The measurement of second language (L2) productive lexical proficiency has driven a great deal of research over the past two decades. Research has indicated that more proficient speakers and writers tend to use a wider range of words and that more proficient writers tend to use words that are more sophisticated (less frequent in reference…

An important part of the grammatical proficiency of students learning Turkish as a foreign language is the use of verb complements in terms of case suffixes used with verbs. The suffixes that determine the relations between nouns and verbs that make up the two main word categories of Turkish are case suffixes. Noun case suffixes, whose main…

Over the last 25 years, scholars have proposed several recommendations for including spoken grammar in second language classrooms. However, recent studies point to potential challenges in this endeavour: learners may feel inauthentic when using what they see as 'native-speaker' forms, and interlocutors may see these forms as less acceptable when…

An extensive number of corrective feedback (CF) studies have examined learners' errors with grammar, vocabulary, pronunciation, and spelling (non-formulaic forms) and established an association between learners' uptake of CF and their second language development. However, learners' errors with formulaic sequences (FSs) comprising idioms,…

University education must respond to social demands and adapt to the needs of students in the teaching-learning process. This article reports on a study that focuses on how a teaching proposal based on the flipped classroom has an impact on grammar learning and on the development of oral skills at tertiary education. The main objectives of this…

This study compared the effects of task repetition only (TR), task repetition with grammatizing (TR+GR), and grammatization with no task repetition (GR) on 94 EFL learners' oral task performances. Participants' productions were measured both in terms of complexity, accuracy, and fluency as well as receptive knowledge (measured by an error…

Oral language comprehension (OLC) and vocabulary depth are widely recognized as key predictors of reading comprehension. However, research has either provided a limited representation of OLC or failed to acknowledge the distinctive predictive nature of vocabulary depth. This study investigates the combined contributions of OLC, conceptualized as a…

Developing L2 learners' productive mastery of vocabulary is a challenging task. Recent research has called for greater attention to understanding how receptive vocabulary may be transformed for productive use (Schmitt, 2019). Using a design-based research methodology, this study investigated adult ESL learners' productive oral vocabulary…

This aptitude-treatment interaction study investigated the extent to which explicit and implicit cognitive abilities are differentially related to learning outcomes under two corrective feedback conditions. One hundred and thirteen intermediate English learners of Spanish were randomly assigned to an implicit feedback (recast), explicit feedback…

We report on a conceptual replication of Révész (2012) in order to investigate the idea whether learners provided with recasts do engage in different kinds of behavioral engagement as a function of their working memory and if/how this engagement comes to bear on performance on different measures. Engagement with recasts was measured through a…

Possessive determiners (PDs) "his" and "her" are challenging for L2 learners to acquire, and this difficulty has been attributed to several factors, including negative L1 transfer effects (White et al., 2007). What researchers have not yet considered is how PDs are acquired by learners whose L1 predicts positive transfer…

We investigated the acquisition of Hindi split ergativity (zero or "-ne" marking) and Hindi differential object marking (DOM; zero or "-ko" marking) by L1 speakers of Dutch. Both grammatical phenomena are conditioned by multiple syntactic and semantic features. On a descriptive level, the study aims to examine when and how…

Languages differ in their realization of the subject argument: non-null-subject languages, like English, require subjects to be phonologically overt; rather, null-subject languages, like Greek, allow the subject to be overt or null. This cross-linguistic difference can lead to the transfer of grammatical properties across languages during…

Feature-based approaches to acquisition principally focus on second language (L2) learners' ability to perceive non-native consonants when the features required are either contrastively present or entirely absent from the first language (L1) grammar. As features may function contrastively or allophonically in the consonant and/or vowel systems of…

Purpose: This study investigated the effects of an AR application (Civilisations AR) on EFL learners' oral proficiency in the dimensions of content, fluency, vocabulary, pronunciation, and grammar, as well as their attitudes and perceptions toward AR technology. Design: Utilizing a quasi-experiment, twenty-four EFL learners engaged in a…