We present a review of second language researchers' use of cluster analysis, an advanced statistical method still uncommon but increasingly used to identify groups or patterns in a dataset and to examine group differences. After describing key methodological considerations in conducting cluster analysis, we present a methodological synthesis of 65…

Despite its critical role for the development of the field, little is known about replication in second language (L2) research. To better understand replication practice, we first provide a narrative review of challenges related to replication, drawing on recent developments in psychology. This discussion frames and motivates a systematic review,…

Research synthesis and meta-analysis provide a pathway to bring together findings in a given domain with greater systematicity, objectivity, and transparency than traditional reviews. The same techniques and corresponding benefits can be and have been applied to examine methodological practices in second language (L2) research (e.g., Plonsky,…

Idealization plays a fundamental role in scientific inquiry. This article examines the case for maintaining the claim that the second language acquisition (SLA) of grammatical structures such as negation manifests identifiable stages of acquisition. It proposes that, while research has demonstrated the need for de-idealization, there is no need to…

This study applied systematic meta-analytic procedures to summarize findings from experimental and quasi-experimental investigations into the effectiveness of using the tools and techniques of corpus linguistics for second language learning or use, here referred to as data-driven learning (DDL). Analysis of 64 separate studies representing 88…

In bilinguals and second language learners, the native (L1) and nonnative (L2) languages coexist and interact. The L1 influences L2 production via forward transfer, as is seen with foreign accents. However, language transfer is bidirectional: even brief experience with an L2 can affect L1 production, via backward transfer. Here, we review the…

This study employed synthetic and meta-analytic techniques to review the literature on the Cognition Hypothesis, which predicts that increasing task complexity influences the quality of second language production. Based on 8 inclusion criteria, 17 published studies were synthesized according to key features. A subset of these studies (k = 9) was…

Specifies language acquisition processes in terms of brain mechanisms to explain the variable success achieved by early and late learners and proposes a brain-based model for language acquisition on the basis of the literature. Two conditions for full acquisition of a language are motivation and grammatical ability. The neural underpinnings for…

Reviews the history of applied linguistics together with the history of the journal "Language Learning," indicating the journal's particular place in that larger history and honoring its 50th anniversary. (Author/JL)

Reviews research that has been emerging from the availability of corpora on the grammar of spoken English. Presents arguments for the view that spoken and written language utilize the same basic grammatical repertoire, however different their implementations of it are. (Author/VWL)

Examines perspectives from which foreign language anxiety research has been conducted, the instruments that have been used, and the results that have been reported. Three approaches to the study of anxiety are identified as trait, state, and situation specific perspectives. (68 references) (VWL)

Summarizes a range of theoretical approaches to language acquisition. Argues that language representations emerge from interactions at all levels from brain to society. Connectionism, which provides a set of computational tools for exploring the conditions under which emergent properties arise, is discussed, and simulations of emergence of…

An examination of second-language acquisition research assumptions argues that second language data are important to understanding the nature of language. Exploration of theoretical underpinnings and empirical evidence relating to language universals indicates that research must consider how disparate facts of language are conceptually related…

Discusses the most significant findings of recent research and scholarship on the nature of the brain and its relevance to the teaching and learning of human languages. Topics covered include: (1) whether the brain is highly integrated or componential; (2) differences between conscious and unconscious processes; (3) hemispheric specialization; (4)…

Reexamines the construct of field independence/dependence and its measurement in second-language acquisition research, focusing on its role in language testing and good language-learner theories. (68 references) (Author/CB)