vocabulary knowledge tended to benefit more from contextually varied input, whereas such input may have adverse effects on learners with lower lexical proficiency. This study offers insights into the role of CD in incidental vocabulary acquisition and provides pedagogical implications for optimally incorporating input variability into L2 vocabulary instruction.
Screen-based reading has frequently been associated with lower comprehension than reading on paper, a phenomenon known as screen inferiority. Although cognitive capacity, linguistic knowledge, and digital usage vary across learners, it remains underexplored how individual-difference factors shape medium effects in second-language (L2) reading among adolescents. We investigated how reading on paper versus tablets affects L2 reading comprehension among 240 Korean eighth graders learning English and whether medium effects are moderated by working memory, L2 proficiency, and tablet experience. Participants completed comprehension tests under both conditions, along with a reading span task, a proficiency test, and a tablet-usage questionnaire. Results showed that participants performed worse on tablets than on paper; these gaps were larger among learners with higher spans and proficiency. In contrast, tablet experience did not interact with reading medium. These findings underscore the need for explicit instruction to support effective L2 reading on digital devices, even for high-performing learners.
Framed within Social Interdependence Theory, this study investigated how learner factors (interaction mindsets and task perceptions) relate to learner engagement, task completion, and lexical learning. One hundred and five L2 learners of English completed an interaction-mindsets questionnaire and a lexical pre-test, performed two interactive tasks (i.e., collaborative spatial planning task vs. asymmetric visual comparison task), completed an engagement questionnaire, and participated in a post-test and a debriefing. Learner interactions were coded for engagement (semantically engaged talk, responsiveness, LREs), while survey and interview data were analyzed using inferential statistics and thematic analysis. Our results showed that interaction mindsets predicted various dimensions of engagement (i.e., cognitive, social, and emotional) and lexical learning. Most learners viewed tasks positively despite their differing foci. Follow-up tests revealed the impact of task type on engagement, which in turn predicted task completion. The results evidence links between learner factors, engagement, and learning outcomes, which highlights the need to foster positive interaction mindsets and task perceptions to enhance engagement and learning.
This paper calls for a critical re-evaluation of research ethics in applied linguistics (AL) and second language acquisition (SLA) research, particularly concerning the ethical treatment of members of the disabled community. Historically, AL and SLA research has often perpetuated deficit views of disability by focusing on cognitive or affective differences. This paper examines the ethical implications of deficit-based research and tensions between institutional research policies and everyday ethical dilemmas through a disability justice lens. To address these gaps within the field, we propose an emancipatory, rights-based framework that fundamentally reimagines research ethics in AL and SLA by centering respect, representation and reciprocity, informed consent, privacy and confidentiality, and accessibility. Through a focus on disability rights and actionable guidelines, this framework seeks to dismantle systemic barriers in research ethics. It also highlights more equitable and inclusive research practices for disabled people and marginalized groups in AL and SLA research.
Visual impairment (VI) affects around 2.2 billion people globally (World Health Organization, 2019). VI language learners need strong vocabulary knowledge as much as sighted (SI) learners, yet little is known about how different instruction types impact their vocabulary development. In this study, 16 VI and 16 SI learners of English were taught 60 vocabulary items counterbalanced through two aural input methods: codeswitching (CS), giving first language (L1) explanations, and aural input manipulation (AIM) with CS (AIMCS), where increased volume emphasized words alongside CS explanations. Pre-, post-, and delayed post-tests indicated that AIMCS led to better short-term vocabulary retention for both groups, with no significant differences longer term. VI learners benefited more overall, and learners with lower initial vocabulary showed the greatest gains. Listening proficiency moderated the effects, with AIMCS offering greater short-term benefits for learners with higher listening proficiency. The study suggests AIMCS enhances short-term vocabulary learning, particularly for VI learners, but listening proficiency is critical.
This study investigated the beliefs about additional language learning and use and knowledge of additional languages of 226 multilingual adults with Attention-deficit/hyperactivity disorder (ADHD) with Polish L1. The data were collected via an online questionnaire with Likert-type statements. Data were analyzed using mixed models (GLMMs). The findings show that a) individuals with ADHD hold a neutral view of their additional language learning and use experiences; b) the hyperactivity/impulsivity ADHD presentation may positively affect additional language learning; and c) Autism spectrum disorder (ASD) or dyslexia has no impact on additional language knowledge in the context of ADHD. The discussion points to the importance of attention in additional language acquisition and the possible compensatory role of ADHD and ASD in the context of dyslexia and language learning.
